Jun. 2025, 日本認知心理学会, 優秀論文賞(奨励賞)　　　　　　　　　　　　　　　
頷きと首振りが選択判断に及ぼす誘導効果 https://doi.org/10.5265/jcogpsy.21.67
大杉尚之;河原純一郎

Jun. 2024, 日本認知心理学会, 日本認知心理学会優秀発表賞(社会的貢献度評価部門)　　　　　　　　　　　　　　　
宮崎由樹,若杉慶,鎌谷美希,松長芳織,須田朋和,河原純一郎

Nov. 2020, 日本基礎心理学会, 2019年度 日本基礎心理学会優秀論文賞　　　　　　　　　　　　　　　
Kenji Yamauchi, Ken Kihara, Jun I. Kawahara： Predicting sustained performance over a short time
Kenji Yamauchi, Ken Kihara, Jun I. Kawahara

May 2019, 日本認知心理学会, 日本認知心理学会優秀発表賞 新規性部門　　　　　　　　　　　　　　　
自己同一化された二次元キャラクターに対する視線シフト
今井史;佐藤智穂;互恵子;河原純一郎

Sep. 2018, 日本心理学会, 学術大会優秀発表賞　　　　　　　　　　　　　　　
課題非関連な価値ある実物の単純存在効果
伊藤 資浩;山内 健司;河原 純一郎

2018, 北海道心理学会, 北海道心理学会奨励賞　　　　　　　　　　　　　　　
顔の魅力に及ぼすサムネイル効果
伊藤資浩;山内健司;宮崎由樹;河原純一郎

Sep. 2017, 日本心理学会, .　　　　　　　　　　　　　　　
The Sanitary-Mask Effect on Perceived Facial Attractiveness
宮崎由樹;河原純一郎

2016, 日本心理学会, 学術大会優秀発表賞　　　　　　　　　　　　　　　
低アルコール摂取事態での潜在的気分測定
伊藤資浩;河原純一郎

2015, 日本認知心理学会, 優秀発表賞(発表力評価部門)　　　　　　　　　　　　　　　
永井聖剛;山田陽平;河原純一郎

2015, 日本認知心理学会, 優秀発表賞(総合性評価部門)　　　　　　　　　　　　　　　
佐藤史織;河原純一郎

2015, 日本心理学会, 日本心理学会特別優秀発表賞　　　　　　　　　　　　　　　
顔の魅力に及ぼす衛生マスクの効果
宮崎由樹;河原純一郎

2014, 日本心理学会, 日本心理学会特別優秀発表賞　　　　　　　　　　　　　　　
お辞儀は顔の主観的魅力を飛躍的に向上させる
大杉尚之;河原純一郎, Japan society

2014, 日本基礎心理学会, 日本基礎心理学会優秀論文賞　　　　　　　　　　　　　　　
河原純一郎;佐藤稔久;永井聖剛;熊田 孝恒;相馬優樹;根本英明;西崎友規子

2014, 第3回印東太郎賞　　　　　　　　　　　　　　　
河原純一郎, Publisher

2009, 日本心理学会, 国際賞奨励賞　　　　　　　　　　　　　　　
河原純一郎

2007, 日本基礎心理学会, 優秀論文賞　　　　　　　　　　　　　　　
河原純一郎

2007, 日本認知心理学会第4回大会優秀発表賞 (総合性評価部門)　　　　　　　　　　　　　　　
河原純一郎

2004, 日本心理学会, 優秀論文賞　　　　　　　　　　　　　　　
河原純一郎

2001, 日本基礎心理学会優秀発表賞　　　　　　　　　　　　　　　
河原純一郎

1997, 日本心理学会, 研究奨励賞　　　　　　　　　　　　　　　
河原純一郎

Effects of publicly available non-invasive brain stimulation on attentional functions in healthy adults: A systematic review and meta-analysis
Toru Takahashi, Ikko Kimura, Shirin Vafaei, Mitsuaki Takemi, Jun Kawahara, Takufumi Yanagisawa
23 Oct. 2025

Cultural Difference in the Effect of Bowing on Perceptions of Attractiveness
Takayuki Osugi, Jun I. Kawahara
Japanese Psychological Research, 12 Feb. 2025
Scientific journal

Interference from semantically distracting sounds in action scene search
Tomoki Maezawa, Miho Kiyosawa, Jun I. Kawahara
Attention, Perception, & Psychophysics, 06 Feb. 2025
Scientific journal

Replicating Camera Perspective Bias in the Japanese Justice System
Tomoyuki Tanda, Makiko Naka, Jun‐Ichiro Kawahara
Japanese Psychological Research, Wiley, 06 Aug. 2024, [Peer-reviewed], [Last author]
Scientific journal, Abstract

The camera perspective of recorded video interrogations has been shown to influence judgments concerning confession voluntariness; this is a phenomenon known as camera perspective bias (CPB), originally reported by Lassiter and Irvine (1986). When comparing perspectives where the suspect is visible (suspect‐focused), the detective is visible (detective‐focused), and both are visible (equal‐focused), the perceived voluntariness of a confession was greatest under the suspect‐focused condition and lowest under the detective‐focused condition. However, research conducted under the Japanese recording style by Nakata et al. (2018), using a dual‐presentation format, yielded inconsistent results, possibly because of insufficient statistical power. To address this issue, our study investigated the occurrence of CPB under the Japanese recording style with sufficient power. In Experiment 1, we aimed to replicate Nakata et al.'s (2018) study using the same mock interrogation materials. In Experiment 2, we aimed to replicate the original study conducted under the Japanese recording style. However, we did not find any evidence supporting the presence of CPB. These results suggest that CPB may not be robust, at least under the Japanese recording style.

Efficacy of neurofeedback training for improving attentional performance in healthy adults: A systematic review and meta-analysis
Ikko Kimura, Hiroki Noyama, Ryoji Onagawa, Mitsuaki Takemi, Rieko Osu, Jun-ichiro Kawahara
Imaging Neuroscience, 2, 1, 23, MIT Press, 05 Jan. 2024, [Peer-reviewed], [Last author]
English, Scientific journal, Abstract

This systematic review and meta-analysis examined the neurofeedback training (NFT) effects on attentional performance in healthy adults. Six databases were searched until June 2022 to identify parallel randomized controlled trials (RCTs) evaluating attentional improvements after NFT. Risk of bias was assessed using the Cochrane Collaboration tool. We identified 41 RCTs for qualitative synthesis and 15 RCTs (569 participants) for meta-analysis. The overall NFT effect on attentional performance was significant (standardized mean difference = 0.27, 95% confidence interval = 0.10–0.44). However, no significant pooled effect was found within the trials comparing its effect with sham-NFT (eight RCTs). Additionally, variable effects were observed on individual subsets of attentional performance. Further sham-controlled RCTs are required to validate the improvement of attentional performance with NFT.

Effects of wearing an opaque or transparent face mask on the perception of facial expressions: A comparative study between Japanese school-aged children and adults
Yuki Miyazaki, Miki Kamatani, Shuma Tsurumi, Tomokazu Suda, Kei Wakasugi, Kaori Matsunaga, Jun I Kawahara
Perception, 3010066231200693, 3010066231200693, 20 Sep. 2023, [International Magazine]
English, Scientific journal, The negative side effects of mask-wearing on reading facial emotional cues have been investigated in several studies with adults post-2020. However, little is known about children. This study aimed to determine the negative influence of mask-wearing on reading emotions of adult faces by Japanese school-aged children, compared to Japanese adults. We also examined whether this negative influence could be alleviated by using a transparent face mask instead of an opaque one (surgical mask). The performance on reading emotions was measured using emotion categorization and emotion intensity rating tasks for adult faces. As per the findings, the accuracy of emotion recognition in children was impaired for various facial expressions (disgust, fear, happy, neutral, sad, and surprise faces), except for angry faces. Conversely, in adults, it was impaired for a few facial expressions. The perceived intensity for happy faces with a surgical mask was weaker in both children and adults than in those without the mask. A negative influence of wearing surgical masks was generally not observed for faces wearing a transparent mask in both children and adults. Thus, negative side effects of mask-wearing on reading emotions are observed for more facial expressions in children than in adults; transparent masks can help remedy these.

Prefrontal GABA and glutamate-glutamine levels affect sustained attention.
Hirohito M Kondo, Hiroki Terashima, Ken Kihara, Takanori Kochiyama, Yasuhiro Shimada, Jun I Kawahara
Cerebral cortex (New York, N.Y. : 1991), 10 Aug. 2023, [International Magazine]
English, Scientific journal, Attention levels fluctuate during the course of daily activities. However, factors underlying sustained attention are still unknown. We investigated mechanisms of sustained attention using psychological, neuroimaging, and neurochemical approaches. Participants were scanned with functional magnetic resonance imaging (fMRI) while performing gradual-onset, continuous performance tasks (gradCPTs). In gradCPTs, narrations or visual scenes gradually changed from one to the next. Participants pressed a button for frequent Go trials as quickly as possible and withheld responses to infrequent No-go trials. Performance was better for the visual gradCPT than for the auditory gradCPT, but the 2 were correlated. The dorsal attention network was activated during intermittent responses, regardless of sensory modality. Reaction-time variability of gradCPTs was correlated with signal changes (SCs) in the left fronto-parietal regions. We also used magnetic resonance spectroscopy (MRS) to measure levels of glutamate-glutamine (Glx) and γ-aminobutyric acid (GABA) in the left prefrontal cortex (PFC). Glx levels were associated with performance under undemanding situations, whereas GABA levels were related to performance under demanding situations. Combined fMRI-MRS results demonstrated that SCs of the left PFC were positively correlated with neurometabolite levels. These findings suggest that a neural balance between excitation and inhibition is involved in attentional fluctuations and brain dynamics.

Occlusion of faces by sanitary masks improves facial attractiveness of other races
Kamatani, M, Miyazaki, Y, Kawahara, J. I
Frontiers in Psychology, 13, Frontiers Media SA, Jan. 2023, [Peer-reviewed], [Last author]
Scientific journal, Recent studies provide mixed results regarding whether the perception of facial attractiveness is increased or decreased by partial occlusion with a sanitary mask. One set of studies demonstrated that occluding the bottom half of a face increased facial attractiveness. This effect is thought to occur because the occluded area is interpolated by an average facial representation that is perceived as attractive. However, several groups of studies showed that partial occlusion can increase or decrease perceived attractiveness depending on the attractiveness of the original (unoccluded) face, due to regression to the mean. To reconcile this inconsistency, we propose that the occluded area is interpolated not by an average facial representation, but by a template of moderate attractiveness, shaped by the distribution of each viewer’s experience. This hypothesis predicts an interaction between occlusion and the attractiveness of the original face so that occluded attractive faces are rated as less attractive, while occluded unattractive faces are rated as more attractive. To examine this hypothesis, the present study used attractiveness-rating tasks with mask-free versus masked faces in own-race and other-races categories. Viewers were familiar with own-race faces and unfamiliar with other-races faces. If moderate-attractiveness interpolation were the explanatory factor, the interaction between the occlusion and the attractiveness of the original face should be found only in the rating of own-race faces. Consistent with this hypothesis, the interaction between the occlusion and the attractiveness of the original faces was significant only for the own-race faces. Specifically, wearing a sanitary mask decreased the facial attractiveness of attractive faces in the own-race, while it increased the attractiveness regardless of the level of facial attractiveness in other-races. These findings suggest that the occluded area of own-race faces is interpolated by a facial template of moderate attractiveness. The other-races template could be developed using familiar exemplars such as celebrities. Thus, interpolation by such a template should result in elevated attractiveness relative to that by an own-race template. Accordingly, the apparent inconsistency in the literature regarding the effect of partial occlusion on physical attractiveness can be explained in terms of differences in the template involving interpolation of the occluded area.

The Spill‐over Effect of Formal Bowing Motion on Subjective Facial Attractiveness1
Takayuki Osugi, Jun I. Kawahara
Japanese Psychological Research, Jan. 2023, [Peer-reviewed], [Last author]
Scientific journal

Attentional biases toward real images and drawings of negative faces
Tomoyuki Tanda, Kai Toyomori, Jun I. Kawahara
Acta Psychologica, 229, 103665, 103665, Sep. 2022, [Peer-reviewed], [Last author]
English, Scientific journal

Infants’ anticipatory eye movements: feature-based attention guides infants’ visual attention
Shuma Tsurumi, So Kanazawa, Masami K. Yamaguchi, Jun I. Kawahara
Experimental Brain Research, Springer Science and Business Media LLC, 29 Jul. 2022, [Peer-reviewed], [Last author]
Scientific journal

Processing symmetry between visual and auditory spatial representations in updating working memory
Tomoki Maezawa, Jun I Kawahara
Quarterly Journal of Experimental Psychology, 174702182211032, 174702182211032, SAGE Publications, 20 Jun. 2022, [Peer-reviewed], [Last author]
Scientific journal, Updating spatial representations in visual and auditory working memory relies on common processes, and the modalities should compete for attentional resources. If competition occurs, one type of spatial information is presumably weighted over the other, irrespective of sensory modality. This study used incompatible spatial information conveyed from two different cue modalities to examine relative dominance in memory updating. Participants mentally manoeuvred a designated target in a matrix according to visual or auditory stimuli that were presented simultaneously, to identify a terminal location. Prior to the navigation task, the relative perceptual saliences of the visual cues were manipulated to be equal, superior, or inferior to the auditory cues. The results demonstrate that visual and auditory information competed for attentional resources, such that visual/auditory guidance was impaired by incongruent cues delivered from the other modality. Although visual bias was generally observed in working-memory navigation, stimuli of relatively high salience interfered with or facilitated other stimuli regardless of modality, demonstrating the processing symmetry of spatial updating in visual and auditory spatial working memory. Furthermore, this processing symmetry can be identified during the encoding of sensory inputs into working-memory representations. The results imply that auditory spatial updating is comparable to visual spatial updating in that salient stimuli receive a high priority when selecting inputs and are used when tracking spatial representations.

The Attractiveness of Masked Faces Is Influenced by Race and Mask Attitudes
Veronica Dudarev, Miki Kamatani, Yuki Miyazaki, James T. Enns, Jun I. Kawahara
Frontiers in Psychology, 13, Frontiers Media SA, 17 May 2022, [Peer-reviewed], [Last author]
Scientific journal, This study tests the influence of wearing a protective face mask on the perceived attractiveness of the wearer. Participants who identified as White, and who varied in their ideological stance toward mask wearing, rated the attractiveness of facial photographs. The photos varied in baseline attractiveness (low, medium, and high), race (White and Asian), and whether or not the face was wearing a protective mask. Attitudes regarding protective masks were measured after the rating task using a survey to identify participants as either pro- or anti-mask. The results showed that masked individuals of the same race were generally rated as more attractive than unmasked individuals, but that masked individuals of another race were rated as less attractive than unmasked individuals. Moreover, pro-mask participants rated masked individuals as generally more attractive than unmasked individuals, whereas anti-maskers rated masked individuals as less attractive. A control experiment, replicating the procedure but replacing the protective masks with a partially occluding notebook, showed that these effects were mask-specific. These results demonstrate that perceived attractiveness is affected by characteristics of the viewer (attitudes toward protective masks), their relationship to the target (same or different race), and by circumstances external to both (pandemic).

Effects of wearing a transparent face mask on perception of facial expressions
Yuki Miyazaki, Miki Kamatani, Tomokazu Suda, Kei Wakasugi, Kaori Matsunaga, Jun I. Kawahara
i-Perception, 13, 3, 204166952211059, 204166952211059, {SAGE} Publications, May 2022, [Peer-reviewed], [Last author]
Scientific journal, Wearing face masks in public has become the norm in many countries post-2020. Although mask-wearing is effective in controlling infection, it has the negative side effect of occluding the mask wearer’s facial expressions. The purpose of this study was to investigate the effects of wearing transparent masks on the perception of facial expressions. Participants were required to categorize the perceived facial emotion of female (Experiment 1) and male (Experiment 2) faces with different facial expressions and to rate the perceived emotion intensity of the faces. Based on the group, the participants were assigned to, the faces were presented with a surgical mask, a transparent mask, or without a mask. The results showed that wearing a surgical mask impaired the performance of reading facial expressions, both with respect to recognition and perceived intensity of facial emotions. Specifically, the impairments were robustly observed in fear and happy faces for emotion recognition, and in happy faces for perceived intensity of emotion in Experiments 1 and 2. However, the impairments were moderated by wearing a transparent mask instead of a surgical mask. During the coronavirus disease 2019 (COVID-19) pandemic, the transparent mask can be used in a range of situations where face-to-face communication is important.

Development of upper visual field bias for faces in infants
Shuma Tsurumi, So Kanazawa, Masami K. Yamaguchi, Jun‐ichiro Kawahara
Developmental Science, Wiley, 06 Apr. 2022, [Peer-reviewed], [Last author]
Scientific journal

Dynamic Transitions Between Brain States Predict Auditory Attentional Fluctuations
Hirohito M. Kondo, Hiroki Terashima, Takahiro Ezaki, Takanori Kochiyama, Ken Kihara, Jun I. Kawahara
Frontiers in Neuroscience, 16, 816735, 816735, Frontiers Media SA, 18 Mar. 2022, [Peer-reviewed], [International Magazine]
English, Scientific journal, Achievement of task performance is required to maintain a constant level of attention. Attentional level fluctuates over the course of daily activities. However, brain dynamics leading to attentional fluctuation are still unknown. We investigated the underlying mechanisms of sustained attention using functional magnetic resonance imaging (fMRI). Participants were scanned with fMRI while performing an auditory, gradual-onset, continuous performance task (gradCPT). In this task, narrations gradually changed from one to the next. Participants pressed a button for frequent Go trials (i.e., male voices) as quickly as possible and withheld responses to infrequent No-go trials (i.e., female voices). Event-related analysis revealed that frontal and temporal areas, including the auditory cortex, were activated during successful and unsuccessful inhibition of predominant responses. Reaction-time (RT) variability throughout the auditory gradCPT was positively correlated with signal changes in regions of the dorsal attention network: superior frontal gyrus and superior parietal lobule. Energy landscape analysis showed that task-related activations could be clustered into different attractors: regions of the dorsal attention network and default mode network. The number of alternations between RT-stable and erratic periods increased with an increase in transitions between attractors in the brain. Therefore, we conclude that dynamic transitions between brain states are closely linked to auditory attentional fluctuations.

Auditory enhancement of visual searches for event scenes
Tomoki Maezawa, Miho Kiyosawa, Jun I. Kawahara
Attention, Perception, & Psychophysics, Springer Science and Business Media LLC, Feb. 2022, [Peer-reviewed], [Last author]
Scientific journal

A label indicating an old year of establishment improves evaluations of restaurants and shops serving traditional foods
Tomoki Maezawa, Jun I. Kawahara
PLOS ONE, 16, 11, e0259063, e0259063, Public Library of Science (PLoS), 10 Nov. 2021, [Peer-reviewed]
Scientific journal, This study examined whether the presence of product information focused on a past era (e.g., year of establishment) improved consumers’ evaluations of a shop serving traditional products when the label and shop were congruent in terms of temporal focus. Across five experiments, participants viewed and evaluated advertisements from traditional food restaurants and shops that showed an old year of establishment. They showed favorable evaluations of the restaurants and food shops more frequently when a label focused on the past was displayed than when the label was absent or when a label focused on the present was displayed. Subsequent experiments indicated that this labeling effect was strongest when the label and shop were consistent in terms of traditional culture such that the year of establishment on the label showed the Japanese era name (Japan’s traditional date format) and was accompanied by Japanese classic foods. Importantly, in this study, qualitative domains were consistently improved more often than were ratings of visit intention and expected taste. The results suggest that temporal congruence between the label and restaurants rated plays an essential role in ensuring that these advertisements are effective in improving positive evaluations.

Wearing a mint-scented face mask reduces appetite
Yuki Miyazaki, Jun Kawahara
Center for Open Science, 06 Oct. 2021
Scientific journal

Beat Patterns Determine Inter-Hand Differences in Synchronization Error in a Bimanual Coordination Tapping Task
Yuka Saito, Tomoki Maezawa, Jun I. Kawahara
i-Perception, 12, 5, 204166952110538, 204166952110538, SAGE Publications, Sep. 2021
Scientific journal, A previous study reported the unique finding that people tapping a beat pattern with the right hand produce larger negative synchronization error than when tapping with the left hand or other effectors, in contrast to previous studies that have shown that the hands tap patterns simultaneously without any synchronization errors. We examined whether the inter-hand difference in synchronization error occurred due to handedness or to a specificity of the beat pattern employed in that study. Two experiments manipulated the hand–beat assignments. A comparison between the identical beat to the pacing signal and a beat with a longer interval excluded the handedness hypothesis and demonstrated that beat patterns with relatively shorter intervals were tapped earlier (Experiment 1). These synchronization errors were not local but occurred consistently throughout the beat patterns. Experiment 2 excluded alternative explanations. These results indicate that the apparent inconsistency in previous studies was due to the specificity of the beat patterns, suggesting that a beat pattern with a relatively shorter interval between hands is tapped earlier than beats with longer intervals. Our finding that the bimanual tapping of different beat patterns produced different synchronization errors suggests that the notion of a central timing system may need to be revised.

Attentional blink in preverbal infants
Tsurumi, S, Kanazawa, S, Yamaguchi, M. K, Kawahara, J. I
Cognition, 214, 104749, 104749, Elsevier BV, Sep. 2021, [Peer-reviewed], [International Magazine]
English, Scientific journal, Primary cognitive processes, such as spatial attention, are essential to our higher cognitive abilities and develop dramatically in the first year of life. The spatial aspect of infants' working memory is equivalent to that of adults. However, it is unclear whether this is true for the temporal domain. Thus, we investigated the temporal aspect of infants' working memory using an attentionally demanding task by focusing on the attentional blink effect, in which the identification of the second of the two brief targets is impaired when inter-target lags are short. We argue that finding a similar pattern of the attentional blink in preverbal infants and adults indicates that infants can complete the consolidation of the first target into working memory at a similar temporal scale as adults. In this experiment, we presented 7- to 8-month-old infants with rapid serial visual streams at a rate of 100 ms/item, including two female faces as targets, and examined whether they could identify the targets by measuring their preference to novel faces compared to targets. The temporal separation between the two targets was 200 or 800 ms. We found that the infants could identify both targets under the longer lag, but they failed to identify the second target under the shorter lag. The adult experiment using the same temporal separation as in the infant experiment revealed the attentional blink effect. These results suggest that 7- to 8-month-old infants can consolidate two items into working memory by 800 ms but not by 200 ms.

The impact of the COVID-19 epidemic on explicit and implicit attitudes towards black sanitary mask wearers
Miki Kamatani, Motohiro Ito, Yuki Miyazaki, Jun I. Kawahara
The Japanese journal of psychology, 92, 5, 350, 359, The Japanese Psychological Association, Jul. 2021, [Peer-reviewed], [Last author]
Scientific journal

Effects of Masks Worn to Protect Against COVID-19 on the Perception of Facial Attractiveness
Miki Kamatani, Motohiro Ito, Yuki Miyazaki, Jun I. Kawahara
i-Perception, May 2021, [Peer-reviewed], [Last author, Corresponding author]
Scientific journal

Commonalities of visual and auditory working memory in a spatial-updating task
Tomoki Maezawa, Jun I. Kawahara
Memory & Cognition, 49, 6, 1172, 1187, 22 Feb. 2021, [Peer-reviewed], [Last author]
English, Scientific journal

The influence of social anxiety, trait anxiety, and perceived vulnerability to disease on the frequency of face mask wearing
Yuki Miyazaki, Miki Kamatani, Jun I. Kawahara
The Japanese journal of psychology, 92, 5, 339, 349, The Japanese Psychological Association, 2021
Scientific journal

Inhibitory template for visual marking with endogenous spatial cueing
Kenji Yamauchi, Jun I. Kawahara
Visual Cognition, 28, 10, 581, 604, Informa {UK} Limited, 25 Nov. 2020, [Peer-reviewed], [Last author]
English, Scientific journal

顔面下部のサイズ情報が顔の見かけの大きさに強く影響する　　　　　　　　　　　　　　　
宮崎由樹, 伊藤資浩, 神山龍一, 柴田彰, 河原純一郎
人間工学, 56, 6, 222, 230, Nov. 2020, [Peer-reviewed], [Last author]
Scientific journal

Common principles underlie the fluctuation of auditory and visual sustained attention
Hiroki Terashima, Ken Kihara, Jun Kawahara, Hirohito M Kondo
Quarterly Journal of Experimental Psychology, 74, 4, 174702182097225, 174702182097225, 26 Oct. 2020, [Peer-reviewed]
English, Scientific journal

Search and concealment strategies in the spatiotemporal domain
Motohiro Ito, Jun-ichiro Kawahara
Attention, Perception, & Psychophysics, 82, 5, 2393, 2414, Springer Science and Business Media LLC, Jul. 2020, [Peer-reviewed], [Last author]
Scientific journal

Replicability of the curvature effect as a function of presentation time and response measure in Japanese observers
Maezawa, T., Kawahara, J.
i-Perception, 11, 2, Mar. 2020, [Peer-reviewed], [International Magazine]
Ewe, Scientific journal

An object-based template for rejection effect
Tomoyuki Tanda, Jun Kawahara
Visual Cognition, 10 Feb. 2020, [Peer-reviewed]
English, Scientific journal

Effects of bowing and physical characteristics on perception of attractiveness　　　　　　　　　　　　　　　
大杉尚之, 河原純一郎
認知心理学研究, 17, 2, 69, 77, Feb. 2020, [Peer-reviewed]
Japanese, Scientific journal

衛生マスクへの着香が花粉症の不快感低減に及ぼす効果とその時間的推移　　　　　　　　　　　　　　　
前澤知輝, 宮崎由樹, 松長芳織, 柴田彰, 河原純一郎
人間工学, 2020, [Peer-reviewed]
Japanese, Scientific journal

Distance estimation by blindfolded sighted participants using echolocation　　　　　　　　　　　　　　　
Maezawa, T, Kawahara, J
Perception, Oct. 2019, [Peer-reviewed]
English, Scientific journal, Auditory perceived distance can be distorted in one’s internal representation. Thus, the present study examined whether blindfolded sighted participants could reduce the bias and preserve estimated distance for 5–15 s using echolocation. The participants performed a delayed reproduction task that consisted of testing sessions on two separate days in which the target distance was manipulated from 20–50 cm. Participants were blindfolded and asked to reproduce the distance of a target after a temporal delay of several seconds using click bursts produced by a loudspeaker. The testing session was preceded by a practice session that included training and feedback. The relationship between estimated and actual distances was approximated based on a power function and the over- and underestimation of the target distance on each test day. Although participants showed systematic bias in distance estimation on both days, participants changed their bias in the second session by shifting reproduced locations closer to their bodies, the accuracy and consistency of their responses improved across the two days. Neither accuracy nor consistency were affected by the retention intervals. These enhancements of performance might be due to improved hearing ability and/or calibration of internal spatial references through a practice session.

The effect of cue lead time on the template for rejection
Tanda, T, Kawahara, J
Attention, Perception, & Psychophysics, 81, 6, 1880, 1889, Aug. 2019, [Peer-reviewed]
English, Scientific journal

Effects of visual working memory on individual differences in echolocation performance in sighted participants
Maezawa, T, Kawahara, J
i-Perception, 10, 4, Jul. 2019, [Peer-reviewed]
English, Scientific journal

The effects of visual impediment on the approaching behavior of harbor porpoise, Phocoena phocoena
Maezawa, T, Matsuishi, T, Ito, K, Kaji, S, Tsunokawa, M, Kawahara, J
Mammal Study, 44, 3, 205, 213, Jul. 2019, [Peer-reviewed]
English, Scientific journal

Rapid identification of the face in infants
Tsurumi, S, Kanazawa, S, Yamaguchi, M, Kawahara, J
Journal of Experimental Child Psychology, 186, 45, 58, Jun. 2019, [Peer-reviewed]
English, Scientific journal

ウェットティッシュの取り出しやすさが製品の印象や製品選択に及ぼす影響　　　　　　　　　　　　　　　
宮崎由樹, 神山龍一, 三宅大輔, 河原純一郎
人間工学, May 2019, [Peer-reviewed]
Japanese, Scientific journal

Predicting sustained performance over a short time
Yamauchi, K, Kawahara, J
Japanese Journal of Psychonomic Science, 2019, [Peer-reviewed]
English, Scientific journal

A singleton distractor updates the inhibitory template for visual marking
Yamauchi, K., Kawahara, J.I.
Acta Psychologica, 192, 200, 211, 2019, [Peer-reviewed]
English, Scientific journal

Measurement of Mood States Following Light Alcohol Consumption: Evidence from the Implicit Association Test
Motohiro Ito, Naoyuki Matsuzaki, Jun Kawahara
Behavioral Sciences, 8, 9, 79, 79, {MDPI} {AG}, 03 Sep. 2018, [Peer-reviewed]
English, Scientific journal

Effects of Head Nodding and Shaking Motions on Perceptions of Likeability and Approachability
Takayuki Osugi, Jun I. Kawahara
Perception, 47, 1, 16, 29, SAGE Publications Ltd, 01 Jan. 2018, [Peer-reviewed]
English, Scientific journal

Sex differences in temporal but not spatial attentional capture
Inukai, T., Kawahara, J.I.
Frontiers in Psychology, 9, OCT, 2018, [Peer-reviewed]
English, Scientific journal

黒色の衛生マスクの着用が印象と魅力の知覚に及ぼす影響
伊藤資浩, 河原純一郎
北海道心理学研究, 2018, [Peer-reviewed]
Japanese, Scientific journal

The effect of participants’ stress manipulation on experimenters’ mood states
Sato, H, Kawahara, J
Psychology, 8, 1229, 1237, Aug. 2017, [Peer-reviewed]
English, Scientific journal

Effect of the Presence of a Mobile Phone during a Spatial Visual Search
Motohiro Ito, Jun-Ichiro Kawahara
JAPANESE PSYCHOLOGICAL RESEARCH, 59, 2, 188, 198, Apr. 2017, [Peer-reviewed]
English, Scientific journal

Attention capture without awareness in a non-spatial selection task
Chris Oriet, Mamata Pandey, Jun-Ichiro Kawahara
CONSCIOUSNESS AND COGNITION, 48, 117, 128, Feb. 2017, [Peer-reviewed]
English, Scientific journal

Auditory and visual scene analysis: an overview
Hirohito M. Kondo, Anouk M. van Loon, Jun-Ichiro Kawahara, Brian C. J. Moore
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 372, 1714, Feb. 2017, [Peer-reviewed], [Invited]
English, Scientific journal

Multiple attentional sets while monitoring rapid serial visual presentations
Jun I. Kawahara, Takatsune Kumada
QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY, 70, 11, 2271, 2289, 2017, [Peer-reviewed]
English, Scientific journal

Differential Contributions of GABA Concentration in Frontal and Parietal Regions to Individual Differences in Attentional Blink
Ken Kihara, Hirohito M. Kondo, Jun I. Kawahara
JOURNAL OF NEUROSCIENCE, 36, 34, 8895, 8901, Aug. 2016, [Peer-reviewed]
English, Scientific journal

The Sanitary-Mask Effect on Perceived Facial Attractiveness
Yuki Miyazaki, Jun-Ichiro Kawahara
JAPANESE PSYCHOLOGICAL RESEARCH, 58, 3, 261, 272, Jul. 2016, [Peer-reviewed]
English, Scientific journal

Attentional capture during attentional awakening
Tomoe Inukai, Tomonari Shimomura, Jun I. Kawahara
ATTENTION PERCEPTION & PSYCHOPHYSICS, 78, 1, 159, 167, Jan. 2016, [Peer-reviewed]
English, Scientific journal

Contingent attentional capture across multiple feature dimensions in a temporal search task
Motohiro Ito, Jun I. Kawahara
ACTA PSYCHOLOGICA, 163, 107, 113, Jan. 2016, [Peer-reviewed]
English, Scientific journal

Attentional capture by completely task-irrelevant faces
Shiori Sato, Jun I. Kawahara
PSYCHOLOGICAL RESEARCH-PSYCHOLOGISCHE FORSCHUNG, 79, 4, 523, 533, Jul. 2015, [Peer-reviewed]
English, Scientific journal

Effects of bowing on perception of attractiveness
Takayuki Osugi, Jun I. Kawahara
ATTENTION PERCEPTION & PSYCHOPHYSICS, 77, 5, 1697, 1714, Jul. 2015, [Peer-reviewed]
English, Scientific journal

Pupillometric evidence for the locus coeruleus-noradrenaline system facilitating attentional processing of action-triggered visual stimuli
Ken Kihara, Tatsuto Takeuchi, Sanae Yoshimoto, Hirohito M. Kondo, Jun I. Kawahara
FRONTIERS IN PSYCHOLOGY, 6, JUN, Jun. 2015, [Peer-reviewed]
English, Scientific journal

Word attribute effects on and error analysis of spelling of Kanji words in normal Japanese adults
Noriko Akashi, Ami Sambai, Akira Uno, Junichiro Kawahara, Max Coltheart
Japan Journal of Logopedics and Phoniatrics, 55, 2, 162, 166, Japan Society of Logopedics and Phoniatrics, 2014, [Peer-reviewed]
Japanese, Scientific journal

グループ全体としての顔魅力知覚
鑓水秀和, 河原純一郎
認知科学, 21, 314, 324, 2014, [Peer-reviewed]

成人の漢字単語書き取りにおける単語属性効果および誤反応特徴　　　　　　　　　　　　　　　
明石法子, 三盃亜美, 宇野彰, 河原純一郎, Cortheart, M
音声言語医学, 55, 162-166, 2014, [Peer-reviewed]

Stimulus response compatibility between stimulus conceptual knowledge and response force
NAGAI Masayoshi, YAMADA Yohei, KAWAHARA Jun-Ichiro
The Proceedings of the Annual Convention of the Japanese Psychological Association, 77, 2PM-024, 2PM-024, The Japanese Psychological Association, 19 Sep. 2013
Japanese

The role of cognitive functions in merging manoeuvres during simulated highway driving.
Kawahara, J, Sato, T, Nagai, M, Kumada, T, Soma, Y, Nemoto, H, Nishizaki, Y
Japanese Journal of Psychonomic Science., 32, 1, 14-28, 28, The Japanese Psychonomic Society, Sep. 2013
English, The present study examined a model of the role of cognitive functions related to attention and decision making in merging manoeuvres during simulated highway driving. To test this model, we screened participants who scored high or low on two sets of tasks that were assumed to represent attentional function and decisiveness. We then conducted a driving simulation experiment in which attentional function and decisiveness were between-subject factors and task difficulty was varied as a within-subject factor. The results indicated that the attentional function was the primarily determinant of the swiftness and success of merging. The role of decisiveness was confined primarily to the activation of the turn signal. Thus, the present experiment suggests that attention is the cognitive function that determines performance during merging behaviour in the setting under examination. Exploratory multivariate analyses confirmed the measureable behaviour obtained from the simulation. The present results provided information about the cognitive functions for merging behaviour that may be useful to the automobile industry.

The effect of fatigue on the attentional blink
Jun I. Kawahara, Hirotsune Sato
ATTENTION PERCEPTION & PSYCHOPHYSICS, 75, 6, 1096, 1102, Aug. 2013, [Peer-reviewed]
English, Scientific journal

Analysis of Factors Influencing Driver Fatigue Accumulation on Long Trips and Classification of Individual Differences of the Fatigue Accumulation during Long-Term Driving
Sato Toshihisa, Kawahara Junichiro, Kumada Takatsune, Akamatsu Motoyuki
Transactions of Society of Automotive Engineers of Japan, 44, 6, 1451, 1458, Society of Automotive Engineers of Japan, 2013
Japanese, This paper describes an investigation of factors influencing driver’s fatigue while driving for a long time and a classification of drivers based on the obtained factors that are related to a sensitivity to fatigue during the long-trip drives. We conducted questionnaire survey which included candidates of the influencing factors on the driver’s fatigue on long trips, changes of driver’s conditions related to the driver’s fatigue, and compensatory behaviors after the driver feels the fatigue. The factor analysis suggested five factors: careful and frequent operations, deceleration due to movements of other vehicles, disturbance of concentration on driving operations, bad conditions of road environments, and bad physical conditions. The cluster analysis of the factor scores indicates two main types and six subgroups of drivers sensitive to the fatigue resulting from long-term driving.

Implicit Positive Affect Induction Broadens Scope of Visual Processing
Fuji Kei, Sato Hirotsune, Kawahara Jun-Ichiro, Nagai Masayoshi
Cognitive Studies, 20, 4, 498, 501, Japanese Cognitive Science Society, 2013
Japanese, Scientific journal, このたびは，大会発表賞という栄えある賞を賜り，大変光栄に存じております．受賞の機会を下さいました学会運営委員，選考委員会の先生方に心より御礼申します．また，会場での発表に耳を傾けて下さり，本研究を評価くださった皆様にも，深く感謝致します．この研究では，わずかな身体・表情の変化によって，自覚もなされないうちに認知処理のあり方が変容するという現象について検討しました．昨今のインターネットやメディアの発展に伴い，徐々に失われつつある身体・表情を介したコミュニケーションにも，人々の視野を広げ思考を彩る様々な可能性が内包されていることを示す結果が得られたかと考えております．今回の受賞を励みに，今後もまた，研究を重ねていく所存です． 最後になりますが，長きに渡り丁寧にご指導を下さった永井聖剛先生，折に触れ的確なご助言を下さいました河原純一郎先生，佐藤広英先生のご尽力に，この場をお借りして改めて心より感

The effect of variance in members' attractiveness on perceived group attractiveness
Jun Kawahara, Michiteru Kitazaki
Proceedings - SAP 2013: ACM Symposium on Applied Perception, 141, 2013, [Peer-reviewed]
English, International conference proceedings

Attentional set protects visual marking from visual transients
Takayuki Osugi, Jun I. Kawahara
QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY, 66, 1, 69, 90, Jan. 2013, [Peer-reviewed]
English, Scientific journal

Effects of acute stress on selective attention
Takenaka, I, Kawahara, J. I, Kumada, T
The Japanese Journal of Psychonomic Science, 31, 1, 42, 56, The Japanese Psychonomic Society, Sep. 2012, [Peer-reviewed], [Corresponding author]
Japanese, In cognitive psychology, increasing task load impairs effortful processing such as selective attention and working memory operations (accessing/updating). However, it is unclear whether stress, which is assumed to be a factor that consumes cognitive resources, has a similar effect as task load on selective attention and working memory. Herein a literature review reveals that the apparently mixed findings with regard to working memory can be interpreted based on task load; the effect of stress emerges only with high task loads. In contrast, psycho-social stress tends to impair selective attention, but physical stress may improve it. Moreover, some recent studies have found that psycho-social stress interacts with perceptual load, suggesting that load and stress manipulations consume common cognitive resources.

Attentional set protects visual marking from visual transients.　　　　　　　　　　　　　　　
Osugi, T, Kawahara, J
Quarterly Journal of Experimental Psychology, 18, 1, 22, 27 Jul. 2012, [Peer-reviewed]
English, Scientific journal

Voluntary triggering of the first target attenuates the attentional blink
Ken Kihara, Jun I. Kawahara
ATTENTION PERCEPTION & PSYCHOPHYSICS, 74, 2, 312, 321, Feb. 2012, [Peer-reviewed]
English, Scientific journal

Assessing acute stress with the Implicit Association Test
Hirotsune Sato, Jun-ichiro Kawahara
COGNITION & EMOTION, 26, 1, 129, 135, 2012, [Peer-reviewed]
English, Scientific journal

The effects of acute stress and perceptual load on distractor interference
Hirotsune Sato, Ippei Takenaka, Jun I. Kawahara
QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY, 65, 4, 617, 623, 2012, [Peer-reviewed]
English, Scientific journal

Attentional capture by the onset and offset of motion signals outside the spatial focus of attention
Jun Kawahara, Kaori Yanase, Michiteru Kitazaki
JOURNAL OF VISION, 12, 12, 2012, [Peer-reviewed]
English, Scientific journal

The Sparing Is Far From Spurious: Reevaluating Within-Trial Contingency Effects in the Attentional Blink
Christian N. L. Olivers, Johan Hulleman, Thomas Spalek, Jun-ichiro Kawahara, Vincent Di Lollo
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE, 37, 2, 396, 408, Apr. 2011, [Peer-reviewed]
English, Scientific journal

Distractor Devaluation Effect in the Attentional Blink: Direct Evidence for Distractor Inhibition
Ken Kihara, Yoshihiko Yagi, Yuji Takeda, Jun I. Kawahara
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE, 37, 1, 168, 179, Feb. 2011, [Peer-reviewed]
English, Scientific journal

Selective bias in retrospective self-reports of negative mood states
Hirotsune Sato, Jun-ichiro Kawahara
ANXIETY STRESS AND COPING, 24, 4, 359, 367, 2011, [Peer-reviewed]
English, Scientific journal

Object-based maintenance of temporal attention in rapid serial visual presentation
Atsunori Ariga, Jun-ichiro Kawahara, Katsumi Watanabe
VISUAL COGNITION, 19, 5, 553, 584, 2011, [Peer-reviewed]
English, Scientific journal

No commonality between attentional capture and attentional blink
Jun I. Kawahara, Ken Kihara
QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY, 64, 5, 991, 1008, 2011, [Peer-reviewed]
English, Scientific journal

Usability of liquid crystal displays for research in the temporal characteristics of perception and attention
Ken Kihara, Jun-Ichiro Kawahara, Yuji Takeda
BEHAVIOR RESEARCH METHODS, 42, 4, 1105, 1113, Nov. 2010, [Peer-reviewed]
English, Scientific journal

Visual marking survives graphical change if meaning is retained
Takayuki Osugi, Takatsune Kumada, Jun Kawahara
ATTENTION PERCEPTION & PSYCHOPHYSICS, 72, 8, 2144, 2156, Nov. 2010, [Peer-reviewed]
English, Scientific journal

Identifying a "default" visual search mode with operant conditioning
Jun-ichiro Kawahara
ACTA PSYCHOLOGICA, 135, 1, 38, 49, Sep. 2010, [Peer-reviewed]
English, Scientific journal

ATTENTIONAL CAPTURE AND METAATTENTIONAL JUDGMENT: A STUDY OF YOUNG CHILDREN, PARENTS, AND UNIVERSITY STUDENTS
Akiko Oh-uchi, Jun-ichiro Kawahara, Likio Sugano
PSYCHOLOGIA, 53, 2, 114, 124, Jun. 2010, [Peer-reviewed]
English, Scientific journal

Attentional capture decreases when distractors remain visible during rapid serial visual presentations
Tomoe Inukai, Takatsune Kumada, Jun-ichiro Kawahara
ATTENTION PERCEPTION & PSYCHOPHYSICS, 72, 4, 939, 950, May 2010, [Peer-reviewed]
English, Scientific journal

Nonspatial interdimensional attentional capture
Tomoe Inukai, Jun-ichiro Kawahara, Takatsune Kumada
ATTENTION PERCEPTION & PSYCHOPHYSICS, 72, 3, 658, 666, Apr. 2010, [Peer-reviewed]
English, Scientific journal

Measuring the spatial distribution of the metaattentional spotlight
Jun-ichiro Kawahara
CONSCIOUSNESS AND COGNITION, 19, 1, 107, 124, Mar. 2010, [Peer-reviewed]
English, Scientific journal

Flicker is a Primitive Visual Attribute in Visual Search
Thomas M. Spalek, Jun-ichiro Kawahara, Vincent Di Lollo
CANADIAN JOURNAL OF EXPERIMENTAL PSYCHOLOGY-REVUE CANADIENNE DE PSYCHOLOGIE EXPERIMENTALE, 63, 4, 319, 322, Dec. 2009, [Peer-reviewed]
English, Scientific journal

Stress Measurement Based on Performance of Cognitive Tasks for Future Use in the ISS
KUMADA Takatsune, KAWAHARA Jun-ichiro, TAKEDA Yuji, NAGAI Masayoshi, TAKITA Masatoshi
JASMA, 26, 4, 260, 268, 日本マイクログラビティ応用学会, 19 Oct. 2009
Japanese

Long-term Abstract Learning of Attentional Set
Andrew B. Leber, Jun-Ichiro Kawahara, Yuji Gabari
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE, 35, 5, 1385, 1397, Oct. 2009, [Peer-reviewed]
English, Scientific journal

When Do Additional Distractors Reduce the Attentional Blink?
Jun-ichiro Kawahara
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE, 35, 4, 1043, 1061, Aug. 2009, [Peer-reviewed]
English, Scientific journal

The spatial distribution of inhibition in preview search
Takayuki Osugi, Takatsune Kumada, Jun-ichiro Kawahara
VISION RESEARCH, 49, 8, 851, 861, May 2009, [Peer-reviewed]
English, Scientific journal

The attentional blink: Increasing target salience provides no evidence for resource depletion. A commentary on Dux, Asplund, and Marois (2008)
Christian N. L. Olivers, Thomas M. Spalek, Jun-Ichiro Kawahara, Vincent Di Lollo
PSYCHONOMIC BULLETIN & REVIEW, 16, 1, 214, 218, Feb. 2009, [Peer-reviewed]
English, Scientific journal

Selection Difficulty and Interitem Competition Are Independent Factors in Rapid Visual Stream Perception
Jun-ichiro Kawahara, James T. Enns
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE, 35, 1, 146, 158, Feb. 2009, [Peer-reviewed]
English, Scientific journal

Past rejections lead to future misses: Selection-related inhibition produces blink-like misses of future (easily detectable) events
Alejandro Lleras, Jun-ichiro Kawahara, Brian R. Levinthal
JOURNAL OF VISION, 9, 3, 26.1, 12, 2009, [Peer-reviewed]
English, Scientific journal

Visual marking survives graphical change without semantic change.　　　　　　　　　　　　　　　
Osugi, T, Kumada, T, Kawahara, J
Journal of Vision, 9, 1175, 1175, 2009, [Peer-reviewed]
English

The remains of the trial: goal-determined inter-trial suppression of selective attention
Alejandro Lleras, Brian R. Levinthal, Jun Kawahara
ATTENTION, 176, 195, 213, 2009, [Peer-reviewed]
English, In book

Electrophysiological evidence for independent consolidation of multiple targets
Ken Kihara, Jun-ichiro Kawahara, Yuji Takeda
NEUROREPORT, 19, 15, 1493, 1496, Oct. 2008, [Peer-reviewed]
English, Scientific journal

The effect of false memory on temporal perception
Fuminori Ono, Jun-ichiro Kawahara
PSYCHOLOGICAL RESEARCH-PSYCHOLOGISCHE FORSCHUNG, 72, 1, 61, 64, Jan. 2008, [Peer-reviewed]
English, Scientific journal

Intertrial inhibition of focused attention in pop-out search
Alejandro Lleras, Jun-Ichiro Kawahara, Xiaoang Irene Wan, Atsunori Ariga
PERCEPTION & PSYCHOPHYSICS, 70, 1, 114, 131, Jan. 2008, [Peer-reviewed]
English, Scientific journal

The spatial distribution of visual marking.　　　　　　　　　　　　　　　
Osugi, T, Kumada, T, Kawahara, J
Journal of Vision, 8, 1115, 1115, 2008, [Peer-reviewed]
English

Does attention accompany the conscious awareness of both location and identity of an object?
Ghorashi, S., Jefferies, L.N., Kawahara, J.-I., Watanabe, K.
Psyche (Pasadena), 14, 2008, 2008, [Peer-reviewed]
Scientific journal

Intertrial inhibition of focused attention in pop-out search
Alejandro Lleras, Jun-Ichiro Kawahara, Xiaoang Irene Wan, Atsunori Ariga
PERCEPTION & PSYCHOPHYSICS, 70, 1, 114, 131, Jan. 2008, [Peer-reviewed]
English, Scientific journal

Auditory-visual contextual cuing effect
Jun-Ichiro Kawahara
PERCEPTION & PSYCHOPHYSICS, 69, 8, 1399, 1408, Nov. 2007, [Peer-reviewed]
English, Scientific journal

Ignorance is bliss: The role of observer expectation in dynamic spatial tuning of the attentional focus
Lisa N. Jefferies, Shahab Ghorashi, Jun-Ichiro Kawahara, Vincent Di Lollo
PERCEPTION & PSYCHOPHYSICS, 69, 7, 1162, 1174, Oct. 2007, [Peer-reviewed]
English, Scientific journal

Dividing attention between two different categories and locations in rapid serial visual presentations
Yuki Yamada, Jun-Ichiro Kawahara
PERCEPTION & PSYCHOPHYSICS, 69, 7, 1218, 1229, Oct. 2007, [Peer-reviewed]
English, Scientific journal

Ignorance is bliss: The role of observer expectation in dynamic spatial tuning of the attentional focus
Lisa N. Jefferies, Shahab Ghorashi, Jun-Ichiro Kawahara, Vincent Di Lollo
PERCEPTION & PSYCHOPHYSICS, 69, 7, 1162, 1174, Oct. 2007, [Peer-reviewed]
English, Scientific journal

The subjective size of visual stimuli affects the perceived duration of their presentation
Fuminori Ono, Jun-Ichiro Kawahara
PERCEPTION & PSYCHOPHYSICS, 69, 6, 952, 957, Aug. 2007, [Peer-reviewed]
English, Scientific journal

The subjective size of visual stimuli affects the perceived duration of their presentation
Fuminori Ono, Jun-Ichiro Kawahara
PERCEPTION & PSYCHOPHYSICS, 69, 6, 952, 957, Aug. 2007, [Peer-reviewed]
English, Scientific journal

Feature-based attention influences later temporal perception
Fuminori Ono, Kyoko Yamada, Kazumitsu Chujo, Jun-Ichiro Kawahara
PERCEPTION & PSYCHOPHYSICS, 69, 4, 544, 549, May 2007, [Peer-reviewed]
English, Scientific journal

Feature-based attention influences later temporal perception
Fuminori Ono, Kyoko Yamada, Kazumitsu Chujo, Jun-Ichiro Kawahara
PERCEPTION & PSYCHOPHYSICS, 69, 4, 544, 549, May 2007, [Peer-reviewed]
English, Scientific journal

Area-specific attentional effect in the Delboeuf illusion
Jun-ichiro Kawahara, Tomohiro Nabeta, Jiro Hamada
PERCEPTION, 36, 5, 670, 685, 2007, [Peer-reviewed]
English, Scientific journal

Dividing attention between two different categories and locations in rapid serial visual presentations
Yuki Yamada, Jun-Ichiro Kawahara
Perception and Psychophysics, 69, 7, 1218, 1229, Psychonomic Society Inc., 2007, [Peer-reviewed]
English, Scientific journal

Auditory-visual contextual cuing effect
Jun-Ichiro Kawahara
Perception and Psychophysics, 69, 8, 1399, 1408, Psychonomic Society Inc., 2007, [Peer-reviewed]
English, Scientific journal

Implicit spatiotemporal learning of visual context during divided attention
KAWAHARA Jun-ichiro
The Japanese Journal of Psychonomic Science, 25, 2, 193, 198, The Japanese Psychonomic Society, 2007
English, Visual search performance can be facilitated implicitly through repetitive viewing of the same layout of a search display (the contextual cueing effect). Researchers know that selective attention affects the occurrence of the cueing effect, but it has not been clear whether divided attention has the same effect. By introducing an attentional blink procedure, this study tested whether implicit learning of visual displays occurs while attention is devoted to a primary task. Observers searched for two digits among distracter letters. In the training phase, the sequence of rapidly presented distracters was predictive of the location of the second target; an attentional blink effect was obtained. More importantly, when the predictive value was removed in the testing phase, search performance slowed. These results suggest that the visual system can acquire spatiotemporal contextual memory even when deprived of attentional resources.

The attentional blink is not a unitary phenomenon
Jun-ichiro Kawahara, James T. Enns, Vincent Di Lollo
PSYCHOLOGICAL RESEARCH-PSYCHOLOGISCHE FORSCHUNG, 70, 6, 405, 413, Nov. 2006, [Peer-reviewed]
English, Scientific journal

The attentional blink is governed by a temporary loss of control
Jun-Ichiro Kawahara, Takatsune Kumada, Vincent Di Lollo
PSYCHONOMIC BULLETIN & REVIEW, 13, 5, 886, 890, Oct. 2006, [Peer-reviewed]
English, Scientific journal

The attentional blink is governed by a temporary loss of control
Jun-Ichiro Kawahara, Takatsune Kumada, Vincent Di Lollo
PSYCHONOMIC BULLETIN & REVIEW, 13, 5, 886, 890, Oct. 2006, [Peer-reviewed]
English, Scientific journal

Two noncontiguous locations can be attended concurrently: Evidence from the attentional blink
Jun-Ichiro Kawahara, Yula Yamada
PSYCHONOMIC BULLETIN & REVIEW, 13, 4, 594, 599, Aug. 2006, [Peer-reviewed]
English, Scientific journal

Two noncontiguous locations can be attended concurrently: Evidence from the attentional blink
Jun-Ichiro Kawahara, Yula Yamada
PSYCHONOMIC BULLETIN & REVIEW, 13, 4, 594, 599, Aug. 2006, [Peer-reviewed]
English, Scientific journal

Congruency effect of presentation modality on false recognition of haptic and visual objects
T Nabeta, JI Kawahara
MEMORY, 14, 3, 307, 315, Apr. 2006, [Peer-reviewed]
English, Scientific journal

The effect of unconscious priming on temporal production
F Ono, J Kawahara
CONSCIOUSNESS AND COGNITION, 14, 3, 474, 482, Sep. 2005, [Peer-reviewed]
English, Scientific journal

Intertrial temporal contextual cuing: Association across successive visual search trials guides spatial attention
F Ono, J Kawahara, YH Jiang
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-HUMAN PERCEPTION AND PERFORMANCE, 31, 4, 703, 712, Aug. 2005, [Peer-reviewed]
English, Scientific journal

System reconfiguration, not resource depletion, determines the efficiency of visual search
Di Lollo, V, D Smilek, JI Kawahara, SMS Ghorashi
PERCEPTION & PSYCHOPHYSICS, 67, 6, 1080, 1087, Aug. 2005, [Peer-reviewed]
English, Scientific journal

System reconfiguration, not resource depletion, determines the efficiency of visual search
Di Lollo, V, D Smilek, JI Kawahara, SMS Ghorashi
PERCEPTION & PSYCHOPHYSICS, 67, 6, 1080, 1087, Aug. 2005, [Peer-reviewed]
English, Scientific journal

Priority information used for the processing of Japanese sentences: Thematic roles, case particles or grammatical functions?
K Tamaoka, H Sakai, J Kawahara, Y Miyaoka, H Lim, M Koizumi
JOURNAL OF PSYCHOLINGUISTIC RESEARCH, 34, 3, 281, 332, May 2005, [Peer-reviewed]
English, Scientific journal

Priority information used for the processing of Japanese sentences: Thematic roles, case particles or grammatical functions?
K Tamaoka, H Sakai, J Kawahara, Y Miyaoka, H Lim, M Koizumi
JOURNAL OF PSYCHOLINGUISTIC RESEARCH, 34, 3, 281, 332, May 2005, [Peer-reviewed]
English, Scientific journal

The attentional blink: Resource depletion or temporary loss of control?
Di Lollo, V, J Kawahara, SMS Ghorashi, JT Enns
PSYCHOLOGICAL RESEARCH-PSYCHOLOGISCHE FORSCHUNG, 69, 3, 191, 200, Jan. 2005, [Peer-reviewed]
English, Scientific journal

The effect of study-phase length on auditory false recognition
NABETA Tomohiro, KAWAHARA Jun-ichiro, CHUJO Kazumitsu
The Japanese Journal of Psychonomic Science, 24, 1, 11, 15, The Japanese Psychonomic Society, 2005
English, Studying a list of words that are semantically related to an unseen word creates a false recognition. In the visual domain, research shows that false recognition increases when the length of the study phase is extended. This study examined whether the increase in false recognition is specific to the visual domain, or if it is common to another modality, such as the auditory domain. The results demonstrate that auditory false recognition increases when the insertion of an extra blank interval between words or between lists lengthens the study phase. Therefore, these findings suggest that processes not specific to visual modality mediate the effect of study phase length on false recognition.

Lag-1 sparing in the attentional blink with multiple RSVP streams
Yamada, Y, Kawahara, J
The Japanese Journal of Psychonomic Science, 24, 1, 1, 10, The Japanese Psychonomic Society, 2005, [Peer-reviewed]
English, Scientific journal, When two targets are presented in a rapid stream of distractors, the accuracy of identifying the second target is impaired when the temporal lag between the targets is brief (attentional blink; AB). When the second target is presented immediately after the first target, the AB deficit is considerably reduced, a phenomenon called Lag-1 sparing. A recent study (Kristjansson & Nakayama, 2002) however, reported that Lag-1 sparing did not occur when multiple distractor streams were presented, although it had occurred in other studies (e.g., Peterson & Juola, 2000). The present study found that specific target attributes were the key for this inconsistency. When two targets in the same stream appear to be similar and are distinctive from the distractors, the first target is masked by the second. This masking of the first target increases the AB deficit, and Lag-1 sparing does not occur.

[Are the visually marked items encoded as a context?].
Ono F, Nabeta T, Kawahara J
Shinrigaku kenkyu : The Japanese journal of psychology, 75, 3, 207, 212, 3, Aug. 2004, [Peer-reviewed]

An experimental paradigm for the processing of phonological assembly in the Japanese language
Kawahara Jun-ichiro, Tamaoka Katsuo, Maruishi Masaharu, Muranaka Hiroyuki
Bulletin of the Graduate School of Education, Hiroshima University. Part 3, Education and human science, 52, 215, 218, Hiroshima University, 28 Mar. 2004
Japanese, The present study investigated phonological assembly in the Japanese language. Twenty-eight native Japanese speakers were presented with CVCVCV-structured words and nonwords in hiragana. Participants were asked to make lexical decisions for 25 words and 25 nonwords. In the assembly condition, meaningful words were anagrammed so that participants had to assemble apparently nonsensical morae into a meaningful unit in order to make a lexical decision. The reaction times for the assembly condition were substantially slower (a difference of 1770 ms) than those for the control condition. This result suggests that phonological assembly for three hiragana morae is involved in identifing meaningful words from the Japanese lexicon.

Previous subthreshold exposures reduce perceived duration
F Ono, J Kawahara, F Matsuda
CAHIERS DE PSYCHOLOGIE COGNITIVE-CURRENT PSYCHOLOGY OF COGNITION, 22, 1, 27, 40, Feb. 2004, [Peer-reviewed]
English, Scientific journal

Are the visually marked items encoded as a context?
Ono, F., Nabeta, T., Kawahara, J.-I.
Shinrigaku Kenkyu, 75, 3, 207, 212, 2004, [Peer-reviewed]
Scientific journal

The perceptual and cognitive distractor-previewing effect
A Ariga, J Kawahara
JOURNAL OF VISION, 4, 10, 891, 903, 2004, [Peer-reviewed]
English, Scientific journal

The effects of phrase-length order and scrambling in the processing of visually presented Japanese sentences
K Tamaoka, H Sakai, J Kawahara, Y Miyaoka
JOURNAL OF PSYCHOLINGUISTIC RESEARCH, 32, 4, 431, 454, Jul. 2003, [Peer-reviewed]
English, Scientific journal

The effects of phrase-length order and scrambling in the processing of visually presented Japanese sentences
K Tamaoka, H Sakai, J Kawahara, Y Miyaoka
JOURNAL OF PSYCHOLINGUISTIC RESEARCH, 32, 4, 431, 454, Jul. 2003, [Peer-reviewed]
English, Scientific journal

Task switching mediates the attentional blink even without backward masking
JI Kawahara, SM Zuvic, JT Enns, Di Lollo, V
PERCEPTION & PSYCHOPHYSICS, 65, 3, 339, 351, Apr. 2003, [Peer-reviewed]
English, Scientific journal

Task switching mediates the attentional blink even without backward masking
JI Kawahara, SM Zuvic, JT Enns, Di Lollo, V
PERCEPTION & PSYCHOPHYSICS, 65, 3, 339, 351, Apr. 2003, [Peer-reviewed]
English, Scientific journal

Transfer of spatial context from visual to haptic search
T Nabeta, F Ono, J Kawahara
PERCEPTION, 32, 11, 1351, 1358, 2003, [Peer-reviewed]
English, Scientific journal

Rehabilitation technique facilitates association cortices in hemiparetic patients: functional MRI study
M Maruishi, H Muranaka, M Miyatani, J Kawahara, T Tsuji, S Noda, T Kajima
NEUROSURGICAL RE-ENGINEERING OF THE DAMAGED BRAIN AND SPINAL CORD, 87, 87, 75, 78, 2003, [Peer-reviewed]
English, International conference proceedings

The effect of observer's set on the processing of temporally distributed items
Jun-Ichiro Kawahara
Japanese Psychological Research, 45, 2, 109, 114, Blackwell Publishing Ltd, 2003, [Peer-reviewed]
English, Scientific journal

Facilitation of local information processing in the attentional blink as indexed by the shooting line illusion
Jun-Ichiro Kawahara
Psychological Research, 66, 2, 116, 123, 2, May 2002, [Peer-reviewed]
English, Scientific journal

Facilitation of local information processing in the attentional blink as indexed by the shooting line illusion
J Kawahara
PSYCHOLOGICAL RESEARCH-PSYCHOLOGISCHE FORSCHUNG, 66, 2, 116, 123, May 2002, [Peer-reviewed]
English, Scientific journal

Investigating Cognitive and Learning Processes of Languages through Writing Behavior : Developing Software for Writing Behavior
Kawahara Jun-ichiro, Tamaoka Katsuo, Chujo Kazumitsu, Matsumi Norio
Bulletin of the Graduate School of Education, Hiroshima University. Part 3, Education and human science, 50, 317, 324, Hiroshima University, 28 Feb. 2002
Japanese, There is little extistent literature that has investigated the process involved in writing Japanese two-morpheme (kanji) compound words. One reason for this scarcity has been the difficulty in devising instruments to measure latencies for writing behaviour. To asnwere this problem, we developed software that enabled us to present auditory stimuli, to measure writing latencies, to track trajectories during the writing of kanji characters, and to assist data analysis. This software runs on the Microsoft Windows 98 Operating System with a commercially available pen-tablet. Technical details of this software will be explained in this paper.

Preattentive perception of multiple illusory line-motion: A formal model of parallel independent-detection in visual search
JI Kawahara, K Yokosawa
JOURNAL OF GENERAL PSYCHOLOGY, 128, 4, 357, 383, Oct. 2001, [Peer-reviewed]
English, Scientific journal

The effect of informative and uninformative cueing of attention on feature integration
JI Kawahara, M Miyatani
JOURNAL OF GENERAL PSYCHOLOGY, 128, 1, 57, 75, Jan. 2001, [Peer-reviewed]
English, Scientific journal

The effect of meaning on visual image segmentation
SL Ngohayon, J Kawahara, T Toshima
PSYCHOLOGIA, 42, 3, 170, 182, Sep. 1999, [Peer-reviewed]
English, Scientific journal

Stimulus-driven Control of Attention : Evidence from Visual Search for Moving Target Among Static Nontargets
KAWAHARA Jun'ichiro, TOSHIMA Tamotsu
The Japanese Journal of Psychonomic Science, 15, 2, 77, 87, The Japanese Psychonomic Society, 1997
English, Previous research (Kawahara, 1996) suggest that visual attention is directed to the most salient stimulus in the visual field irrespective of the subjects' knowledge or intention (attentional capture). In the present study, we conducted two visual search experiments and confirmed the idea that visual attention is directed in the stimulus-driven way. Subjects searched for a target which was defined by motion. In one condition, the target was presented among static nontargets; in another condition, one of the nontarget was replaced with a task-irrelevant distractor which had a unique color. Experiment 1 showed that the presence of the distractor prolonged the reaction time for target identification even when the target can be detected independent of the total number of items in the stimulus display (display size). Decreasing the saliency of the distractor color diminished attentional capture (Experiment 2). These results are consistent with the notion of stimulus-driven way of attentional deployment. A further analysis and experiment were conducted to characterize the nature of attentional capture. The distance and the compatibility of features between the target and distractor were not significant determinant of attentional capture in the present study. Finally, a possibility and problem for proposing the single activation map model of attentional deployment was discussed.

Role of attention in illusory line motion search
Kawahara, J., Yokosawa, K.
Investigative Ophthalmology and Visual Science, 38, 4, 1997, [Peer-reviewed]
Scientific journal

Illusory line motion in visual search: Attentional facilitation or apparent motion?
J Kawahara, K Yokosawa, S Nishida, T Sato
PERCEPTION, 25, 8, 901, 920, 1996, [Peer-reviewed]
English, Scientific journal

The effect of stimulus-driven factor on attentional capture: Evidence from visual search paradigm containing static and dynamic stimuli
Jun'ichiro Kawahara
Shinrigaku Kenkyu, 67, 1, 25, 32, Japanese Psychological Association, 1996, [Peer-reviewed]
Japanese, Scientific journal

Object-specific priming in apparent motion display
H Yoshida, J Kawahara, S Maedo, T Toshima
JAPANESE JOURNAL OF PSYCHOLOGY, 66, 5, 354, 360, Dec. 1995, [Peer-reviewed]
English, Scientific journal

THE EFFECT OF STIMULUS MOTION ON VISUAL-SEARCH
J KAWAHARA
JAPANESE JOURNAL OF PSYCHOLOGY, 64, 5, 396, 400, Dec. 1993, [Peer-reviewed]
English, Scientific journal

日本心理学会 第89回大会 編集委員会シンポジウム 不採択・デスクリジェクションを防ぐために　　　　　　　　　　　　　　　
河原純一郎, Sep. 2025

Visual searches in real life
Kawahara Jun, Cognitive Studies: Bulletin of the Japanese Cognitive Science Society, 31, 4, 651, 659, 01 Dec. 2024
Searching is an inevitable behavior for us, but its accuracy is not perfect, and in most cases, it is slow and time-consuming due to optical and structural limitations. Moreover, searching is limited by cognitive bottlenecks: the number and content of objects that can be analyzed and matched to memory at any one time are restricted. Attention is an essential cognitive function during visual searches by prioritizing and selecting objects that seem important, allowing us to come to terms with these constraints. This functionality of attention has been primarily examined in the laboratory using visual search tasks. The present article reviews a brief history of research on visual attention, including visual searches and real-life application studies., Japanese Cognitive Science Society, Japanese

生脚による注意捕捉効果
鶴見周摩, 反田智之, 反田智之, 河原純一郎, 東北心理学研究, 71, 2023

物体検出における視野異方性
鶴見周摩, 河原純一郎, 基礎心理学研究, 41, 2, 2023

covert attentionの発達-方位と運動方向の弁別-
鶴見周摩, 鶴見周摩, 金沢創, 山口真美, 河原純一郎, 基礎心理学研究, 40, 2, 2022

乳児におけるcovert attentionの発達過程
鶴見周摩, 鶴見周摩, 金沢創, 山口真美, 河原純一郎, 基礎心理学研究, 39, 2, 2021

トクシュウ With コロナ ニ オケル シキサイ ノ 「 イマ 」
河原 純一郎, 宮崎 由樹, 伊藤 資浩, 鎌谷 美希, 日本色彩学会誌 = Journal of the Color Science Association of Japan, 44, 6, 262, 264, 2020
東京 : 日本色彩学会, Japanese

顔の上視野優位性の発達
鶴見周摩, 鶴見周摩, 金沢創, 山口真美, 河原純一郎, 基礎心理学研究, 38, 2, 2020

COVID-19 epidemic and the effect of wearing sanitary masks on facial impressions　　　　　　　　　　　　　　　
Kawahara, J, Miyazaki, Y, Ito, M, Kamatani, M, 日本色彩学会誌, 44, 6, 262, 264, 2020, [Invited], [Lead author, Corresponding author]

注意の瞬きは1歳未満の乳児でも生じるか?
鶴見周摩, 金沢創, 山口真美, 河原純一郎, 基礎心理学研究, 37, 2, 208, 31 Mar. 2019
Japanese

視聴覚の持続的注意の特性比較　　　　　　　　　　　　　　　
寺島裕貴, 木原健, 河原純一郎, 近藤洋史, 日本音響学会 聴覚研究会資料, 689, 694, Nov. 2018

Differences between self-perspective and others’ perspectives in assessing one’s own perceived facial attractiveness　　　　　　　　　　　　　　　
Miyazaki, Y, Kawahara, J. I, 59th Annual Meeting of the Psychonomic Society, Nov. 2018, [Peer-reviewed]
English, Summary international conference

乳児における高速遂時視覚呈示(RSVP)中の顔検出能力の検討　　　　　　　　　　　　　　　
鶴見 周摩, 金沢 創, 山口 真美, 河原 純一郎, Vision, 30, 1, 54, 55, Jan. 2018
日本視覚学会, Japanese

衛生マスクが顔の魅力と大きさの知覚に及ぼす効果　　　　　　　　　　　　　　　
河原 純一郎, 宮崎 由樹, FRAGRANCE JOURNAL, 45, 11, 48, 52, Nov. 2017
Japanese, Introduction commerce magazine

Importance of physical size of lower facial parts in perceived size of face　　　　　　　　　　　　　　　
Miyazaki, Y, Ito, M, Kamiyama, R, Shibata, A, Kawahara, J, The 81st Annual Convention of the Japanese Psychological Association, Sep. 2017
Japanese, Summary national conference

Selective attention
Kasai,T, Kawahara, J, 生理心理学と精神生理学, 33, 1, 1, 3, Aug. 2016, [Invited]
Japanese, Introduction other

Emerging Psychologists' Program: Cognitive, Developmental, and Personality studies
Jun-Ichiro Kawahara, INTERNATIONAL JOURNAL OF PSYCHOLOGY, 51, 632, 632, Jul. 2016
English, Summary international conference

The mere presence of a cell phone may result in a spatial bias toward the device
Motohiro Ito, Jun Kawahara, INTERNATIONAL JOURNAL OF PSYCHOLOGY, 51, 190, 190, Jul. 2016
English, Summary international conference

The effect of wearing sanitary mask on perceived size of face
Miyazaki, Y, Ito, M, Kamiyama, R, Shibata, A, Kawahara, J, The 14th Annual Convention of the Japanese Society for Cognitive Psychology, 2016, 43, 43, Jun. 2016
近年，衛生マスク (以下，マスク) は，風邪や花粉対策等の衛生用途以外にも使われる。例えば，若年女性の一部は，小顔に見せる為にマスクを利用することがある。本研究では，見た目の顔の大きさにマスクの着用が及ぼす効果を検証した。実験はマスク着用 (着用，非着用) と元々の見た目の顔の大きさ (小顔，中顔，大顔群) の2要因被験者内計画で実施した。被験者は，LCDに呈示された顔画像の見た目の顔の大きさを1 (小さい) から100 (大きい) の範囲で評定した。その結果，元々の見た目の顔の大きさに関わらず，マスク非着用画像に比べ，マスク着用画像の方が顔が小さく知覚されることが示された (マスク着用の効果量は小顔群に比べ，中顔・大顔群の方が大きかった)。この効果は，マスク着用で，顔の大きさ判断に用いられる視覚手がかり (咬筋部や下顎周りの皮膚厚等) が利用できなくなること，顔が遮蔽されたことによる錯視効果に基づくと考えられる。, The Japanese Society for Cognitive Psychology, Japanese, Summary national conference

The effect of unusual first name on impression formation of social evaluation
Ito, M, Miyazaki, Y, Kawahara, J, The 14th Annual Convention of the Japanese Society for Cognitive Psychology, 2016, 140, 140, Jun. 2016
外見や社会的地位だけでなく名前そのものが対人評価に影響することがある。例えば，名前の魅力や流暢性の高さが付加価値となり，社会的な評価場面において好意的な印象が形成される。本研究では，名前の奇抜さが見た目の社会性，特にリーダーシップ性に及ぼす影響を検証した。具体的に，名前の奇抜さ(奇抜な名前・一般的な名前)と元々の見た目のリーダーシップ性の程度(低群・中群・高群)を実験要因として，被験者は呈示される若年者の顔画像と名前から見た目のリーダーシップ性の程度を評価した。その結果，元々の見た目のリーダーシップ性の程度に関わらず，一般的な名前に比べて奇抜な名前が呈示されたとき，リーダーシップ性は低く評価された。またこの効果は，高齢者の顔画像が呈示されたとき強く生じた。これらの結果は，近年のいわゆるキラキラネームは社会性評価において付加価値とならず，外見に関わらず非好意的な印象を生むことを反映している。, The Japanese Society for Cognitive Psychology, Japanese, Summary national conference

Effects of a sanitary mask on perceived facial size and attractiveness　　　　　　　　　　　　　　　
Miyazaki, Y, Ito, M, Kamiyama, R, Shibata, A, Kawahara, J, International Meeting of the Psychonomic Society 2016, 195, May 2016, [Peer-reviewed]
English, Summary international conference

Louder voice for bigger physical movement: Compatibility between vocalization and action production
Masayoshi Nagai, Yohei Yamada, Jun-Ichiro Kawahara, Yukiko Nishizaki, PERCEPTION, 44, 245, 245, Aug. 2015
English, Summary international conference

Effects of Acute Stress on Cognitive Behavior
河原 純一郎, 佐藤 広英, ストレス科学 : 日本ストレス学会誌, 29, 1, 18, 28, 31 Jul. 2014
日本ストレス学会, Japanese

顔の魅力をグループ全体の平均として抽出できるか
鑓水秀和, 河原純一郎, 基礎心理学研究, 32, 2, 238, 30 Mar. 2014
Japanese

Irrelevant Faces Capture Attention Without Awareness
Mamata Pandey, Chris Oriet, Jun-ichiro Kawahara, CANADIAN JOURNAL OF EXPERIMENTAL PSYCHOLOGY-REVUE CANADIENNE DE PSYCHOLOGIE EXPERIMENTALE, 66, 4, 276, 276, Dec. 2012
English, Summary international conference

長時間運転疲労チェックシートの開発とドライバーの疲労タイプの分類
佐藤稔久, 河原純一郎, 熊田孝恒, 赤松幹之, 自動車技術会学術講演会前刷集, 118-12, 5, 10, 03 Oct. 2012
Japanese

Quantitative Measurement Method for Visual Discriminability of PTP Sheets
河原 純一郎, 熊田 孝恒, 小島 史靖, 包装技術, 49, 11, 779, 784, Nov. 2011
日本包装技術協会, Japanese

Attentional blink: resource depletion vs. selection
河原 純一郎, The Japanese journal of psychonomic science., 29, 2, 159, 163, Mar. 2011
日本基礎心理学会, Japanese

捕捉される注意と瞬く注意の共通性(日本基礎心理学会第28回大会,大会発表要旨)
木原 健, 河原 純一郎, 基礎心理学研究, 28, 2, 285, 285, 31 Mar. 2010
日本基礎心理学会, Japanese

ストレスの想起時に生じる選択的記憶バイアス(日本基礎心理学会第28回大会,大会発表要旨)
佐藤 広英, 河原 純一郎, 基礎心理学研究, 28, 2, 267, 267, 2010
日本基礎心理学会, Japanese

ストレスは注意資源を消費するのか?(日本基礎心理学会第28回大会,大会発表要旨)
竹中 一平, 佐藤 広英, 河原 純一郎, 熊田 孝恒, 基礎心理学研究, 28, 2, 286, 286, 2010
日本基礎心理学会, Japanese

RSVP事態における複数標的符号化処理の時間特性 : 事象関連電位研究(日本基礎心理学会第27回東北大会,大会発表要旨)
木原 健, 河原 純一郎, 武田 裕司, 基礎心理学研究, 27, 2, 171, 171, 31 Mar. 2009
日本基礎心理学会, Japanese

視覚的印付けへの意味変化の影響(日本基礎心理学会第27回東北大会,大会発表要旨)
大杉 尚之, 熊田 孝恒, 河原 純一郎, 基礎心理学研究, 27, 2, 172, 172, 31 Mar. 2009
日本基礎心理学会, Japanese

Flicker is a primitive visual attribute
Thomas Spalek, Jun-ichiro Kawahara, Vincent Di Lollo, CANADIAN JOURNAL OF EXPERIMENTAL PSYCHOLOGY-REVUE CANADIENNE DE PSYCHOLOGIE EXPERIMENTALE, 62, 4, 313, 313, Dec. 2008
English, Summary international conference

視覚的印付けに伴う抑制の空間的分布(日本基礎心理学会第26回大会,大会発表要旨)
大杉 尚之, 河原 純一郎, 熊田 孝恒, 基礎心理学研究, 26, 2, 202, 202, 31 Mar. 2008
日本基礎心理学会, Japanese

イベントベースの注意(日本基礎心理学会第26回大会,大会発表要旨)
有賀 敦紀, 河原 純一郎, 渡邊 克巳, 基礎心理学研究, 26, 2, 210, 210, 31 Mar. 2008
日本基礎心理学会, Japanese

妨害刺激が消失すると注意捕捉は増大する(日本基礎心理学会第26回大会,大会発表要旨)
犬飼 朋恵, 熊田 孝恒, 河原 純一郎, 基礎心理学研究, 26, 2, 210, 210, 31 Mar. 2008
日本基礎心理学会, Japanese

Maintenance of temporal attention in rapid serial visual presentation　　　　　　　　　　　　　　　
Ariga, A, Kawahara, J, Watanabe, K, Japanese Journal of Psychonomic Science, 27, 111, 112, 2008, [Peer-reviewed], [Invited]
English, Report scientific journal

Time perception is influenced by subjective area size of a brief stimulus.　　　　　　　　　　　　　　　
Ono, F, Kawahara, J, The Japanese Journal of Psychonomic Science, 25(2), 277-278., 25, 2, 277, 278, 2007

Reduction of false recognition through haptic presentation of objects
Nabeta, T., Kawahara, J.-I., European Journal of Cognitive Psychology, 18, 6, 801, 812, 01 Nov. 2006

主観的大きさによる時間知覚の伸縮(日本基礎心理学会第25回大会,大会発表要旨)
小野 史典, 河原 純一郎, 基礎心理学研究, 25, 1, 136, 136, 30 Sep. 2006
日本基礎心理学会, Japanese

際立つ違いは聴覚的虚再認を減らす(日本基礎心理学会第25回大会,大会発表要旨)
鍋田 智広, 河原 純一郎, 基礎心理学研究, 25, 1, 139, 139, 30 Sep. 2006
日本基礎心理学会, Japanese

(Abstracts of Presentation,The 24th Annual Meeting)
賀張 祐司, 河原 純一郎, The Japanese Journal of Psychonomic Science, 24, 2, 215, 215, 31 Mar. 2006
The Japanese Psychonomic Society, Japanese

(Abstracts of Presentation,The 24th Annual Meeting)
鍋田 智広, 濱田 治良, 河原 純一郎, The Japanese Journal of Psychonomic Science, 24, 2, 218, 218, 31 Mar. 2006
The Japanese Psychonomic Society, Japanese

(Abstracts of Presentation,The 24th Annual Meeting)
小野 史典, 河原 純一郎, The Japanese Journal of Psychonomic Science, 24, 2, 236, 236, 31 Mar. 2006
The Japanese Psychonomic Society, Japanese

The effect of subjective area size on time perception.　　　　　　　　　　　　　　　
Ono, F, Kawahara, J, The Japanese Journal of Psychonomic Science, 25(1), 119-120., 25, 1, 119, 120, 2006

非注意事態での空間処理 : 注意の瞬きと線運動錯視による検討(日本基礎心理学会第23回大会,大会発表要旨)
河原 純一郎, ゴラシ シャハブ, 基礎心理学研究, 23, 2, 224, 224, 31 Mar. 2005
日本基礎心理学会, Japanese

触覚および聴覚における虚再認とモダリティ一致効果(日本基礎心理学会第23回大会,大会発表要旨)
鍋田 智広, 河原 純一郎, 基礎心理学研究, 23, 2, 230, 230, 31 Mar. 2005
日本基礎心理学会, Japanese

注意を誘導する試行間関係の潜在記憶(日本基礎心理学会第23回大会,大会発表要旨)
小野 史典, 河原 純一郎, 基礎心理学研究, 23, 2, 241, 241, 31 Mar. 2005
日本基礎心理学会, Japanese

Does one's name attract visual attention?
Kawahara, J.-I., Yamada, Y., Visual Cognition, 11, 8, 997, 1017, 01 Nov. 2004

1P064 お弁当持った? : 触覚における虚偽記憶とモダリティ効果(2003年度 日本基礎心理学会第22回大会優秀発表賞)
鍋田 智広, 河原 純一郎, 基礎心理学研究, 23, 1, 97, 98, 30 Sep. 2004
A false memory is created by studying a list of items related to an item which is not presented. The present study examined whether a haptic study/test results in false recognition and, if so, whether a congruency of the presentation modality in the study and test reduces the false recognition. Following haptic or visual study of lists of objects participants completed a haptic or visual recognition test. We obtained a haptic false memory. Furthermore the amount of false recognition was reduced when the presentation modality was congruent with the study modality. Haptic study reduced false ..., 日本基礎心理学会

Brain activation during manipulation of the myoelectric prosthetic hand: a functional magnetic resonance imaging study
M Maruishi, Y Tanaka, H Muranaka, T Tsuji, Y Ozawa, S Imaizumi, M Miyatani, J Kawahara, NEUROIMAGE, 21, 4, 1604, 1611, Apr. 2004
English

時間知覚に与える潜在記憶と顕在記憶の影響(日本基礎心理学会第22回大会,大会発表要旨)
小野 史典, 河原 純一郎, 基礎心理学研究, 22, 2, 212, 212, 31 Mar. 2004
日本基礎心理学会, Japanese

お弁当持った? : 触覚における虚偽記憶とモダリティ効果(日本基礎心理学会第22回大会,大会発表要旨)
鍋田 智広, 河原 純一郎, 基礎心理学研究, 22, 2, 216, 216, 31 Mar. 2004
日本基礎心理学会, Japanese

Previous subthreshold exposures reduce perceived duration
Fuminori Ono, Fuminori Ono, Jun Ichiro Kawahara, Fumiko Matsuda, Cahiers de Psychologie Cognitive, 22, 27, 40, 01 Feb. 2004

Are the visually marked items encoded as a context?
Fuminori Ono, Tomohiro Nabeta, Jun-Ichiro Kawahara, Shinrigaku Kenkyu, 75, 3, 207, 212, 2004
Japanese Psychological Association, Japanese

Rehabilitation technique facilitates association cortices in hemiparetic patients: Functional MRI study
M. Maruishi, H. Muranaka, M. Miyatani, J. Kawahara, T. Tsuji, S. Noda, T. Kajima, Acta Neurochirurgica, Supplementum, 87, 75, 78, 01 Dec. 2003

Task-set is vulnerable to exogenous resetting during target identification
Kawahara, J.-I., Enns, J., Di Lollo, V., Journal of Vision, 3, 9, 01 Dec. 2003

Contextual cueing in 3D layouts defined by binocular disparity
Jun Ichiro Kawahara, Visual Cognition, 10, 837, 852, 01 Oct. 2003

1-B-22 The effect of previously subthreshold exposures on the perception of a period of time(Awarded Presentations at the 21st Annual Meeting)
ONO Fuminori, FUJIKI Daisuke, KAWAHARA Jun-ichiro, The Japanese Journal of Psychonomic Science, 22, 1, 29, 30, 30 Sep. 2003
The perceived duration of events is known to be affected by factors that are at least partly conscious. In the present study we report that the perceived duration of visual events can be affected even by an unconscious factor. The participants were briefly (12.5ms) exposed to nonsense syllables which were followed by backward pattern masking. A discrimination test for other participants confirmed that the stimuli were presented below a threshold level. The participants subsequently estimated the duration of the presentation of each of the nonsense syllables that either had, or had not, been previously exposed. The results indicated that the mean estimated duration of the stimuli that were previously exposed was less than that for the new stimuli. These results suggest that unconscious experience is one of determinants that can reduce the perceived duration of events., The Japanese Psychonomic Society, English

1-B-42 Visual spatial contexts transfer to haptic search(Awarded Presentations at the 21st Annual Meeting)
NABETA Tomohiro, ONO Fuminori, KAWAHARA Jun-ichiro, The Japanese Journal of Psychonomic Science, 22, 1, 35, 36, 30 Sep. 2003
Under incidental learning conditions spatial layouts can be acquired implicitly and facilitate visual search (contextual cueing effect). We examined whether the visual contextual cueing effect is specific to the modality or transfers to the haptic modality. The participants performed visual search trials based on a typical contextual cueing paradigm, followed by haptic search trials in which half of the trials had layouts used in the previous visual search trials. The visual contextual cueing effect was obtained in the learning phase. More importantly, the effect was transferred from visual to haptic search. This suggests a commonality of spatial memory to allocate focused attention in both visual and haptic modalities., The Japanese Psychonomic Society, English

Mere prsence of distractors: Another determining factor for the attentional blink
Kawahara, J.-I., Japanese Psychological Research, 45, 3, 140, 151, 01 Sep. 2003

The effect of observer's set on the processing of temporally distributed items
Jun Ichiro Kawahara, Japanese Psychological Research, 45, 109, 114, 01 May 2003

潜在記憶は時間知覚を短縮させる(発表要旨,日本基礎心理学会第21回大会)
小野 史典, 藤木 大介, 吉田 有美子, 河原 純一郎, 基礎心理学研究, 21, 2, 161, 161, 31 Mar. 2003
日本基礎心理学会, Japanese

視覚的文脈は触覚探索に転移するか?(発表要旨,日本基礎心理学会第21回大会)
鍋田 智広, 小野 史典, 河原 純一郎, 基礎心理学研究, 21, 2, 165, 165, 31 Mar. 2003
日本基礎心理学会, Japanese

因果関係の推論は記憶を歪める : 聴覚刺激を用いた再認バイアスの検討(発表要旨,日本基礎心理学会第21回大会)
中尾 敬, 武澤 友広, 國田 祥子, 河原 純一郎, 基礎心理学研究, 21, 2, 179, 180, 31 Mar. 2003
日本基礎心理学会, Japanese

注意の瞬き (特集:視覚的注意) -- (第二部 基礎研究編)
河原 純一郎, 心理学評論, 46, 3, 501, 526, 2003
心理学評論刊行会, Japanese

Contextual cueing effect in three-dimensional layouts
Kawahara, J.-I., Journal of Vision, 2, 7, 01 Dec. 2002

P-2B-19 Is depth implicitly encoded as visual context?
KAWAHARA Jun-ichiro, The Japanese Journal of Psychonomic Science, 21, 1, 59, 60, 30 Sep. 2002
The spatial layout of objects can be acquired implicitly and facilitate visual search under incidental learning conditions (the contextual cueing effect; Chun & Jiang, 1998). The present study investigated whether the learned layouts are limited to two-dimensional configurations or can encompass three dimensions. We found that the reaction times for the repetition condition increased significantly when the disparity of the repeated distractors was reversed in the end of the session. These results indicate that three-dimensional layouts can be preserved as implicit visual spatial contexts., The Japanese Psychonomic Society, English

潜在的な位置の記憶は奥行きを含むか?(発表要旨,日本動物心理学会第61回大会・日本基礎心理学会第20回大会合同大会)
河原 純一郎, 基礎心理学研究, 20, 2, 233, 233, 31 Mar. 2002
日本基礎心理学会, Japanese

Local facilitation of information processing in the attentional blink as indexed by the shooting line illusion
Kawahara, J., Journal of Vision, 1, 3, 01 Dec. 2001

Preattentive perception of multiple illusory line-motion: A formal model of parallel independent-detection in visual search
Jun Ichiro Kawahara, Kazuhiko Yokosawa, Journal of General Psychology, 128, 357, 383, 01 Oct. 2001

The preattentive emperor has no clothes: A dynamic redressing
Vincent Di Lollo, Vincent Di Lollo, Jun Ichiro Kawahara, Samantha M. Zuvic, Troy A W Visser, Journal of Experimental Psychology: General, 130, 479, 492, 01 Sep. 2001

Attentional Requirements in Visual Detection and Identification: Evidence from the Attentional Blink
Kawahara, J.-I., Di Lollo, V., Enns, J.T., Journal of Experimental Psychology: Human Perception and Performance, 27, 4, 969, 984, 01 Aug. 2001

課題切り替えが並列・逐次探索勾配に与える影響について(研究発表A,VII.第19回大会発表要旨)
河原 純一郎, Lollo Vincent Di, 基礎心理学研究, 19, 2, 128, 129, 31 Mar. 2001
日本基礎心理学会, Japanese

The effect of informative and uninformative cueing of attention on feature integration
Jun Ichiro Kawahara, Makoto Miyatani, Journal of General Psychology, 128, 57, 75, 01 Jan. 2001

Attentional switching mediates the attentional blink.
J Kawahara, Di Lollo, V, JT Enns, INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE, 41, 4, S421, S421, Mar. 2000
English, Summary international conference

Endogenous orienting elicits space-and object-based visual attention
Ngohayon Serafin L., Kawahara Jun-ichiro, 利島 保, Bulletin of the Graduate School of Education, Hiroshima University Part. 3 Education and human science, 49, 321, 328, 2000
広島大学大学院教育学研究科, English

The effect of meaning on visual image segmentation
Serafin L. Ngohayon, Jun Ichiro Kawahara, Tamotsu Toshima, Psychologia, 42, 170, 182, 01 Sep. 1999

Attentional blink: Separating what we see from when we see it.
J Kawahara, Di Lollo, V, JT Enns, INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE, 40, 4, S49, S49, Mar. 1999
English, Summary international conference

C-03 Distribution of visual attention on partially occluded objects : Evidence from spatial cuing task
KAWAHARA Jun'ichiro, SATO Takao, The Japanese Journal of Psychonomic Science, 17, 1, 47, 48, 30 Sep. 1998
To examine the characteristics of representation on which visual attention operates, we observed the cuing effects on a visual search of a target letter presented on partially occluded two-dimensional objects. Four rectangles were arranged in a woven tick-tack-toe grid. A cue was flashed at one end of a rectangle. Subjects judged the identity of the target letter presented on a rectangle. Reaction time was delayed when another object bisected the cued and the target location than when there was no occlusion between them. This indicated that visual attention does not operate solely on spatial or independent object-centered representation, but on a more elaborated one that is affected by occlusion., The Japanese Psychonomic Society, Japanese

遮蔽された物体上での視覚的注意の広がり : 空間的手がかり課題による検討(研究発表C,IV.第16回大会発表要旨)
河原 純一郎, 佐藤 隆夫, 基礎心理学研究, 16, 2, 119, 119, 31 Mar. 1998
日本基礎心理学会, Japanese

Role of attention in illusory line motion search
J. Kawahara, K. Yokosawa, Investigative Ophthalmology and Visual Science, 38, 01 Dec. 1997

Illusory line motion in visual search: Attentional facilitation or apparent motion?
Jun'ichiro Kawahara, Perception, 25, 901, 920, 01 Dec. 1996

探索課題の性質と空間選択的注意 : 周辺・自動的手がかり効果の検討(セッションB,VI.第15回大会発表要旨)
河原 純一郎, 宮谷 真人, 利島 保, 基礎心理学研究, 15, 1, 62, 62, 30 Sep. 1996
日本基礎心理学会, Japanese

注意補捉に及ぼす刺激駆動的要因の効果--静的刺激と動的刺激を含む視覚探索による検討
河原 純一郎, 心理学研究, 67, 1, 25, 32, Apr. 1996
日本心理学会

The effect of stimulus-driven factor on attentional capture: Evidence from visual search paradigm containing static and dynamic stimuli
Jun&apos, ichiro Kawahara, Shinrigaku Kenkyu, 67, 25, 32, 01 Apr. 1996

Overview for the neuropsychological assessment and cognitive rehabilitation to the cognitive disorders through the personal computer
Toshima Tamotsu, Yoshida Hiroshi, Shibasaki Mitsuyo, Kawahar Junichiro, Nagayama Rutsuko, Maedo Shino, Bulletin of the Faculty of Education, Hiroshima University. Part 1, Psychology division, 44, 1, 8, 10 Mar. 1996
Hiroshima University, Japanese

Stimulus-driven attentional capture: Evidence from visual search paradigm containing static and dynamic features
J Kawahara, H Hoshida, T Toshima, INTERNATIONAL JOURNAL OF PSYCHOLOGY, 31, 3-4, 1247, 1247, 1996
English, Summary international conference

Object-specific priming in apparent motion display
H. Yoshida, J. Kawahara, S. Maedo, T. Toshima, Shinrigaku kenkyu : The Japanese journal of psychology, 66, 354, 360, 01 Dec. 1995

探索課題の性質と空間選択的注意効果(A-1,VI.第14回大会発表要旨)
河原 純一郎, 宮谷 真人, 利島 保, 基礎心理学研究, 14, 1, 31, 31, 31 Aug. 1995
日本基礎心理学会, Japanese

The characteristics of attention in visual search:Exogenous and endogenous controls of attention
Kawahara Jun'ichiro, Bulletin of the Faculty of Education, Hiroshima University. Part 1, Psychology division, 43, 39, 48, 10 Mar. 1994
Hiroshima University, Japanese

The effect of stimulus motion on visual search
J. Kawahara, Shinrigaku kenkyu. The Japanese journal of psychology, 64, 5, 396, 400, 01 Dec. 1993
日本心理学会

人物で読む心理学事典 マイケル・ポズナー
長岡, 千賀, 横光, 健吾, 和田, 有史, 佐藤, 達哉, pp.339-344
朝倉書店, Feb. 2024, 9784254520361, x, 408p, Japanese, [Contributor]

臨床心理学スタンダードテキスト
岩壁, 茂, 遠藤, 利彦, 黒木, 俊秀, 中嶋, 義文, 中村, 知靖, 橋本, 和明, 増沢, 高, 村瀬, 嘉代子, 第4部－心理学研究法 3－研究倫理 pp.225-234.
金剛出版, Feb. 2023, 9784772419161, x, 1028p, Japanese, [Contributor]

コロナ時代の身体コミュニケーション
山口, 真美, 河野, 哲也, 床呂, 郁哉
勁草書房, Jul. 2022, 9784326299348, vi, 241, xviiip, Japanese

注意の生涯発達心理学 : 研究テーマ別
坂田, 陽子, 日比, 優子, 河西, 哲子, 3章，注意の容量 河原純一郎
ナカニシヤ出版, Mar. 2020, 9784779514524, ix, 198p, Japanese, [Contributor]

知覚・認知心理学
箱田, 裕司, 野島, 一彦, 繁桝, 算男, (河原純一郎6章), 6章，注意
遠見書房, Mar. 2020, 9784866160573, 186p, Japanese, [Contributor]

心理学実験
山口, 真美, 金沢, 創, 河原, 純一郎
遠見書房, Oct. 2019, 9784866160566, 234p, Japanese

美しさと魅力の心理　　　　　　　　　　　　　　　
三浦佳世, 河原純一郎
ミネルヴァ書房, Oct. 2019, 9784623086597, 216, Japanese, General book, [Editor]

強調表示と打消し表示に関する景品表示法上の考え方 : 調査報告書の概説と関連分野からの考察・評価
大元, 慎二, 糸田, 省吾, 河原, 純一郎, 土橋, 治子, 村, 千鶴子
商事法務, 2019, 9784785771416, vii, 232p, Japanese

基礎心理学実験法ハンドブック　　　　　　　　　　　　　　　
河原純一郎, 責任編集
朝倉書店, Jun. 2018, 9784254520231, [Contributor]

悩める人間―人文学の処方箋(北大文学研究科ライブラリ 15)　　　　　　　　　　　　　　　
河原純一郎, 思考抑制(8章)
北海道大学出版会, Jun. 2017, [Contributor]

注意　　　　　　　　　　　　　　　
河原純一郎, 横澤一彦
勁草書房, Nov. 2015, 9784326251087, Japanese, Scholarly book, [Single work]

エンサイクロペディア心理学研究方法論
Ray, William J., 岡田, 圭二, 中尾, 敬, 南, 学, 河原, 純一郎, 木村, 堅一, 水原, 幸夫, 下野, 正俊, 北崎, 充晃, 入戸野, 宏, 越智, 啓太, 岡林, 秀樹
北大路書房, 2013, 9784762828065, xviii, 381p, Japanese

心理学の実験倫理―「被験者」実験の現状と展望
河原 純一郎, 坂上 貴之
勁草書房, 09 Nov. 2010, 4326298960, 264, [Joint editor]

心理学研究法　　　　　　　　　　　　　　　
北海道大学
Oct. 2021 - Present

北大生のための心理学概論　　　　　　　　　　　　　　　
北海道大学
Apr. 2020 - Present

心理学概論　　　　　　　　　　　　　　　
北海道大学
Oct. 2017 - Feb. 2020

注意と認知の心理学　　　　　　　　　　　　　　　
東京大学

心理実験法　　　　　　　　　　　　　　　
広島大学，中京大学

心理学基礎実験演習　　　　　　　　　　　　　　　
広島大学，中京大学

認知心理学　　　　　　　　　　　　　　　
広島大学，北海道大学

顔認知のエキスパート化に顔学習環境が及ぼす影響の実験的検討
科学研究費助成事業
01 Apr. 2024 - 31 Mar. 2029
山口 真美, 河原 純一郎, 佐藤 弥, 宮崎 由樹, 小林 恵
日本学術振興会, 基盤研究(A), 中央大学, 24H00178

「ホスピタリティ」を感じさせる身体動作のパラメータ推定
科学研究費助成事業
01 Apr. 2023 - 31 Mar. 2027
大杉 尚之, 河原 純一郎
本研究ではお辞儀，頷き，首振り等の身体動作を行う場面状況を模擬することで，相手や状況ごとの適切なパラメータを推定する手法を開発する。今年度は，身体動作の適切さを左右するパラメータの特定（研究１）と身体動作が人物印象に及ぼす影響の検討（研究２）に関連する研究を中心に行った。具体的には，一般的には悪いお辞儀として知られている「顔が上がったお辞儀（実験1A）」，「顔と視線が上がったお辞儀（実験1B）」，「背中を丸めたお辞儀（実験1C）」，「首だけのお辞儀（実験1D）」の４種類を模擬した条件と通常のお辞儀条件を比較し，悪いお辞儀が人物の印象（魅力）に及ぼす影響を検討した。48体の中程度の魅力のCGモデルが良いお辞儀または悪いお辞儀動作をした後，そのモデルの魅力を評価する実験を行った。また，お辞儀動作の途中で停止をするかどうかも操作し，お辞儀をしない統制条件と比較した。その結果，「顔が上がったお辞儀（実験1A）」と「首だけのお辞儀（実験1D）」では，お辞儀による魅力上昇効果が生じたものの，通常のお辞儀に比べると効果量は小さかった。また，「背中を丸めたお辞儀（実験1C）」では，通常のお辞儀と変わらない頑健なお辞儀効果が生じた。さらに「顔と視線が上がったお辞儀（実験1B）」では，お辞儀により魅力が低下し，途中で停止をするお辞儀の方がより魅力低下が大きいという，通常とは逆の結果が得られた。これらの結果から，お辞儀中に視線が外れることが，動作による魅力上昇には必要であり，視線が外れていないことが相手に伝わるとネガティブな印象を形成する可能性が示された。
上記の研究に加え，お辞儀の文化差に関する研究に関する学会発表，お辞儀実験のウェブ実験に関する誌面発表，頷き動作が選択判断に与える影響に関する誌面発表を行った。
日本学術振興会, 基盤研究(C), 山形大学, 23K03014

Detecting the risk of smartphone addiction with the Implicit Association Test
Grants-in-Aid for Scientific Research
01 Apr. 2021 - 31 Mar. 2024
佐藤 広英, 河原 純一郎
本研究課題は，潜在連合テスト（Implicit Association Test；IAT）を用いてスマートフォン依存傾向の評価ができるかどうかを検証すると共に，スマートフォン依存リスクの高い者を検出するための客観的基準を検討することを目指すものである。
2021年度は，IATによるスマートフォン依存傾向の評価に関する1つの実験（研究1）を行った。先行研究のレビューの結果，IATによる依存傾向の評価にはいくつかの方法があることが確認されたが，その中から，依存対象に対する潜在的態度（Liking），依存対象と自己概念との連合（Identity）の測定に着目した。大学生48名を対象とし，2種類のIATを実施すると共に，スマートフォン依存に関する自己報告による顕在指標に回答を求めた。その結果，依存対象と自己概念との連合を測定するIdentity-IATの得点と，スマートフォン依存の顕在指標との間に有意な関連が確認された。以上の結果から，Identity-IATを用いることで，スマートフォン依存傾向の評価がある程度可能であることが示唆された。
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Shinshu University, 21K02961

知覚と注意のゆらぎのメカニズムを脳活動と自律神経系から統合的に理解する
科学研究費助成事業
01 Apr. 2020 - 31 Mar. 2024
近藤 洋史, 河原 純一郎, 木原 健, 江崎 貴裕
自閉スペクトラム症や統合失調症の特徴のひとつに感覚過敏がある。脳内での興奮と抑制作用の不均衡によって、このような症状を呈するという学説が提案されてきた。しかし、この説を支持する知見は未だ十分ではない。34名の健常者を対象として、彼らの自閉症傾向と統合失調型パーソナリティを特定するために質問紙調査を実施した。続いて、研究対象者の知覚特性を調べるために心理実験をおこなった。聴覚の錯覚現象である「単語変形効果」や「音脈分凝」を利用して、知覚交替の回数をその指標とした。さらに、脳機能計測手法であるMRスペクトロスコピー技術を用いて、脳内の興奮性および抑制性の神経伝達物質（グルタミン酸、ギャバ）の濃度を計測した。
１）知覚のゆらぎ： 研究対象者の自閉症傾向と統合失調型パーソナリティに正の相関が認められた。それぞれの傾向が高いほど、「単語変形効果」の知覚交替回数は減少することを見出した。ある聞こえ方に知覚が固定化される傾向によって、聴覚知覚の鋭敏さや物事に執着する性格特性が形成されるのかもしれない。
２）脳内の興奮・抑制バランス： 聴覚野でグルタミン酸／ギャバ比が大きくなるほど、自閉症傾向あるいは統合失調型パーソナリティの傾向は高くなった。一方で、前頭葉領域ではそのような相関関係は認められなかった。これらの結果は、上記の学説を支持するものであり、自閉症や統合失調症が生じるメカニズムを理解する一助となる。得られたデータに構造方程式モデリングを適用して、性格特性、知覚交替、および神経伝達物質の関係性を検証したところ、後二者の変数はやや独立して性格特性に影響していた。この点については今後さらなる検証の必要があろう。
３）アウトリーチ活動： 大学生や一般市民を対象としたオンライン講演会１件、プレスリリース１件、テレビ出演１件、取材協力３件などの活動をおこなった。
日本学術振興会, 基盤研究(B), 中京大学, 20H01789

過敏性腸症候群を不安モデル症例とした新しい注意バイアス修正法の開発
科学研究費助成事業
01 Apr. 2020 - 31 Mar. 2024
河原 純一郎, 田山 淳
注意は主要な認知機能の1つであり，情報選択の役割を担う。物理的に顕著な属性をもつもの(閃光など)や現在遂行中の課題に関連するものごと(会話相手の声など)以外にも，自らが価値をおく対象(金銭など)や心的状況に一致した対象(心配ごと)にも注意は向く。本研究は不安な状態に関わる場面やものごとに注意が向きやすくなる状態である注意バイアスについて調べた。過敏性腸症候群(irritable bowel syndrome, IBS)の傾向をもつ対象者に対して，胃腸症状に関連した語はネガティブ語に比べて注意が向きやすいかを検討した。IBS患者は胃腸症状に関連した語を多く想起することが知られている。Tkalcic et al. (2014)はストループ課題を用いて，ストループ促進効果を報告している。一方で，古典的には抑うつ者は抑うつ関連語の反応時間が却って遅延する(Gotlib & McCann, 1984)。ストループ課題の場合はどの段階での干渉・促進課が判然としないため，本研究は胃腸症状に関わる状況脅威語(旅行，トイレなど)への注意バイアスをドットプローブ課題を用いて測定した。Tkalcic et al. (2014)で使用された語を入手し，日本語訳したのちに測定を行った。本年度も対面授業が抑制されていたため，実験室に来室した参加者の中にIBS傾向にある者の参加がほとんど得られなかった。状態不安と消化器症状関連語への注意バイアスとの関連を測定したところ，状態不安の高い個人は,消化器症状関連語に普段から注意を向け警戒している可能性があることがわかった。
日本学術振興会, 基盤研究(B), 北海道大学, 20H01779

乳児の視覚的注意の発達から意識の形成過程を実験的に検討する　　　　　　　　　　　　　　　
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
01 Apr. 2019 - 31 Mar. 2023
山口 真美, 河原 純一郎
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Chuo University, 19H01774

Study on construction of eHealth system for self-care of IBS symptoms and the effect.
Grants-in-Aid for Scientific Research
07 Feb. 2019 - 31 Mar. 2023
田山 淳, 武岡 敦之, 井ノ上 憲司, 小川 豊太, 河原 純一郎, 一藤 裕
前年度までにIBSのセルマネジメントを行う目的で、既存のガイドブックの翻訳作業を実施した。その後、翻訳内容について、e-learningシステムに実装出来る形にするため、学習内容面の微修正（e-learningに即した内容に）を行うと共に、e-learningのプラットフォームの決定、ダウンロード方法の決定など、e-learningシステムの仕様についても検討をおこなった。細部検討後、e-learningサイトを実際に構築し、試験運用をおこなった。試験運用によって、コンテンツのフォントの大きさ、フォントと背景の色の設定、ナレーション設定等の点で微修正を行う必要が生じたので、微修正を行い、また、アクセスなどに問題が生じないことや、ユーザビリティの面でもユーザー視点で使用感を検討した。その後、本運用をスタートさせ、IBS有症状者については、20名をリクルートしデータ取得を行った。
当該年度において実施した研究の成果の具体的な内容としては、前年度に加えて18名分のデータを取得することができ、目標対象者数である40名に近づけることができた（あと2名で目標数に達成）。対象者に対するアセスメントとしては、セルフマネジメント前後の腸内細菌検査、QOL、食行動、消化器症状重症度、消化管と関連した不安感、精神的苦痛、EEGをそれぞれ評価した。なお、腸内細菌、EEG以外の評価指標については、随時データ入力を行っている。腸内細菌の解析については、外注をすることが決まっているが、実験のバッチ効果等に鑑みて検体が全て集まってから一斉に発送予定である。
Japan Society for the Promotion of Science, Fund for the Promotion of Joint International Research (Fostering Joint International Research (B)), 18KK0275

Positive and negative occlusion effects of sanitary mask
Grants-in-Aid for Scientific Research
01 Apr. 2020 - 31 Mar. 2022
河原 純一郎
顔はその人物が誰であるかという個人同定情報だけでなく，笑顔などの情動状態を伝えるはたらきをもつ。衛生マスクは顔の下半分を遮蔽するという点でコミュニケーションにとっては不利な効果をもつといわれていた。COVID-19流行によって衛生マスクの装着が強制される世界に一変した中で，本研究では，COVID-19流行前に測定した，衛生マスクつきの対人認知データと現在を比較し，対人認知が未曾有の社会的事象によって変容するようすを調べた。COVID-19 の流行前に，マスクの着用に関する信念を調査したところ，約半数の評定者はマスクの着用は不健康であるという印象を持っていた。この傾向は黒色マスクで特に強く見られ，不健康だという印象を持つ回答者が70％近くに達した。しかし，同じ調査をCOVID-19流行中の現在に実施したところ，不健康さとマスクの連想は弱まっており，1/3から1/4程度の者がマスク着用者に対する不健康さを感じているだけだった。一方，マスク装着顔の対人魅力については，2017年にわれわれが提案した2要因モデルを検証する好機となった。2要因モデルでは遮蔽とマスク装着による不健康さが魅力を引き下げていると捉えている。今回の調査ですでにマスク装着と不健康さの連合が失われていることが分かったため，マスク装着顔の魅力は遮蔽による効果だけになるはずである。66枚の顔画像に対して見た目の魅力を測定したところ，予測に一致して，もともとの魅力が高い者は魅力が下がり，低いものは上がるという効果が得られた。この結果は2要因モデルを支持しており，COVID-19の流行という社会的状況の変化によって，マスク装着顔の認知モデルが検証できたといえる。
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Hokkaido University, 20H04568

身体運動に起因する自己移動感・運動主体感と空間的注意分布　　　　　　　　　　　　　　　
Grants-in-Aid for Scientific Research Challenging Research (Exploratory)
28 Jun. 2019 - 31 Mar. 2021
佐藤 隆夫, 永井 聖剛, 金谷 英俊, 河原 純一郎, 温 文, 鳴海 拓志, 北崎 充晃
Japan Society for the Promotion of Science, Challenging Research (Exploratory), Ritsumeikan University, 19K21823

スマートフォンで潜在的なメンタルヘルスを評価するアプリケーションの開発　　　　　　　　　　　　　　　
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
01 Apr. 2018 - 31 Mar. 2021
佐藤 広英, 河原 純一郎
本研究課題は，日常のメンタルヘルスの評価方法として潜在連合テスト（Implicit Association Test；IAT）に着目し，スマートフォン上で潜在連合テストを実施するウェブアプリケーションを開発し，その測定の妥当性を検証することを目指すものである。平成30年度はスマートフォン上で潜在連合テストを実施するためのウェブアプリケーションの開発を行った。開発したウェブアプリケーションの仕様は，以下の通りである。（Ａ）画面中央に表示される刺激語を左右のいずれかに分類する課題であり，左右いずれかのエリアをタッチすることで課題を進める。刺激呈示からタッチまでの反応時間を測定する。画面は縦向きでも横向きでも実施可能である。（Ｂ）２つのメインブロックの平均反応時間，標準的なスコアリング法であるDスコアを自動で出力する，(Ｃ)カテゴリ名，刺激語（およびその数）を自由にカスタマイズ可能であり，メンタルヘルスだけでなくさまざまな潜在的測定法に利用可能である。（Ｄ）潜在連合テストと共に，ウェブアンケート（カスタマイズ可能）による自己報告測度も利用可能である。（Ｅ）個人のメンタルヘルス評価に利用することを想定し，IDとパスワードにより個人ごとのデータ管理が可能である。ただし，現状のウェブアプリケーションでは「画像刺激が利用できないこと」，「single-blocked IATが実施できないこと」，「自動出力される数値の検算ができていないこと」といった課題が残されている。
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Shinshu University, 18K03002

社会的立場と性ホルモンの交互作用による注意制御の適応的メカニズムの解明　　　　　　　　　　　　　　　
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
01 Apr. 2017 - 31 Mar. 2021
犬飼 朋恵, 河原 純一郎
本研究では，社会的な地位に対して選択的に働く視覚的注意に，性ホルモンが及ぼす影響を明らかにすることを目的としている。3年計画の2年目となる本年度は，実験参加者に対して実験的に割り当てられた社会的地位の高低と，その実験参加者の性ホルモンの分泌量バランスが認知課題の遂行成績に影響を与えるか否かについて検討した。このとき実験参加者はペアとして実験に参加して，2つの課題でそれぞれリーダーまたはフォロワーとしての役割が与えられた。また，課題を遂行する前に唾液を採取し社会的地位に対する関心度の高さに関わる，ソーシャルホルモンと呼ばれる男性ホルモンのテストステロンの分泌量を測定した。実験はテストステロンの高低（２）×割り当てられた社会的地位のパターン（４）として2要因被験者間計画として実施された。
実験参加者らには，ペアで協力して可能な限り早く正確に課題を行ない高得点を目指すようにあらかじめ教示された。認知課題としては心的回転課題とマウス反転課題を用いた。心的回転課題では，標準刺激としての三次元物体と，それらを回転させて他の角度から見た状態となる2つの物体と，2つの異なる物体が提示され，実験参加者は標準刺激と同じ物体を2つとも選ぶように求められた。マウス反転課題では，実際の動きと反転してディスプレイに呈示されるマウスの軌跡を見ながら指定された英数字を交互に辿ってそれぞれに対してクリックをするように求めた。いずれの課題でも制限時間内に回答された正答数を測定した。実験参加者に与えられた役割は，2つの課題ともにリーダーを任される場合とフォロワーを任される場合，いずれか1つの課題でリーダーを，もう一方の課題でフォロワーを任される場合があった。
本研究は多くの実験参加者を必要とするが十分な人数が集まっておらず，さらに多くの参加者を呼集する必要がある。
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Kobe Shinwa Women's University, 17K04511

Inverse investment effect of attention
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
01 Apr. 2017 - 31 Mar. 2020
Kawahara Jun-ichiro
The present study examined whether top-down cognitive control could modulate three sub-component of attention (i.e., orienting, interference control, and arousal). We implemented an attention-network test while requiring participants to invest their all might or half cognitive effort. Behavioral performance successfully reflected participants' intention in that orienting was delayed when participants invested only a half of their effort. However,region of interest analyses on the fMRI data revealed no activation at the predicted sights related to the spatial disengagement of attention. An alternative project that explored active suppression of a specific visual feature progressed successfully. We also extended a new line of research regarding the contrast of meta-cognition of visual search and concealment. The latter study identified five strategies including salience of target feature, temporal remoteness, approachability, recency, and randomness.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 17H02648

神経伝達物質の直接計測に基づく視覚的注意の脳機能モデル構築　　　　　　　　　　　　　　　
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
01 Apr. 2017 - 31 Mar. 2020
木原 健, 河原 純一郎, 近藤 洋史
本研究課題は、視覚的注意に着目し、その神経機序の解明を目的としている。特に、視覚的注意の時間的な制御は大脳前頭・頭頂領域が重要な役割を果たしていることが、担当者らの研究を始め多くの研究から示唆されている。しかし、それらの領域の神経活動の化学的基盤である神経伝達物質がどのような役割を果たしているのかについては、まだ研究は進んでいない。これに関して、担当者らは最近、前頭・頭頂領域において、特にGABA濃度が視覚的注意の時間的な切り替え制御に関係していることを報告した。そこで、この知見を発展させ、時間的側面を拡張させた包括的な視覚的注意の脳機能モデルの構築を目指し、研究を進めている。
1年目である昨年度は、研究目的を達成するための行動実験として、注意の切り替えが不要だが一定時間注意を維持しなければならないGo-NoGo課題の改良版である、gradual-onset continuous performance task（gradCPT)を検証し、研究目的に適していることを確認した。この結果に基づき、2年目である本年度は、gradCPTを用いて予備的な神経伝達物質測定実験を実施し、核磁気共鳴スペクトロスコピー（MRS）でgradCPT課題を利用した際に生じる問題点を洗い出した。また、持続的注意制御に関わる認知的・神経的処理機序の視覚的側面と聴覚的側面を比較検証するために、聴覚的なgradCPTを新たに構築して、データを収集、解析した。その結果、視聴覚課題間でほぼ類似した行動成績が得られることを確認した。さらに、視覚的gradCPTの計測に必要な課題時間を検証する実験を行った。その結果、通常の課題時間である8分間とそれを短縮した2分間では、課題成績は高い相関を示すことを明らかにした。加えて、奥行き知覚に関わる視覚的注意の新たな役割を明らかにし、研究への利用可能性を検討した。
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), National Institute of Advanced Industrial Science and Technology, 17K04494

Estimating attentional capture by faces and gaze
Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research
01 Apr. 2016 - 31 Mar. 2018
Kawahara Jun-ichiro
The present study examined whether human face and gaze distractors captured attention when the faces were entirely irrelevant to the task. Participants identified a target letter among non-target letters. In 20% of the trials, a face or a control image appeared. No distractor was presented in the remaining trials. Perceptual load was manipulated by varying the type of non-target letters. Although load theory predicts no or reduced attentional capture, the reaction times for target search were delayed in trials with a face distractor compared with those with a control image. This result suggests that attentional capture by an entirely task-irrelevant distractor occurred regardless of perceptual load. Moreover, face-specific attentional capture occurred even when the distractor did not share the temporal component of abrupt onset with the search array. These results extend the notion that faces are exceptions to load theory when faces and search items share no common display features.
Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Exploratory Research, Hokkaido University, 16K13503

Measuring psychological and physical stress state with the Implicit Association Test
Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)
01 Apr. 2015 - 31 Mar. 2018
Sato Hirotsune, KAWAHARA Jun-Ichiro
The purpose of this study was to extend the implicit stress measurement with the Implicit Association Test (IAT) to measurement of relaxation state and measurement of physical stress state. Results indicated that the IAT could detect the change of psychological stress state, such as acute stress and relaxation state, sensitively, but could not detect the change of physical stress state, such as fatigue state.
Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), Shinshu University, 15K17248

Allocation of attention during planning intentional behaviours
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
01 Apr. 2014 - 31 Mar. 2017
Jun-ichiro Kawahara
The present study examined whether observers are able to establish multiple
attentional sets to concurrently monitor two different spatial locations. Observers identified a target letter in red or cyan among nontarget letters of other heterogeneous colours during a temporal feature search. The results revealed that observers maintained multiple attentional sets for detecting two singletons or for targets involving two (or three) features. The second study demonstrates a relationship among inhibitory neural processes, front-parietal brain regions, and temporal aspects of attentional control ability.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), 中京大学, Principal investigator, Competitive research funding, 26285168

attractiveness judgements of multi-element groups
Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research
01 Apr. 2014 - 31 Mar. 2016
Kawahara Jun-ichiro, MIYAZAKI Yuki, KITAZAKI Michiteru
Extant studies have examined factors contributing to perception of attractiveness
of individual human faces. The present study examined whether observers could compare the group-wide attractiveness between two groups consisted of multiple members. Observers were briefly exposed with two frames of images each of which consisted of four faces and determined the one that they believed more attractive as a whole. The results indicated that discrimination accuracy was above chance level. Virtually identical pattern of the results was obtained when each group consisted of eight faces. Study 2 examined the effect of variance of members and found that larger variances decreased attractiveness when attractiveness of the members were low. Study 3 examined the effect of sanitary mask on attractiveness perception. We proposed a model that facial occlusion by a sanitary mask has a unique effect,
due to occlusion and unhealthiness priming.
Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Exploratory Research, 中京大学, Principal investigator, Competitive research funding, 26590183

Effect of active set on efficiency in implicit learning
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
01 Apr. 2013 - 31 Mar. 2016
ENDO Nobutaka, KAWAHARA Jun-ichiro
It is known that performance in a particular task is facilitated by repeated experiences. This facilitation effect is generally explained by implicit learning. The purpose of the study was to investigate the effect of participants’ set for the task on implicit learning. The results showed that the active set led to the higher learning efficiency, and the spontaneously formed set for the task requirements affected the aspect of implicit learning, suggesting the possibility that participants’ set contributes to the flexibility in implicit learning.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Kinki University, 25380990

the effect of sex hormone on the sex differences in attentional control
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
01 Apr. 2013 - 31 Mar. 2016
Inukai Tomoe, KAWAHARA JUN-ICHIRO
In this study, we investigated the effect of testosterone on sex differences in cognitive abilities. We assessed the second to fourth digit ratio (2D : 4D) of hands and collected saliva samples to analyze testosterone concentration. We used three types of cognitive tasks which males show a trend towards better performance than females; temporal search task, in which observers were required to identify a target embedded among nontargets, mental rotation task, and modified trail making test, in which observers were required to move a cursor with a trail onto targets during which the mouse was randomly inverted. We found a significant correlation between testosterone concentration from 2d : 4D ratio and the accuracy of the mental rotation task, while there were no correlations between testosterone concentration from saliva samples and performances on all three types of tasks. These results suggest that the effect of testosterone on sex differences is restricted to some cognitive tasks.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Kobe Shinwa Women's University, Coinvestigator not use grants, Competitive research funding, 25380993

Assessing acute stress with the Implicit Association Test
Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)
01 Apr. 2012 - 31 Mar. 2015
SATO Hirotsune, KAWAHARA Jun-ichiro
This study examined the hypothesis that it was possible to assess acute stress implicitly with the Implicit Association Test (IAT). For eliminating the order effects of the IAT, we developed a new protocol, Switching IAT, and showed it was possible to assess acute stress sufficiently with the Switching IAT.
Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), Shinshu University, 24730505

Individual differences in cognitive resources and acute stress
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
28 Apr. 2011 - 31 Mar. 2015
KAWAHARA Jun-ichiro
The present project examined whether attentional blink and attentional capture phenomena emerge from a common underlying attentional mechanism by using correlation studies. If these phenomena share a common foundation, the magnitude of these deficits should show within-subject correlations. Participants (N=135) revealed significant attentional deficits during spatial and temporal capture and the attentional blink tasks. However, no significant correlation was found among these tasks. Experiment 2 (N=95) replicated this finding using the same procedure used in Experiment 1 but included another attentional blink task that required spatial switching between the two targets. Strong correlations emerged only between the two attentional blink tasks (with/without spatial switching). The present results suggest that attentional deficits during spatial and temporal capture and the attentional blink tasks reflect different aspects of attention.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), 独立行政法人産業技術総合研究所->中京大学, Principal investigator, Competitive research funding, 23530970

顔および社会的情報が関わる場面での注意制御とそのメタ認知
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
01 Apr. 2011 - 31 Mar. 2013
河原 純一郎
本研究助成では，顔が関わる社会的場面での注意捕捉に関する研究と，顔の魅力の並列抽出に関する研究を実施した。
顔が関わる社会的場面での注意捕捉に関する研究では，従来は顔は人間の注意を引きつけやすく，特に意図的に顔を探索していなくても注意を捕捉してしまうと言われていた。しかし，これまでの研究を精査すると，ほとんど全ての研究で顔への構えと，目下の課題への構えが重複していた。例えば，Langton et al.(2008)は被験者に物体の探索をさせており，この中に顔画像も含まれていた。従って，純粋な顔による注意捕捉を調べるためには，知覚的構えが顔と主課題とで重複しない事態を設ける必要があった。本研究は高速逐次視覚呈示事態を用いて，顔による注意捕捉は自動的に起こると言うよりも，課題依存であることを示す知見を得た。魅力の並列抽出に関する実験では，2-5名で構成される集団の平均的魅力を同時抽出できるかを調べた。その結果，集団内の魅力のばらつきによる魅力の押し上げ・押し下げバイアスがあることがわかった。こうした結果は，集団の魅力抽出が可能であることを示唆していた。
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), 独立行政法人産業技術総合研究所, Principal investigator, Competitive research funding, 23119731

The effect of menstrual cycle on attentional control
Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research
2011 - 2012
INUKAI Tomoe, KAWAHARA Jun-ichiro
Target identification is impaired by a salient distractor. It has been suggested that this impairment is caused by the temporal or spatial deviation of attentional focus from a task-relevant location to the distractor (attentional capture). The present study examined the effect of menstrual cycle on attentional capture for women across different phases of their menstrual cycle (the MP, FP, and LP). We collected saliva samples from women subjects for each experimental session to analyze estradiol and progesterone concentrations in the FP, LP and MP. The results indicate that robust attentional capture occurred in temporal and spatial search tasks. Attentional capture was more profound for women than men only in the temporal search task. This suggests that women are more sensitive to a salient but task-irrelevant item than men when they are searching for a target embedded among a rapid stream of nontargets. Importantly, the magnitude of attentional capture was unaffected by the metrual cycle. Theses results suggest that sex differences in attentional capture in the temporal search task result from physiological differences rather than sex hormones.
Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Exploratory Research, 中京大学->神戸親和女子大学, Coinvestigator not use grants, Competitive research funding, 23653232

Improvement of cognitive performances by stimulus noise and adaptive mental set
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
2008 - 2010
KAWAHARA Jun-Ichiro
When two targets are embedded in a rapid serial visual presentation stream of distractors, perception of the second target is impaired when the inter-target lag is relatively short (less than 500 ms). Stimuli concurrently presented with the stream can affect this phenomenon, which is called attentional blink (AB). Previous studies have yielded conflicting results concerning the direction of the effect of added distractors on the AB: some studies report an increased AB, while others report a decreased AB. The present study explored the boundary conditions of the exaggeration/reduction effects of distractors on the AB and investigated underlying mechanisms by manipulating the spatial configuration, timing, and type of distractors. The results indicate that the magnitude of the AB deficit increased, regardless of the type of distractors, when spatial uncertainty of the target locations was involved. The reduction of the AB occurred at optimal presentation of distractors and disappeared when the second target was presented at a suprathreshold level. These results suggest that stochastic resonance or the centre-surround attentional mechanism may contribute to the reduction effect of distractors on the AB deficit.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), National Institute of Advanced Industrial Science and Technology, Principal investigator, Competitive research funding, 20530676

第3の注意駆動原理の提案:言語的加重による知覚システムの直接制御
Grants-in-Aid for Scientific Research Grant-in-Aid for Exploratory Research
2007 - 2008
熊田 孝恒, 河原 純一郎
本年度は、言語的な情報によって標的属性を被験者に与えた際に見られる、視覚的注意の配分の促進効果を、ターゲット検出の有効性、および、妨害項目の無視の効率の観点から、視覚的な探索課題を用いて検討した。また、非言語的な情報の関与を調べるために、手がかりが与えられた際のターゲット属性の切り替えコスト、および、直前の試行からのキャリーオーバー効果との関係を同時に調べた。その結果、言語情報を与えた試行の直後のみならず、その次の試行まで課題切り替えコストの減少が見られた。この結果は、言語情報がターゲットの検出に関わる注意の配分に有効であることが明らかになった。また、第2試行まで促進の効果が見られたということは、言語的な手がかりでは、完全な意の配分が不可能であることを示唆している。さらに、手がかりと直前の試行とのキャリーオーバー効果の関係を調べたところ、両者の間に交互作用が見られた。このことから、言語的な注意制御メカニズムと非言語的な言語制御メカニズムが共通であることを示していると考えられた。さらに、妨害項目の無視効率は、手がかりが与えられた後、試行が経過するとより低下した。このことから、言語的な注意メカニズムは、注意の配分の持続的な側面に関与していることを示唆した。次いで、この点を確認するために、構音抑制を課した実験を実施した。その結果、構音抑制を与えると、妨害刺激からの干渉効果が増加した。この結果からも、言語的な注意制御機構が、注意の持続に関与していることが明らかになった。これらの結果から、言語的注意制御機構が、非言語的な制御機構とは、一部、独立である可能性が示された。
Japan Society for the Promotion of Science, Grant-in-Aid for Exploratory Research, National Institute of Advanced Industrial Science and Technology, Coinvestigator not use grants, Competitive research funding, 19653084

意識的知覚のゲートウェイとしての心的構えの維持と非意図的制御に関する研究
Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)
2005 - 2007
河原 純一郎
本研究では,意識的知覚を支える主要認知機能の一つである心的構えとその制御方略を調べた。意識的知覚が損なわれる例として知られる注意の瞬き(attentional blink)現象は,これまでの研究では,時間的に先行して呈示される第1標的に注意資源が占有されるため,その後に呈示される第1標的の知覚が損なわれると考えられてきた。本研究では,3つの標的を連続して呈示し,第3標的の知覚成績が第2標的よりも高いことを示し,従来の説明では不十分であることを示した。加えて,こうした意識的知覚の欠如としての見落としは常に起こるわけではないことを示した。これまで,短い時間で2つの標的を検出するとき,2つめの標的は見落とされやすいことがわかっているが,観察者が知覚的構えを維持したまま2つの標的が時間的に連続して呈示される場合は見落としが激減する(見落とし回避)。研究発表11.3は,この現象を知覚的構えの指標として利用し,同時に2箇所の位置に注意の構えを向けることができることを示した。また,標的カテゴリが複数でも見落とし回避は同時に2箇所で起こりうることを示した。この結果は,注意分割を調べる手続きとして注意の瞬き減少が利用できることを示した点で新しい視点を提供したといえる。研究発表11.1では,標的の視覚探索事態において,注意を向ける位置についての意識的な構えがなくても,視空間的文脈を反復して経験することによって,探索が速くなる効果について調べた。従来の研究では視覚的な文脈の学習が起こることが知られていたが,本研究では聴覚刺激と標的位置の対連合を無意識的に学習できることを明らかにした。研究発表11.2では,刺激の呈示順序によって心的構えを操作し,心的構えが幾何学的錯視のひとつであるDelboeuf錯視の大きさに影響することを明らかにした。(739字)
Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), 広島大学->独立行政法人産業技術総合研究所, Principal investigator, Competitive research funding, 17730433

統語的プライミングを手がかりとした再帰的計算能力を支える皮質構造の解明
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Priority Areas
2005 - 2005
酒井 弘, 玉岡 賀津雄, 河原 純一郎
繰り返し適用可能な統語的操作によって新たな文構造を無限に処理・産出する再帰的計算能力は、人間に固有な言語能力の中核として、言語機能の理論的モデル構築を日指す言語学者にとっても、機能を支える皮質構造の解明を目指す脳科学者にとっても、極めて興味深い研究対象である。この研究では、統語的プライミング現象を手がかりに統語処理の過程を純粋に抽出し、fMRIを使用した脳機能イメージング実験を実施することで、再帰的計算能力を支える皮質構造を特定しその機能を解明することを目指している。言語処理の脳機能イメージング実験の手法を確立するとともに、統語的プライミングの心理言語学的実験における実験パラダイムを整備するために、まず音声呈示された日本語の複合語を処理する際の脳機能イメージングを計測する実験を実施した。続いて統語的プライミングの行動レベルでの影響を探るための心理言語学的実験を実施した.イメージング実験では、両半球側頭葉上側頭回の聴覚連合野に加えて、複合語を処理する際には左脳上側頭回前方と島回に強い活動が観察され、側頭葉上側頭回〜島回〜前頭葉下前頭回に、音声言語を処理するためのネットワークが存在する可能性が示された。行動実験では、日本語の語順を操作して文理解における統語的プライミング効果を測定する実験を実施したところ、英語と同様にプライム文とターゲット文の動詞が一致している際に、語順のプライム効果が最大となると言う結果が得られた。動詞が目的語などに後続する日本語でも、動詞が先行する英語と同じ結果が得られることが確認されたのは初めてである。言語の認知神経科学研究における研究情報を交換するためにMax-Planck Institute for Human Cognition and Brain Science(Leipzig, Germany)及びUniversity of Marburg(Marburg, Germany)から研究者を招聘して、国際ワークショップを開催した。
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research on Priority Areas, Hiroshima University, Coinvestigator not use grants, Competitive research funding, 17022030

Neupsycological study for the development of cognitive and emotional qualia in infants.
Grants-in-Aid for Scientific Research(基盤研究(A))
2002 - 2005
Tamotsu TOSHIMA, 河原 純一郎, 宮谷 真人, 松橋 有子, 松田 文子, 小林 正夫, 橋本 優花里, 近藤 武夫
This study was conducted to examine the development of cognitive and emotional qualia in infants by means of the new brain imaging technique. Our study for the infant's brain imaging showed that the orbitofrontal area in infants has equipped the sensitive function, which is related to cognitive and emotional qualia as same as that of adults.(1) In 2002, we confirmed the applicability of Near-Infrared Spectroscopy (NIRS) and thermography to the brain imaging study for cognitive and emotional responses in infants, and showed that the cognitive and emotional qualia in infants could be measured as the psycho-physiological responses derived by multimodal stimuli, such as mother's face, utterance and touch. For cognitive and emotional qualia in patients with brain damage, the higher executive processing functions of patients were examined by means of the discrimination shift learning. It was showed that the dysfunction for processing elements of stimuli was due to the lesion in frontal area.(2) In 2003, the brain activity during processing the visual three dimensional objects was examine by using NIRS. We showed that there are the individual differences of the hemispheric activation, and that the activations in the anterior-parietal area and the fusiform gyrus along changed with viewpoint of perticipants in large task-demand situation. According to this study, the activation on the occipital area in infants was examined under the mother-infant interaction. It was showed that the left hemisphere on the occipital area activated under any personal interactions while the right hemisphere activated only under the infant- unfamiliar person interaction.(3) In 2004, effects of olfactory stimuli, such as braest and articilial milk, on the activation on orbitofrontal area in neonates was examined. We found that the smell of brest milk can mostly activate the frontal area in neonates, and that this was irrespective of feeding conditions. The case study for one infants, who was neglected by parent, showed that his development pf cognitive and emotional qualia could be improved through the intimate personal contact in the nursing home.(4) In 2005, the cognitive and emotional qualia for the facial expression as well as the prosodic features of infant-directed-speech were examined through the brain functional imaging in neonates by NIRS. The longitudinal study for the neonate's brain imaging on the facial expression showed that the cognitive and emotional qualia in infants develop on the frontal brain area by stages. The prosodic feature of mother's utterance could affect the activation on the frontal area in neonates in terms of their qualia development.
Ministry of Education, Culture, Sports, Science and Technology, 基盤研究(A), 広島大学, Coinvestigator not use grants, Competitive research funding, 14201012

複数同時作業事態における知覚的構えと見落としエラーに関する研究
科学研究費補助金(若手研究(B))
2002 - 2004
河原 純一郎
本研究の目的は,短時間のうちに連続して2つの課題を行うとき,2つ目の課題がうまく遂行できず,見落としたりするというヒューマンエラーの原因を探ることであった.具体的には,(1)1つ目の課題を行っているときに注意はどこに向けられているか,(2)2つの課題の成績に影響する環境変数(妨害刺激の有無,(3)2つの課題を行うときの空間的特性,(4)課題を行うときの心的構えの影響という4つの観点で目的を設定した.これらの4つの観点に対応した実験は全て終了し,次のような成果が得られた.1.高速逐次視覚呈示法を利用し,短時間内で連続して2つの作業を行うときの認知負荷の評価方法を開発した.とくに,標的間の空間的位置関係は大きな作業負荷となることを見いだした.昨年度の成果である,平均作業成績を被験者間で統制して比較可能な動的ノイズ操作法を利用して,上述の(2),(3)を調べるための実験を行った.短時間内に連続して2つの作業を行う場合,同じ位置で行う場合のほうが,位置を移動させる場合に比べて,作業者にとって負荷が少ないことが分かった.このJapanese Psychological Research誌に発表した.2.連続して2つの課題を行うとき,注意は少なくとも300-400ms程度,第1標的が呈示された場所にとどまっていることが分かった.これは,線運動錯視という錯覚を用いることで明らかになった.この成果はPsychological Research誌に発表した.3.標的に対するマスキング特性を検討した実験では,従来報告されていた注意の瞬き現象は,第1標的の困難度による成分と,課題切り替えによる成分があることが分かった.従来の研究では,これらの2つの成分に加え,視覚マスキングの効果が混同されており,本研究によって初めてマスキングの成分を除いた課題切り替え成分による見落とし効果が明らかになった.この成果はPerceptoin ＆ Psychophysics誌に発表した.この研究では,見落としに及ぼす学習の効果を検討するための実験をさらに行っており,過学習された視覚パターンは見落としを起こしにくくする性質があることがわかった.
文部科学省, 若手研究(B), 広島大学, Principal investigator, Competitive research funding, 14710045

Cognitive Processing of Verb Morphology and Its Implications for Organization of Language Faculty
Grants-in-Aid for Scientific Research(基盤研究(C))
2002 - 2004
Hiromu SAKAI, 河原 純一郎, 牧岡 省吾, 小泉 政利, 玉岡 賀津雄
To investigate into the neurocognitive basis for the processing of verb morphology, we conducted (1)psycholinguistic, (2)neuroscientific, (3)quantitative linguistic, (4)theoretical linguistic, (5)connectionist modeling researches. A behavioral psycholinguistic experiment was conducted using a cross-modal priming paradigm. The results indicated that derived words with regular morphological relationship (verbs with a potential suffix) showed stronger priming effects compared to semantically related words with irregular morphological relationship (transitive/intransitive verbs). A neuroimaging study was conducted using fMRI as a joint research with Hiroshima Prefectural Rehabilitation Center. So-called Broca region in the inferior frontal gylus and temporal pole were activated when Japanese native speakers processed sentences with complex verb morphology. Event-related potential response was measured by electro-encepharography while Japanese native speakers were processing verb conjugation patterns. An ERP component called P600, a component associated with syntactic violations, was observed in expressions with morphological violation. A corpus study was conducted as to the distinction between so-called ‘syntactic compound verbs' and ‘lexical compound verbs'. The results of quantitative research supported the dichotomy of syntactic vs. lexical compound verbs assumed in theoretical linguistics. Theoretical linguistic studies on Japanese complex predicates, a connectionist modeling of acquisition of verb forms were conducted. International seminars were organized every year with leading researchers in the field of cognitive neuroscience of language, including Dr.Colin Phillips (University of Maryland, USA,2002), Dr.Liina Pylkkanen (New York University, USA,2003), and Dr.Matt Davis (Medical Research Council, UK,2004).
Ministry of Education, Culture, Sports, Science and Technology, 基盤研究(C), 広島大学, Coinvestigator not use grants, Competitive research funding, 14510623

Effects of cognitive and emotional stress on working memory
Grants-in-Aid for Scientific Research(基盤研究(B))
2002 - 2004
Makoto MIYATANI, 河原 純一郎, 中條 和光, 深田 博己, 中尾 三月, 島津 明人, 橋本 芳世子
Effects of cognitive stress (time pressure, concurrent tasks, cognitive conflict) and emotional stress (anxiety) on working memory were examined. Time pressure in discrimination tasks accelerated the stimulus evaluation process measured by P300 latency and response preparation process estimated by LRP latency, depending on task requirements. Cognitive conflict in a flanker task affected the response times. The response times in congruent trials became longer as the amount of conflict in the preceding incongruent trial increased. This suggested the cognitive control mechanism of response inhibition, a part of which was supported by central executive function. The working memory in sentence comprehension was affected by time pressure, concurrent tasks, and state anxiety. Time pressure interfered with the construction of text-based model of the legend. The random generation as a secondary task delayed the sentence verification time and attenuated the semantic priming effect reflected in N400 amplitude, suggesting the disturbance of context formation in a central executive. The secondary tasks affecting the phonological loop did not raise these disturbing effects. The relation between capacity of working memory and reading strategy was dependent on emotional states. Compensatory strategies such as a reading regression were more frequent for low-span than for high-span readers. However, anxiety evoked by negative feedback of the reading performance increase the use of this compensatory strategy of high-span readers, probably in order to reduce the load in working memory coping with a consumption of working memory resource caused by anxiety. The anxiety also affected self referent processing. In an incidental learning task, participants with less anxiety showed the self-reference effect. However, increased anxiety diminished this memory phenomenon. Besides, cognitive and affective factors in social communication and stress coping behavior were investigated.
Ministry of Education, Culture, Sports, Science and Technology, 基盤研究(B), 広島大学, Coinvestigator not use grants, Competitive research funding, 14310042

Temporal dynamics of knowledge acquisition and its modelling
Grants-in-Aid for Scientific Research(基盤研究(B))
2001 - 2003
Fumiko MATSUDA, 利島 保, 河原 純一郎, 中條 和光, 宮谷 真人, 湯澤 正通, 中尾 美月
[Modelling of knowledge acquisition] In this project Matsuda conducted longitudinal and cross-sectional survey and revealed the process of human knowledge acquisition and its mechanism in terms of development of knowledge on time, distance, speed relationships. Matsuda also conducted experimental works to compare the acquisition processes of temporal and spatial knowledge. Another experiments compared the processes of development in knowledge acquisition of relationships between time, distance and speed in school children.[Knowledge acquisition and meta-cognition ] Yuzawa observed the process of changes in meta-cognition and strategies in pre-school children. This study dealt with physical and social environment that enhances acquisition of knowledge on scientific, and mathematical concepts. In one of the studies, for example, Yuzawa observed pre-school children who compared diagrams in terms of their sizes. The results showed that the proportion of children who chose appropriate strategies and performed correct comparison as the age increases. Yuzawa's project showed dynamic relationships between physical environment, meta-cognition, and knowledge acquisition.[Reading and working memory] Chujo and Nakao examined the effect of working memory capacity on reading by using eye movement recording. The investigators measured working memory capacity by reading span test and tested if it correlates with the patterns in eye movement while reading. The results showed that the readers who have small working capacity frequently produced saccadic eye movements that stay only brief moment as reading proceeds, suggesting importance of working memory on knowledge acquisition.[Attentional distribution and implicit learning] Miyatani and Kawahara explored human ability to acquire layouts of items distributed spatially and for temporally by using contextual cueing paradigm. The results revealed that the participants could obtain those spatio-temporal contexts and utilise them for cognitive operations such as visual search.
Ministry of Education, Culture, Sports, Science and Technology, 基盤研究(B), 広島大学, Coinvestigator not use grants, Competitive research funding, 13410037

連続2作業実行時の情報処理コストに関する研究
科学研究費補助金(奨励研究(A))
2000 - 2001
河原 純一郎
本研究では,短時間のうちに2つの課題を行うとき,2つ目の課題が見落とされたり,うまく遂行できないというヒューマンエラーの原因を探るため,a)2標的間の空間的関係(標的位置の同異),b)2課題の性質(同じ課題か,異なる課題か),c)切り替え負荷の時間的特性,d)標的後に呈示される物体のマスキング特性,e)標的位置での局所的情報処理促進の有無という5つの観点で目的を設定した.これらの5つの観点に対応した実験は全て終了し,次のような成果が得られた.1.短時間内で連続2作業を行うときの認知負荷の評価方法として,高速逐次視覚呈示法を利用した実験から,標的間の空間的位置関係は大きな作業負荷となることが見いだされた.本研究では,平均作業成績を被験者間で統制して比較可能な動的ノイズ操作法を初めて開発した.これらの成果はJournal of Experimental Psychology : Human Perception ＆ Performance誌に発表した.2.処理負荷を起こす2課題の性質は,両者の物理的特徴が異なっていることが決定的な成分となっていることがわかった.これは,視覚的特徴と反応(認知操作)を分離した実験で明らかになった.3.切り替えの時間的特性を検討した実験では,2つの課題がきわめて短時間内(〜300ms)に呈示されることが大きな処理負荷を生じることが分かった.実際に反応する順序は問題ではないことも見いだされた.これら2および3の点はJournal of Experimental Psychology : General誌に発表した.4.標的に対するマスキング特性を検討した実験では,従来報告されていた注意の瞬き現象は,第1標的の困難度による成分と,課題切り替えによる成分があることが分かった.従来の研究では,これらの2つの成分に加え,視覚マスキングの効果が混同されており,本研究によって初めてマスキングの成分を除いた課題切り替え成分による見落とし効果が明らかになった.この成果はPerceptoin ＆ Psychophysics誌に掲載予定である.5.標的位置での局所的促進の有無を調べた実験では,連続2作業を実施する場合に標的位置に焦点化される注意は,局所的な処理の促進を引き起こすことが示された.これはPsychological Research誌に掲載予定である.
文部科学省, 奨励研究(A), 広島大学, Principal investigator, Competitive research funding, 12710041

Unified Experimental Environment and Simulation Models of High-level Vision
Grants-in-Aid for Scientific Research(基盤研究(B))
2000 - 2001
Kazuhiko YOKOSAWA, 河原 純一郎, 齋木 潤, 熊田 孝恒
We constructed the psychological database of high-level vision research. The database contained not only the demonstration of the visual phenomena or visual stimuli, but also an environment which users can experience psychological experiment. The experiment software was built by Java language. We also made some simulation models of high-level vision : a model of illusory line motion search (Kawahara ＆ Yokosawa, 2001), a visual selection model by LOC analysis (Kumada ＆ Humphreys, in press), a pulsed neural network model of visual attention (Saiki, 2002), ＆ T2 decay model of attentional blink (Kawahara, in press).
Ministry of Education, Culture, Sports, Science and Technology, 基盤研究(B), 東京大学, Coinvestigator not use grants, Competitive research funding, 12551001

情報処理装置及びそのプログラム　　　　　　　　　　　　　　　
Patent right, 河原純一郎, 薮崎智穂, 小林恵子, 今井史
特願2018-86366, 27 Apr. 2018

疲労判定装置、疲労判定方法、及びそのプログラム
Patent right, 河原 純一郎, 佐藤 稔久, 国立研究開発法人産業技術総合研究所
特願2012-278580, 20 Dec. 2012
特開2014-121410, 03 Jul. 2014
特許第6090653号
17 Feb. 2017
201703010131215820

疲労判定装置、疲労判定方法、及びそのプログラム
Patent right, 河原 純一郎, 佐藤 稔久, 独立行政法人産業技術総合研究所
特願2012-278580, 20 Dec. 2012
特開2014-121410, 03 Jul. 2014
201403040992262351