Researcher basic information

• 博士（教育学）, 北海道大学, 2002
• 修士, 北海道大学

• https://researchmap.jp/read0165876?lang=en

• https://jglobal.jst.go.jp/detail?JGLOBAL_ID=200901031600714245
• https://vpcplab.jimdofree.com/

• 200901031600714245

• Three-dimensional space
• Visual attention
• Perceptual organization
• Implicit processing
• Event-related potential
• EEG
• Socio-emotionality
• Neurodiversity

• Humanities & Social Sciences, Cognitive science
• Humanities & Social Sciences, Experimental psychology
• Humanities & Social Sciences, Educational psychology

• Bachelor's degree program, School of Education
• Master's degree program, Graduate School of Education
• Doctoral (PhD) degree program, Graduate School of Education

Research activity information

• 2026, 日本心理学会, 優秀発表賞
  喜び表情顔の選択的計数における共感的関心の影響
  小林 慧,河西 哲子
• 2023, Society for Psychophysiological Research, Travel award
  Monitoring multiple-others' facial expressions and its relation with trait empathy
  Kei Kobayashi (co-presenter Tetsuko Kasai)
• 2022, 北海道心理学会, 研究奨励賞
  傾き対比錯視と自閉スペクトラム症傾向の関連 －刺激持続時間に着目した検討－
  小林慧 (連名発表者 金子沙永, 河西哲子)
• 2021, 日本生理心理学会, 優秀論文賞
  文字列特異的なERPの左側性化への物体にもとづく注意の役割.
  宇野智己;片倉崇吏;河西哲子
• 2015, Asia-Pacific Conference on Vision, Travel award
  Psychological "Instant" and "Continuance": An event-related potential study of duration selective attention
  Ayaka Urushihara (co-presenter Tetsuko Kasai)
• 2014, 北海道心理学会, 研究奨励賞
  線画刺激と塗り刺激における選択的注意 －フランカー課題を用いた検討－
  鈴木沙季, 竹谷隆司, 奥村安寿子 (連名発表者 河西哲子)
• 2001, 北海道心理学会, 研究奨励賞
  ３次元空間における空間的注意過程のERPによる検討
  河西哲子;諸冨 隆, Japan

• Social Motivation Modulates Early Visual Processing for a Few Others’ Emotions
  Kobayashi, K.; Kasai, T.
  International Journal of Psychophysiology, 223, 113361, 2026, [Peer-reviewed], [Last author]
  English, Scientific journal
• The Developmental Change of Print‐Tuned N170 in Highly Transparent Writing Systems
  Tomoki Uno; Tetsuko Kasai; Ayumi Seki
  Japanese Psychological Research, Wiley, 2024, [Peer-reviewed]
  English, Scientific journal
• 文字列の視覚的均衡への美的印象には文字の音韻情報が関わる
  関貴生; 河西哲子
  電子情報通信学会技術研究報告, 2022-81, 35, 40, Feb. 2023, [Corresponding author]
  Japanese, Scientific journal
• 他者の事前知識が視線手がかりによる信頼感に及ぼす影響
  小石川奈生; 小林慧; 河西哲子
  電子情報通信学会技術研究報告, 2022-81, 30, 34, Feb. 2023, [Last author]
  Japanese, Scientific journal
• Effects of facial expressions in selective enumeration tasks: A study focusing on sad expressions
  Kei KOBAYASHI; Tetsuko KASAI
  The Japanese Journal of Cognitive Psychology, 20, 1, 1, 7, The Japanese Society for Cognitive Psychology, 31 Aug. 2022, [Peer-reviewed], [Last author]
  Japanese, Scientific journal
• Behavioral and electrophysiological investigations of effects of temporal regularity on illusory-figure processing
  Tetsuko Kasai; Keiichi Kitajo; Shiika Makinae
  Brain Research, 1766, 147521, 147521, Elsevier BV, Sep. 2021, [Peer-reviewed], [Lead author], [International Magazine]
  English, Scientific journal, The allocation of limited processing resources at an appropriate timing should be critical for selecting incoming signals. On the other hand, perceptual organization, which relatively automatically integrates fragmentary elements into coherent objects, should also be critical to decrease the processing load. By indexing behavioral measures and event-related potentials (ERPs), this study examined the effects of temporal regularity, which makes it possible to predict the time at which stimuli occur, on task-unrelated early processing of perceptual organization. Twenty-six volunteers participated in a task to discriminate central targets that were simultaneously but infrequently presented inside a Kanizsa-type illusory figure (KF) or a control stimulus (CS) without perception of an illusory figure. Inter-stimulus intervals were fixed or varied in different blocks. Both temporal regularity and the illusory figure accelerated behavioral responses and enlarged negative ERP amplitudes at 120-160 ms and 280-320 ms post-stimulus over posterior electrode sites. However, importantly, there was no evidence indicating that temporal regularity modulates illusory-figure processing. The finding may suggest that temporal expectation operates in parallel with implicit perceptual organization, although further examinations that involve spatial attention or individual differences are required., 11381639;14038342
• Effects of irrelevant object structure on early attention deployment
  Tetsuko Kasai
  Consciousness and Cognition, 92, 103141, 103141, Elsevier BV, Jul. 2021, [Peer-reviewed], [Lead author]
  English, Scientific journal, 11381639
• Role of object-based attention in left-lateralization of print-specific ERP
  Tomoki UNO; Takashi KATAKURA; Tetsuko KASAI
  Japanese Journal of Physiological Psychology and Psychophysiology, 38, 3, 139, 148, Japanese Society for Physiological Psychology and Psychophysiology, Oct. 2020, [Peer-reviewed], [Last author]
  Japanese, Scientific journal,

  Implicit and rapid conversion of letters into sounds by skilled readers might be reflected in the left lateralization of print-tuned N170 event-related potential. A recent study suggests that the leftward asymmetry of the N170 depends on the attentional selection of letters as perceptual objects (Okumura et al., 2015, Neuropsychologia).The present study tested this possibility by using an experimental paradigm of object-based attention. Stimuli were letters (words, nonwords) or symbol strings that spatially overlapped with random-dot fields. Participants were asked to discriminate the color of either the letter/symbol strings or the dots. Left-lateralized negativity for print was elicited at 200–300 ms post-stimulus only when participants attended to the strings. However, this effect occurred later than the typical N170 latency, which might reflect the time required to resolve competition between overlapping stimuli or perceptual completion of letters. The current study is the first to demonstrate that the leftward asymmetry of print-specific ERP requires selective attention to letter strings.

• Focused attention meditation training modifies neural activity and attention: longitudinal EEG data in non-meditators.
  Kazuki Yoshida, Kenta Takeda, Tetsuko Kasai, Shiika Makinae, Yui Murakami, Ai Hasegawa, Shinya Sakai
  Social Cognitive and Affective Neuroscience, 15, 215, 224, May 2020, [Peer-reviewed]
  English, Scientific journal
• Electrophysiological correlates associated with the involuntary processing of single letters in the Japanese Hiragana script.
  Uno, T., Kasai, T., Seki, A.
  Japanese Journal of Psychological Physiology and Psychophysiology, 37, 3, 157, 165, Japanese Society for Physiological Psychology and Psychophysiology, Mar. 2019, [Peer-reviewed]
  English, Scientific journal,

  Early processing of print stimuli is reflected by the left-lateralized N170 of event-related potentials (ERPs). However, most previous ERP studies have focused on letter strings, and only a few have investigated single letters in opaque alphabetic writing systems, despite the fact that they are the front-end of visual word recognition and reading development. We examined ERPs for single letters of the highly transparent Japanese Hiragana script, which demonstrated a direct correspondence between graphemes and phonemes. We presented single Hiragana letters along with control stimuli (alphanumeric symbols in Experiment 1; unfamiliar foreign letters in Experiment 2) in rapid succession. The participants were asked to judge the stimulus colors and linguistic properties of letters that were task-irrelevant. In both experiments, Hiragana letters elicited more negative enhancement than control stimuli in the left hemisphere only, which showed a different pattern from the bilateral enhancement associated with single alphabetic letters. These results suggest that the implicit sound activation of Hiragana is automatic, which extends the "phonological mapping hypothesis" on the left-lateralization of N170 onto single letters.

• Body analogy and sex differences in mental rotation
  Shiika Makinae; Tetsuko Kasai
  Shinrigaku Kenkyu, 88, 5, 452, 459, Japanese Psychological Association, 30 Sep. 2017, [Peer-reviewed], [Last author]
  Japanese, Scientific journal
• Effects of embodied cues on mental-rotation performance in children
  蒔苗 詩歌; 河西 哲子
  電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 117, 145, 29, 31, 電子情報通信学会, 21 Jul. 2017
  Japanese, Symposium
• Attention properties in autism-spectrum disorders.
  Kasai, T
  Clinical Neuroscience, 35, 1001, 1004, Jun. 2017, [Invited], [Lead author]
  Japanese, Scientific journal
• Print-specific N170 involves multiple subcomponents for Japanese Hiragana
  Tomoki Uno; Yasuko Okumura; Tetsuko Kasai
  NEUROSCIENCE LETTERS, 650, 77, 81, May 2017, [Peer-reviewed], [Last author]
  English, Scientific journal
• 脳波があらわす心の過程
  河西 哲子
  心理学ワールド, 75, 5, 8, Aug. 2016, [Invited], [Lead author]
  Japanese, Research society
• Representational levels of bilateral N170 for Japanese Hiragana strings during focal spatial attention to letters.
  Okumura, Y; Kasai, T; Murohashi, H
  Japanese Journal of Physiological Psychology and Psychophysiology, 33, 1, 5, 17, Japanese Society for Physiological Psychology and Psychophysiology, Aug. 2016, [Peer-reviewed], [Invited]
  English, Scientific journal,

  Fluent reading requires the rapid integration of letters into a unified letter-string percept. Previous studies have shown that this process is related to specific enhancement of the left-lateralized event-related potential (ERP) called N170. However, our previous studies found bilateral N170, rather than left-lateralized N170, enhancement for rapidly-presented Japanese Hiragana strings that were either unattended or had wide interletter spacing (Okumura et al., 2014, 2015). To explore the possibility that bilateral N170 reflects the processing of separate letters, the present study examined lateralized ERP attention effects for widely-spaced Hiragana words, nonwords, and alphanumeric symbol strings. Twelve participants were required to attend to the left or right end of strings, and to respond to a target letter/symbol at the attended location. We found bilateral N170 enhancement for Hiragana strings (130–210 ms poststimulus), while a spatial attention effect was seen in the 160—210 ms interval regardless of Hiragana or symbol strings. These results suggest that N170 specialization involves processing of letter strings at the level of separate constituent-letters when they are widely spaced or when attention does not cover letter strings.

• Attention that covers letters is necessary for the left-lateralization of an early print-tuned ERP in Japanese hiragana
  Yasuko Okumura; Tetsuko Kasai; Harumitsu Murohashi
  NEUROPSYCHOLOGIA, 69, 22, 30, Mar. 2015, [Peer-reviewed]
  English, Scientific journal
• Emergence of visual objects involves multiple stages of spatial selection
  Tetsuko Kasai; Ryuji Takeya; Sho Tanaka
  ATTENTION PERCEPTION & PSYCHOPHYSICS, 77, 2, 441, 449, Feb. 2015, [Peer-reviewed], [Lead author]
  English, Scientific journal
• Object-based spatial attention when objects have sufficient depth cues
  Ryuji Takeya; Tetsuko Kasai
  JOURNAL OF VISION, 15, 13, 16, 2015, [Peer-reviewed], [Last author]
  English, Scientific journal
• Role of connectedness in early object-based attentional selection
  Ryuji Takeya; Tetsuko Kasai
  Shinrigaku Kenkyu, 85, 3, 276, 283, Japanese Psychological Association, 01 Aug. 2014, [Peer-reviewed], [Last author]
  Japanese, Scientific journal
• A specific visual evoked response to illusory contours is reduced by cognitive
  Ryuji Takeya; Yasuko Okumura; Tetsuko Kasai
  Japanese Journal of Physiological Psychology and Psychophysiology, 32, 1, 11, 17, 日本生理心理学会, Apr. 2014, [Peer-reviewed], [Last author]
  Japanese, Scientific journal
• Early print-tuned ERP response with minimal involvement of linguistic processing in Japanese Hiragana strings
  Yasuko Okumura; Tetsuko Kasai; Harumitsu Murohashi
  NEUROREPORT, 25, 6, 410, 414, Apr. 2014, [Peer-reviewed]
  English, Scientific journal
• Comparisons of effect on cognitive function between continuous and intermittent exercise.
  Ishihara T; Morimoto K; Yamada Y; Takeya R; Kasai T; Mizuno M
  Hokkaido journal of physical education, health and sport sciences, 48, 17, 23, 北海道体育学会, Nov. 2013, [Peer-reviewed]
  Japanese, Scientific journal
• Global visual processing decreases with autistic-like traits: A study of early lateralized potentials with spatial attention
  Tetsuko Kasai; Harumitsu Murohashi
  Japanese Psychological Research, 55, 2, 131, 143, Apr. 2013, [Peer-reviewed], [Invited]
  English, Scientific journal
• Effects of Schematic Face on Attention-spreading
  Ding, X; Kasai, T; Takeya, R; Yamada, Y; Yang, F
  IEICE Techincal Report, 112, 455, 161, 166, Mar. 2013
  English, Symposium, Attention-spreading refers to the phenomenon that when observers try to restrict attention to a particular part of a display, other parts that belong to the same object are obligatorily facilitated. Previous studies have examined effects of perceptual grouping principles such as adjacency and similarity on this process, and found that a lateralized potential relative to an attended hemi-field at occipital-temporal electrode sites reflects an attention-spreading process. In our study, we employed the rapid presentation of bilateral stimuli paradigm to explore whether or not attention-spreading occurs in response to emotional connectedness (i.e., happy or unhappy face). The results indicated that when presented with schematic face the response pattern was somewhat different from that of physically perceptual connectedness, which suggests that there may be some specific mechanisms underlying spatial integration by face or facial expression.
• Individuals with Asperger's Disorder Exhibit Difficulty in Switching Attention from a Local Level to a Global Level
  Masatoshi Katagiri; Tetsuko Kasai; Yoko Kamio; Harumitsu Murohashi
  JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS, 43, 2, 395, 403, Feb. 2013, [Peer-reviewed]
  English, Scientific journal
• Time course of spatial and feature selective attention for partly-occluded objects
  Tetsuko Kasai; Ryuji Takeya
  NEUROPSYCHOLOGIA, 50, 9, 2281, 2289, Jul. 2012, [Peer-reviewed], [Lead author]
  English, Scientific journal
• Effects of Gestalt Principles on Object-Based Selection When Two Principles are Combined : An Event-Related Potential Study
  竹谷 隆司; 河西 哲子
  映像情報メディア学会技術報告, 35, 44, 83, 88, 映像情報メディア学会, Nov. 2011
  Japanese, Symposium
• The nature of visual attention in autism-spectrum disorders: a view from biased-competition model
  Tetsuko Kasai
  Japanese Psychological Review, 54, 1, 29, 38, 心理学評論刊行会, Aug. 2011, [Invited], [Lead author]
  Japanese, Scientific journal
• The emotional influence on the breadth of attentional focus at the sensory input stage
  Moriya, H; Kasai, T; Nittono, H
  Japanese Journal of Research on Emotions, 19, 1, 1, 9, JAPAN SOCIETY FOR RESEARCH ON EMOTIONS, Jul. 2011, [Peer-reviewed]
  Japanese, Scientific journal, It has been suggested that emotional states modulate the breadth of attentional focus. However, it remains unclear whether this effect occurs from the beginning of the sensory input stage or at later stages of processing. In the present study, we recorded event-related potentials (ERPs) in a spatial selective attention task to examine the breadth of spatial attention at early visual processing stages. Twelve university students participated in the experiment. After viewing negative, neutral, and positive affective pictures, participants directed their attention to the left or right visual field and performed a target detection task. The occipitotemporal P1 (80–130 ms) elicited by standard stimuli was more positive over the hemisphere contralateral to the attended visual hemifield. This contralateral preponderance effect has been assumed to reflect the attentional gain control mechanism in the visual cortices. Although affective pictures induced significant changes in subjective emotional states, they did not modulate the P1 attention effect. The result does not support the hypothesis that emotional states modulate the breadth of attentional focus at early visual processing stages. Based on this and previous findings, we discuss that the emotional influence on the breadth of attentional focus may occur at later stages of processing.
• Are objects the same as groups? ERP correlates of spatial attentional guidance by irrelevant feature similarity
  Tetsuko Kasai; Hiroki Moriya; Shingo Hirano
  BRAIN RESEARCH, 1399, 49, 58, Jun. 2011, [Peer-reviewed], [Lead author]
  English, Scientific journal
• Attention-spreading Based on Hierarchical Spatial Representations for Connected Objects
  Tetsuko Kasai
  JOURNAL OF COGNITIVE NEUROSCIENCE, 22, 1, 12, 22, Jan. 2010, [Peer-reviewed], [Lead author]
  English, Scientific journal
• グローバル・ローカル水準間の注意シフトの検討：顕著性、制御的注意の観点から
  沼田久美子; 河西哲子; 室橋春光
  北海道LDサポート学会研究紀要, 8, 30, 34, Mar. 2009
  Japanese, Research institution
• 対人印象の形成過程における刺激属性と文脈依存性の検討
  日高茂暢; 室橋春光; 河西哲子
  北海道LDサポート学会研究紀要, 8, 35, 38, Mar. 2009
  Japanese, Research institution
• Early visual selection in near and far space: an event-related potential study
  Tetsuko Kasai
  NEUROREPORT, 19, 9, 961, 964, Jun. 2008, [Peer-reviewed], [Lead author]
  English, Scientific journal
• Visual processing characteristic differs with the Autism-spectrum quotient (AQ) in typically developing adults
  Katagiri, M; Kasai, T; Murohashi, H
  Technical report of IEICE. HIP, 107, 117, 39, 43, 一般社団法人電子情報通信学会, Jun. 2007
  Japanese, Symposium, Milne et al. indicated that individuals with high-functioning autism had a weak information system of magnocellular pathway, in comparison with typically developing individualsls. If autism has an aspect of spectrum, individuals with broader phenotype without diagnosis of autism may have a visual-processing characteristic similar to autism. This study examined the scores of autism-spectrum quotient (AQ) and social skills, and motion-coherence thresholds in typically developing adults. The results indicated that the scores of AQ and social skills correlated with the motion-coherence thresholds.
• Attribute-invariant orientation discrimination at an early stage of processing in the human visual system
  Tetsuko Kasai; Hiromi Morita; Takatsune Kumada
  VISION RESEARCH, 47, 2, 203, 209, Jan. 2007, [Peer-reviewed], [Lead author]
  English, Scientific journal
• Electrophysiological correlates of attention-spreading in visual grouping
  Tetsuko Kasai; Mariko Kondo
  NEUROREPORT, 18, 1, 93, 98, Jan. 2007, [Peer-reviewed], [Lead author]
  English, Scientific journal
• Brain mechanisms of visual selection: evidence from vent-related potentials
  Tetsuko Kasai; Takatsune Kumada
  Japanese Psychological Review, 46, 3, 371, 390, 心理学評論刊行会, Jan. 2004, [Peer-reviewed], [Invited], [Lead author]
  Japanese, Scientific journal
• Attending to a location in three-dimensional space modulates early ERPs
  T Kasai; T Morotomi; J Katayama; T Kumada
  COGNITIVE BRAIN RESEARCH, 17, 2, 273, 285, Jul. 2003, [Peer-reviewed], [Lead author]
  English, Scientific journal
• 奥行き選択関連電位による特徴表現過程の検討
  河西哲子
  北海道大学大学院教育学研究科 博士学位論文, Mar. 2002, [Peer-reviewed]
  Japanese, Doctoral thesis
• Event-related brain potentials during selective attention to depth and form in global stereopsis
  T Kasai; T Morotomi
  VISION RESEARCH, 41, 10-11, 1379, 1388, 2001, [Peer-reviewed], [Lead author]
  English, Scientific journal
• Global stereopsis における奥行きおよび形態注意に関わる事象関連電位成分
  Tetsuko Kasai; Takashi Morotomi
  The Journal of Three Dimensional Images, 13, 1, 30, 35, Jan. 1999, [Invited], [Lead author]
  Japanese, Scientific journal

• Effects of ADHD tendencies on early perceptual processing of multiple others' emotional faces
  Fengzhu Lin; Kei Kobayashi; Tetsuko Kasai, The Proceedings of the Annual Convention of the Japanese Psychological Association, 89, 624, 624, Mar. 2026
  The Japanese Psychological Association, Japanese, Summary national conference
• Effects of empathic concern in happy-face selective enumeration
  Kei Kobayashi; Tetsuko Kasai, The Proceedings of the Annual Convention of the Japanese Psychological Association, 89, 843, 843, Mar. 2026
  The Japanese Psychological Association
• 複数他者の喜び表情の計数にともなうERP成分
  小林慧; 河西哲子, 生理心理学と精神生理学, 43, 1, 52, Aug. 2025
  Japanese, Summary national conference
• 生物学と心理学の学びにおける共通点─理学部と教育学部での経験から
  河西哲子, 心理学ワールド, 106, 26, 27, Jul. 2024, [Invited], [Lead author]
• 複数他者表情の受動的観察時における 処理過程の検討
  小林慧; 河西哲子, 精神生理学と心理生理学, 42, 1, 97, Jun. 2024
• 自著を語る［私たちはなぜスマホを手放せないのか］
  長尾康子, 河西哲子, 週刊教育資料, 1737, 48, 49, Feb. 2024, [Invited]
  Japanese, Book review
• 編集委員より： 最近のジレンマについて
  河西哲子, 日本生理心理学会ニューズレター, 2023, 秋, Oct. 2023
• Monitoring multiple-others' facial expressions and its relation with trait empathy
  Kei Kobayashi; Tetsuko Kasai, Psychophysiology, 60, s74, Oct. 2023
  English, Summary international conference
• Early attentional selection processes and ADHD tendency
  Naoki Ogawa; Kei Kobayshi; Tetsuko Kasai, 認知心理学会発表論文集, 2023, 71, Jul. 2023
• 複数の他者の顔表情に対する早期ERPと情動的共感性の関連
  小林 慧; 河西 哲子, 精神生理学と心理生理学, 41, 1, 85, Jun. 2023
• 文字列処理における単語優位性効果と空間的注意
  奥村 安寿子; 河西 哲子, 精神生理学と心理生理学, 41, 1, 69, Jun. 2023
• 表面特徴が異なる物体間の境界特徴に基づく 注意誘導過過程
  河西哲子; 小林慧; 小川直輝, 精神生理学と生理心理学, 41, 1, 24, Jun. 2023
• 笑顔を示す人の数は N170 に影響する
  小林慧; 河西哲子, 生理心理学と精神生理学, 40, 2, Mar. 2023
• 傾き対比錯視と自閉スペクトラム症傾向の関連 ー刺激持続時間に着目した検討ー
  小林 慧; 小笠原 陸人; 金子 沙永; 河西 哲子, 北海道心理学研究, 45, 34, 2023
• Attention based on irrelevant feature similarity and traits of developmental disorder
  Tetsuko Kasai; Shiika Makinae; Akihiro Fuji, The Proceedings of the Annual Convention of the Japanese Psychological Association, 86, 2PM, 035, 2022, [Peer-reviewed]
  The Japanese Psychological Association
• 気分がよいとなぜ記憶容量が増えるのか―クラシック音楽を用いた検討―
  平山詠大; 河西哲子, 生理心理学と精神生理学, 39, 2, 119, Aug. 2021
  Japanese, Summary national conference
• 顔表情に対する注意の時間的推移
  原田直輝; 河西哲子, 生理心理学と精神生理学, 39, 2, 110, Aug. 2021
  Japanese, Summary national conference
• 潜在的意味連合における標的順序効果
  藤 亮裕; 河西 哲子, 北海道心理学研究, 43, 51, Mar. 2021
  Japanese, Summary national conference
• 記憶の負荷は早期の知覚過程に影響するか
  平山 詠大; 宇野 智己; 藤 亮裕; 河西 哲子, 北海道心理学研究, 42, 32, 32, 2020
  北海道心理学会, Japanese
• 健常大学生のADHD傾向による刺激の時空間的構造化の影響の違い
  藤亮裕; 河西哲子; 北城圭一; 北城圭一; 北城圭一, 生理心理学と精神生理学, 37, 2, 2019
• 健常大学生のASD傾向による刺激の時空間的構造化の影響の違い
  蒔苗詩歌; 河西哲子; 北城圭一, 生理心理学と精神生理学, 37, 2, 2019
• 文字列に対する早期ERP成分への刺激の繰り返しによる影響
  宇野智己; 河西哲子, 生理心理学と精神生理学, 37, 2, 2019
• 事象関連電位を用いた特徴類似性による群化過程の追跡
  蒔苗詩歌; 河西哲子; 北城圭一, 日本認知心理学会発表論文集(Web), 16th, 2018
• 視覚的統合への時間的予測の効果は健常者の自閉症傾向により変動する
  河西哲子; 蒔苗詩歌; 蒔苗詩歌; 北城圭一; 藤亮裕, 日本認知心理学会発表論文集(Web), 16th, 2018
• 心的回転における身体化方略は物体の色により異なるか
  蒔苗 詩歌; 河西 哲子, 北海道心理学研究, 39, 52, 52, 52, 2017
  北海道心理学会, Japanese
• 歩行環境の違いが気分と注意に与える影響 ストレス状況と対処方略に着目して
  蒔苗詩歌; 前田隆裕; 河西哲子, 環境心理学研究(Web), 5, 1, 2017
• 非注意文字列に特異的な初期ERPの経時的変化
  奥村安寿子; 宇野智己; 河西哲子; 室橋春光, 生理心理学と精神生理学, 35, 2, 2017
• INITIAL-LETTER POSITION MODULATES SPATIAL ATTENTION TOWARDS JAPANESE HIRAGANA STRINGS
  Yasuko Okumura; Tetsuko Kasai; Ryuji Takeya; Harumitsu Murohashi, PSYCHOPHYSIOLOGY, 53, S58, S58, Sep. 2016, [Peer-reviewed]
  English, Summary international 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
• Embodied strategy in a mental rotation task is more advantageous for females
  Shiika Makinae; Tetsuko Kasai, INTERNATIONAL JOURNAL OF PSYCHOLOGY, 51, 196, 196, Jul. 2016, [Peer-reviewed]
  English, Summary international conference
• Creating a mental-rotation test with embodied condition
  Makinae Shiika; Kasai Tetsuko, Proceedings of the Japanese Society for Cognitive Psychology, 14th, 92, 92, 2016
  心的回転課題の成績は，視覚手がかりにより身体への見立てが可能なとき向上することが知られる。蒔苗ら（2015）はこのような身体への類推には男女差があり，身体化を促す視覚手がかりの有効性に個人差があることを示した。今後，身体化のための視覚手がかりの利用に関する発達過程を調べることを目指し，本研究はパーソナルコンピュータを用いた実験よりも，時間的・身体的制約が少なく簡便に行える紙の検査を作成し，心的回転課題における身体化を捉えることができるのかを検討した。検査用紙には，標準刺激と4つの回転刺激があり，キューブの上部に顔があるものとないもの，また全体形状が身体模倣可能なものと不可能なものがあった。課題は標準刺激と同じ形状を回転刺激から2つ選択することだった。大学生189名を対象にした結果，顔の付加と模倣可能性による統計的に有意な成績向上が認められ，作成した検査の有効性が示唆された。, The Japanese Society for Cognitive Psychology, Japanese
• 流暢な読みに寄与する初期視覚処理-事象関連電位を用いた検討-
  宇野智己; 河西哲子; 関あゆみ, 発達性ディスレクシア研究会, 16th, 2016
• 物体としての文字列-文字列特異的なERPの左側性化は文字列自体への注意に依存する-
  河西哲子; 片倉崇吏; 宇野智己, 生理心理学と精神生理学, 34, 2, 2016
• 単一の平仮名文字に対する事象関連電位
  宇野智己; 河西哲子, 生理心理学と精神生理学, 34, 2, 2016
• Embodied Cognition and Sex Differences in a Mental Rotation Task
  Makinae, S; Yamazaki, K; Kasai, T, IEICE technical report, 114, 517, 81, 84, Mar. 2015
  Mental rotation of visual images may involve embodied cognition. This has been suggested by the fact that adding a head to aligned cubes increases behavioral performance in mental rotation tasks, reflecting that the cubes are regarded as human body. On the other hand, performances in mental rotation tasks have been shown to vary with sex. It is not obvious whether there are sex differences in embodied cognition involved in mental rotation tasks. In the present study, we compared behavioral performances of males from those of females in a mental rotation task with cubes with or without a head. The results indicate that embodied cognition was useful for rotation operations in both males and females, whereas adding a head was advantageous to matching processes only for females., Japanese, Technical report
• 瞬間的および持続的時間に関する事象関連電位による検討
  漆原 彩花; 河西 哲子; 竹谷 隆司, 日本心理学会大会発表論文集, 79, 2015
• 物体上の注意拡散は知覚的負荷により抑えられるか
  河西 哲子; 田中 翔, 日本心理学会大会発表論文集, 79, 2015
• Embodied cognition in mental rotation is more valid in females
  Makinae Shiika; Kasai Tetsuko, Proceedings of the Japanese Society for Cognitive Psychology, 13th, 55, 51, 2015
  心的回転課題の成績は女性で男性よりも低いことが知られる。一方，刺激上部に頭をつけて身体への見立て（身体化認知，embodied cognition）を可能にすると，全体処理が促進され成績が向上することも知られる。本研究の目的は，身体化認知によるイメージ操作の促進に男女差があるかどうかを明らかにすることであった。刺激は配列されたキューブであり，上部に顔があるないものとないもの，またキューブの全体形状が身体模倣可能なものと不可能なものがあった。課題は提示される2つの図形が同じかどうかの判断だった。結果，顔があるときと身体模倣が可能なときに遂行成績が向上したことから，男女ともに身体化認知の効果が確認された。特に女性は局所情報を目印として使いにくい奥行回転条件において顔による促進効果が高かったことから，心的回転課題の遂行において身体化認知は女性でより有効であることが示唆された。, The Japanese Society for Cognitive Psychology
• 課題非関連な平仮名文字列に対する複数の早い処理過程
  宇野智己; 河西哲子; 奥村安寿子, 日本認知心理学会大会発表論文集, 13th, 2015
• An event-related potential study on matching processes of numeral classifiers and nouns
  Tomoki Uno; Yasuko Okumura; Tetsuko Kasai, INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY, 94, 2, 206, 206, Nov. 2014, [Peer-reviewed]
  English, Summary international conference
• A role of visual attention in expert word reading: Implications for the cause of developmental dyslexia
  Yasuko Okumura; Tetsuko Kasai; Harumitsu Murohashi, INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY, 94, 2, 142, 142, Nov. 2014, [Peer-reviewed]
  English, Summary international conference
• Three Spatial Selection Processes and Objects in Vision
  Tetsuko Kasai; Ryuji Takeya; Sho Tanaka, The Proceedings of the Annual Convention of the Japanese Psychological Association, 78, 1AM, 1, 10 Sep. 2014
  The Japanese Psychological Association
• Sex differences in attentional guidance by object structures
  Kasai Tetsuko; Tanaka Sho; Yamada Yuji, Proceedings of the Japanese Society for Cognitive Psychology, 2014, 23, 23, 2014
  This study examined sex differences in an attentional function that selects objects or perceptual groups as units, by using event-related potentials (ERPs). Twelve males and females were required to detect infrequent targets at attended locations for bilateral letters. There were conditions where the letters were surrounded by a large oval (common condition) and by a shape switched two halves divided the oval (uncommon condition). There were no statistical significant sex differences in behavioral measures. In contrast, in ERP attention effects (differences in ERPs at hemispheres contralateral and ipsilateral to attended visual fields), only females showed a more negative deflection at early P1 latency range (70-110 ms) and a more positive deflection at early N1 latency range (130-160 ms) for the uncommon versus common conditions. The results suggest that task-irrelevant object structures guide attention at early stages of processing in females., The Japanese Society for Cognitive Psychology
• A study of spatial attention orienting for letters in hiragana strings.
  Tanaka Aiko; Okumura Yasuko; Kasai Tetsuko, Proceedings of the Japanese Society for Cognitive Psychology, 12th, 147, 147, 2014
  これまで先行手がかりを用いて，単語はユニットとして空間的注意に選択されるが，非語では1文字1文字が選択されることが示唆されている (Sieroff & Posner, 1988) 。本研究は，類似の実験において，音－文字対応が英語と異なる平仮名文字列中の文字同定に，空間的注意がどう関わるのかを検討した。刺激として平仮名4文字からなる文字列刺激が瞬間提示され，参加者は全ての平仮名文字と，その両端の文字いずれかの直下に直前に提示された手がかり刺激（数字）を記入式で答えることを求められた。結果において，手がかりによる促進効果が見られなかったことに関しては，左右の手がかり位置間の距離を改善する余地がある。しかし本研究において，両端の文字の同定率が同様に内側の文字より高いことを見出した。この結果は，左側の文字同定率が高かった先行研究とは異なるため，書記体系の違いによって空間的注意の配置が異なる可能性が示された。, The Japanese Society for Cognitive Psychology
• 心的回転課題における身体化認知の効果-粗大協応運動能力との関連-
  蒔苗詩歌; 山崎圭子; 河西哲子, 日本認知心理学会大会発表論文集, 12th, 2014
• An event-related potential study on integration processes of numeral classifiers and nouns
  Uno Tomoki; Okumura Yasuko; Kasai Tetsuko, Proceedings of the Japanese Society for Cognitive Psychology, 12th, 90, 2014
  Numeral classifiers syntactically require subsequent nouns, and they restrict semantic categories of the nouns. However, a previous study that used event-related potential showed that integration of a nouns and a numeral classifiers involves only semantic processing when they were presented as a word pair. The present study investigated whether the same is true when nouns and numeral classifiers are presented in sentences. As a result, a noun that does not correspond to precedent numeral classifier elicited not only N400 that reflects semantic integration, but also P600, which reflects structural processing. This suggests that integration of numeral classifiers and nouns involves different processes depending on experimental condition. In addition, we found an enhanced anterior positivity for classifier violation in 160-240 ms interval, which may reflect processing specific to numeral classifiers.
  , The Japanese Society for Cognitive Psychology
• 文字列に対する初期の音韻変換処理は刺激への注意を必要とする
  奥村安寿子; 河西哲子; 室橋春光, Technical Report on Attention and Cognition (2014), 16, 2014
  文字列の入力に応じて生じる自動的な音韻変換処理は，文字列に特異的な事象関連電位 (event-related potential, ERP) 成分N170 の左半球優位性に反映される．しかし平仮名を用いて，文字列自体を課題非関連とした研究では N170 の左半球優位性が生じなかった (Okumura et al., in press)．このことは，文字と音節の対応が非常に透明であり，音韻変換の自動性が高いと考えられる平仮名文字列の音韻変換処理が，文字列への注意を必要とすることを示唆する．本研究はこれを検証するために，先行研究と同様の刺激系列において文字列および記号列の色変化検出を課題とした．結果として，単語と非語は記号列に比べて，刺激提示後 130-170 ms に左半球の後頭側頭部でより優勢な ERP を惹起した．本結果と先行知見の対比から透明性の高い表記においても，初期の音韻変換処理は必ずしも自動的ではないことが示唆される．本知見は，音韻処理に障害を示す発達性読み書き障害の理解に貢献すると考えられる．
• 青年鍛錬者における運動強度の強弱変化が認知機能に及ぼす影響
  石原 暢; 森本 晃大; 山田 優二; 竹谷 隆司; 河西 哲子; 水野 眞佐夫, 体力科学, 62, 6, 542, Dec. 2013
  Japanese
• 線画刺激と塗り刺激における選択的注意―フランカー課題を用いた検討―
  鈴木沙季; 竹谷隆司; 奥村安寿子; 河西哲子, 北海道心理学研究, 36, 36, 2013
• Perceptual Categorization of Letter Strings in Early Visual Processing
  OKUMURA Yasuko; KASAI Tetsuko; MUROHASHI Harumitsu, The Proceedings of the Annual Convention of the Japanese Psychological Association, 77, 0, 1PM, 014-1PM-014, 2013
  The Japanese Psychological Association, Japanese
• ELECTROPHYSIOLOGICAL CORRELATES OF ATTENTION-SPREADING BASED ON TASK-IRRELEVANT SHAPE SIMILARITY AND LUMINANCE SIMILARITY
  Ryuji Takeya; Tetsuko Kasai, JOURNAL OF COGNITIVE NEUROSCIENCE, 123, 123, 2013, [Peer-reviewed]
  English, Summary international conference
• INDIVIDUALS WITH SELF-REPORTED ADHD SYMPTOMS HAVE A MERIT IN OBJECT-BASED ATTENTION: AN ERP STUDY IN A NON-CLINICAL POPULATION
  Yuji Yamada; Tetsuko Kasai; Harumitsu Murohashi, JOURNAL OF COGNITIVE NEUROSCIENCE, 239, 240, 2013, [Peer-reviewed]
  English, Summary international conference
• LETTR-STRING-SPECIFIC N170 BROADLY DISTRIBUTES UNDER RAPID PRESENTATION
  Yasuko Okumura; Tetsuko Kasai; Harumitsu Murohashi, JOURNAL OF COGNITIVE NEUROSCIENCE, 47, 48, 2013, [Peer-reviewed]
  English, Summary international conference
• 視覚的注意における分節化と群化の役割―事象関連電位を用いた検討―
  李旻昊; 河西哲子, Technical Report on Attention and Cognition (2013), 24, 2013
  Event-related potentials (ERPs) were recorded from 13 participants as they attended to the left or right hemifield of a visual display while fixating a central point. Bilateral stimuli were either framed by two small rounded rectangles separately (separate condition), or framed by one common rounded rectangle (common condition), or not framed (neutral condition). The effect of spatial attention was
  
  reflected by enlarged ERPs at the contralateral electrode to the attended field than the ipsilateral. Consistent with previous findings, ERP results from posterior electrodes (PO7, PO8) showed typical P1 effects under all conditions and the attenuation of N1 effect under both the separate and common conditions relative to the neutral condition. The latter effect is considered to be associated with perceptual grouping. On the other hand, the P2 and N2 effects were more positive under the separate and common conditions,
  
  respectively. The results suggest that grouping and individuation processes of perceptual organization can affect spatial attention at different stages of visual processing. This interpretation is consistent with the argument that perceptual organization should be achieved by multiple processes, rather than a unitary process at a single, pre-attentive stage., Japanese
• 高速提示下における文字列特異的なERP反応
  奥村安寿子; 河西哲子; 室橋春光, Technical Report on Attention and Cognition (2013), 10, 2013
  Japanese
• 色および形類似性に基づく空間選択
  竹谷隆司; 河西哲子, Technical Report on Attention and Cognition (2013), 7, 2013
  Visual scenes involve a number of grouping factors, which may obligatorily guide attention to task-irrelevant spatial regions within a perceptual group if the part is attended. Among grouping factors, color similarity may be more fundamental or guide attention earlier than shape similarity, because color is a surface feature and shape is a boundary feature that is extracted from surface features. The present study examined this hypothesis by using event-related potentials (ERPs). Participants were required to attend to one hemifield
  
  during a rapid presentation of bilateral stimuli, color and shape similarities of which were orthogonally manipulated. Attention effects were defined as differences between ERPs at contralateral and ipsilateral hemispheres to attended visual fields. We found that N1
  
  (140-180 ms post-stimulus) attention effects at occipital-parietal sites were decreased according to color and shape similarities without interactions. This suggests that color similarity is not more fundamental than shape similarity in the early group-based spatial selection., Japanese, Technical report
• 空間選択的注意の刺激文脈による妨害―領域共通性に関わる注意誘導効果―
  山田優士; 河西哲子; 竹谷隆司; 奥村安寿子, 生理心理学と精神生理学, 30, 2, 140, Aug. 2012
  Japanese, Summary national conference
• 複数の群化要因による独立した注意誘導―事象関連電位による検討―
  竹谷隆司; 河西哲子, 生理心理学と精神生理学, 30, 2, 139, Aug. 2012
  Japanese, Summary national conference
• 語彙性が文字列に対する空間的注意に及ぼす影響
  奥村安寿子; 河西哲子; 竹谷隆司; 室橋春光, 生理心理学と精神生理学, 30, 2, 141, Aug. 2012
  Japanese, Summary national conference
• ERPによる注意・知覚機能の評価：自閉症スペクトラム指数（AQ）を用いた予備的検討
  河西哲子, 生理心理学と精神生理学, 30, 2, 116, Aug. 2012
  Japanese, Summary national conference
• アスペルガー障害は局所から広域への注意レベルの切り替えに困難を抱えている
  片桐正敏; 河西哲子; 松井三枝; 室橋春光, 日本認知心理学会大会発表論文集, 10th, 11, 11, 01 Jun. 2012
  The purpose of the present study was to determine whether individuals with Asperger's disorder exhibit difficulty in switching attention from a local level to a global level. Eleven participants with Asperger's disorder and 11 age- and gender-matched healthy controls performed a switching task using Navon-type hierarchical stimuli. As a result, the both groups exhibited the benefit of level-repetition at both levels. In addition, individuals with Asperger's disorder exhibited difficulty in switching attention from a local level to a global level compared to control individuals. These findings suggested that there is a problem of inhibitory mechanism that influences the output of enhanced local visual-perceptual processing in Asperger's disorder., The Japanese Society for Cognitive Psychology, Japanese
• 持続的な視覚的注意への実行機能及び動機づけの関与－事象関連電位を用いた検討－
  山田 優士; 河西 哲子; 室橋 春光, 日本心理学会大会発表論文集, 76, 2012
• 物体ベースの空間選択過程は課題に依存する
  竹谷隆司; 河西哲子, 日本心理学会大会発表論文集, 2012
• Effects of Lexicality and Reading Direction on Spatial Attention toward Character Strings
  OKUMURA Yasuko; KASAI Tetsuko; TAKEYA Ryuji; MUROHASHI Harumitsu, The Proceedings of the Annual Convention of the Japanese Psychological Association, 76, 0, 3PMA48, 3PMA48, 2012
  The Japanese Psychological Association, Japanese
• Effects of Gestalt Principles on Object-Based Selection When Two Principles are Combined : An Event-Related Potential Study
  Takeya R; Kasai, T, Technical report of IEICE. HIP, 111, 283, 83, 88, Nov. 2011
  Object-based selection may be completed by a mechanism that attention is guided over an object or a group, generated by Gestalt factors. The present study examined effects of combined grouping factors on attention-guidance processes, reflected by ERPs (event-related potentials), by an orthogonal manipulation of size and color similarities of bilateral stimuli. Attentional directions at the moment were indexed by lateralized potentials that enhanced at the hemisphere contralateral to the attended hemi-field. The results indicated that attention was independently guided by size similarity at ..., 一般社団法人電子情報通信学会, Japanese, Technical report
• The effect of verbal reward on sense of time
  Yuji YAMADA; Harumitsu MUROHASHI; Tetsuko KASAI, The Proceedings of the Annual Convention of the Japanese Psychological Association, 75, 2EV094, 2EV094, 15 Sep. 2011
  The Japanese Psychological Association
• Effects of encoding time on shrinkage of object memory
  Yoshiya Wada; Tetsuko Kasai; Harumitsu Murohashi, The Proceedings of the Annual Convention of the Japanese Psychological Association, 75, 3AM108, 3AM108, 15 Sep. 2011
  The Japanese Psychological Association
• Attention-Spreading Based on Physical Connectivity and Perceptual Unity
  Tetsuko KASAI; Ryuji TAKEYA, The Proceedings of the Annual Convention of the Japanese Psychological Association, 75, 3PM076, 3PM076, 15 Sep. 2011
  The Japanese Psychological Association
• 顔文字刺激における倒立効果の検討
  日高茂暢; 河西哲子; 室橋春光, 日本心理学会第75回大会発表論文集, 714, Sep. 2011
  Japanese, Summary national conference
• 対称性と輝度極性による独立した注意拡散
  竹谷隆司; 河西哲子, 日本心理学会第75回大会発表論文集, 558, Sep. 2011
  Japanese, Summary national conference
• 課題非関連刺激の処理に関する研究―ERPによる知覚的負荷理論の検討―
  田中翔; 河西哲子, 北海道心理学研究, 33, 67, Mar. 2011
  Japanese, Summary national conference
• 数計算時の主観的輪郭知覚―ERPを用いた検討―
  竹谷隆司; 河西哲子; 奥村安寿子; 岩田みちる; 足立明夏; 渡辺隼人, 北海道心理学研究, 33, 33, 66, Mar. 2011
  Japanese, Summary national conference
• ERP Manifestations of Orthographic and Phonological Processing of Hiragana Letter Strings:: Features and Time Course
  OKUMURA Yasuko; MUROHASHI Harumitsu; KASAI Tetsuko, The Proceedings of the Annual Convention of the Japanese Psychological Association, 75, 0, 1PM116, 1PM116, 2011
  The Japanese Psychological Association, Japanese
• Phonemic category change detection on Japanese vowels in native Japanese using multiple voices
  Michiru IWATA; Harumitsu MUROHASHI; Tetsuko KASAI, The Proceedings of the Annual Convention of the Japanese Psychological Association, 74, 1EV128, 1EV128, 20 Sep. 2010
  The Japanese Psychological Association, Japanese, Summary national conference
• 事象関連電位を用いた社会的文脈における表情認知過程の検討
  日高茂暢; 豊巻敦人; 室橋春光; 河西哲子, 日本心理学会第74回大会発表論文集, 659, Sep. 2010
  Japanese, Summary national conference
• 自閉症スペクトラムにおける文脈変化時の意味ネットワーク活性化
  足立明夏; 室橋春光; 河西哲子, 日本心理学会第74回大会発表論文集, 753, Sep. 2010
  Japanese, Summary national conference
• Effect of phonological information on semantic integration between sentence context and terminal word by Japanese English learners
  OKUMURA Yasuko; MUROHASHI Harumitsu; KASAI Tetsuko, The Proceedings of the Annual Convention of the Japanese Psychological Association, 74, 0, 867, 1EV132, Sep. 2010
  The Japanese Psychological Association, Japanese, Summary national conference
• 課題無関連の特徴類似性は空間的注意を誘導する
  河西哲子; 守谷大樹, 日本心理学会第74回大会発表論文集, 580, Sep. 2010
  Japanese, Summary national conference
• 印象形成過程における表情と背景色の処理に関する検討
  日高茂暢; 室橋春光; 河西哲子, 日本心理学会第72回大会発表論文集, 687, Sep. 2008
  Japanese, Summary national conference
• 視覚ワーキングメモリにおけるオブジェクトの収縮
  片桐正敏; 河西哲子; 室橋春光, 日本心理学会第72回大会発表論文集, 859, Sep. 2008
  Japanese, Summary national conference
• 視覚的群化における注意誘導と刺激誘発電位
  河西哲子, 生理心理学と精神生理学, 25, 2, 173, Aug. 2007
  Japanese, Summary national conference
• 感情状態による視覚処理への影響：刺激競合事態における検討
  守谷大樹; 河西哲子; 室橋春光, 生理心理学と精神生理学, 25, 2, 107, Aug. 2007
  Japanese, Summary national conference
• Two stages in object-based attentional guidance : Evidence from event-related brain potentials
  Kasai T, Technical report of IEICE. HIP, 107, 117, 7, 12, Jun. 2007
  Attention selects "objects" as the most fundamental unit, which may be achieved through a process where attention automatically spreads within the whole region of an object. The present study examined effects of connectedness (connected/unconnected, thickness of the connecting line) on the attention-spreading over bilateral-stimulus arrays by using event-related brain potentials (ERPs). Directions of attention at the moment were indexed by lateralized potentials that enhanced at the hemisphere contralateral to the attended hemi-field. As a result, electrophysiological effects associated wit..., The Institute of Electronics, Information and Communication Engineers, Japanese
• Biased competition based on hierarchical grouping representations in the human visual cortex
  Tetsuko Kasai; Hiroki Moriya, NEUROSCIENCE RESEARCH, 58, S55, S55, 2007, [Peer-reviewed]
  English, Summary international conference
• 感情状態による焦点的注意の変容は情報処理段階で異なるか
  守谷大樹; 河西哲子; 室橋春光, 日本心理学会第70回大会発表論文集, 725, Nov. 2006
  Japanese, Summary national conference
• 視覚的群化による注意誘導：持続的注意課題における事象関連電位を用いた検討
  河西哲子, 日本心理学会第70回大会発表論文集, 569, Nov. 2006
  Japanese, Summary national conference
• 感情状態が初期視覚過程における空間的注意の範囲に及ぼす影響
  守谷大樹; 河西哲子; 室橋春光, 生理心理学と精神生理学, 24, 2, 162, Aug. 2006
  Japanese, Summary national conference
• What task requirements cause attentional selection at a level of visual processing after perceptual completion?
  Kasai, T; Kawada, M, Vision, 18 suppl., 209, 209, Jul. 2006, [Peer-reviewed]
  English
• 脳波を指標とした高齢者の課題遂行時における注意・集中について
  豊村洋子; 室橋春光; 河西哲子, 北海道心理学研究, 28, 72, Sep. 2005
  Japanese, Summary national conference
• 注意シフト関連電位に与える観察距離の影響
  牧孝之; 河西哲子; 室橋春光, 日本心理学会第69回大会発表論文集, 514, Sep. 2005
  Japanese, Summary national conference
• 近空間における初期視覚選択電位の左右視野非対称性
  河西哲子, 日本心理学会第69回大会発表論文集, 563, Sep. 2005
  Japanese, Summary national conference
• 主観的左右判断にかかわる身体方向操作の影響
  牧孝之; 河西哲子; 室橋春光, 日本心理学会第68回大会発表論文集, 547, Aug. 2004
  Japanese, Summary national conference
• Attentional shift within an object and between objects in 3D space
  Tetsuko Kasai; Takatsune Kumada, PROCEEDINGS OF THE TWENTY-SIXTH ANNUAL CONFERENCE OF THE COGNITIVE SCIENCE SOCIETY, 1575, 1575, 2004, [Peer-reviewed]
  English
• 注意のオブジェクト内利得とオブジェクト間損失
  河西哲子; 熊田孝恒, 日本心理学会第67回大会発表論文集, 510, Sep. 2003
  Japanese, Summary national conference
• 近・遠空間におけるオブジェクトベースの注意効果
  河西哲子; 熊田孝恒, Technical Report on Attention and Cognition, 2, 20, Feb. 2003
  Japanese
• 視覚的補完による単一オブジェクト内の注意移動
  河西哲子; 熊田孝恒, 日本心理学会第66回大会発表論文集, 464, Sep. 2002
  Japanese, Summary national conference
• Selection of orientation defined by within- and between- feature dimensions: An ERP study.
  Kasai, T; Morita, H; Kumada, T, Technical Report on Attention and Cognition, 1, 3, Sep. 2002
  English
• Effects of occlusion on within-object shift of attention
  Tetsuko Kasai; Takatsune Kumada, Journal of Vision, 2, 7, 688, 2002, [Peer-reviewed]
  English
• ADHD児における並列探索時の刺激駆動型注意とトップダウン制御
  河西哲子; 塚原睦子; 片山順一; 長沼睦夫; 諸冨 隆, 日本認知科学会第18回大会発表論文集, 90, 91, Jun. 2001
  Japanese, Summary national conference
• Attention to surface and boundary in three-dimensions: An event-related brain potential study
  Tetsuko Kasai; Takashi Morotomi, Journal of Vision, 1, 3, 388, 2001, [Peer-reviewed]
  English
• 両眼視差による位置と形状への選択的注意時のＥＲＰ
  河西哲子; 諸冨 隆, 日本心理学会第64回大会発表論文集, 64th, 366, Nov. 2000
  Japanese, Summary national conference
• 奥行き及び形に注意時の視覚誘発反応
  河西哲子, 生理心理学と精神生理学, 18, 2, 79, 80, Aug. 2000
  Japanese, Summary national conference
• 選択的注意時のＥＲＰを指標とする両眼立体視過程の検討
  河西哲子; 諸冨 隆, 生理心理学と精神生理学, 18, 2, 180, Aug. 2000
  Japanese, Summary national conference
• ３次元空間における空間的注意過程のＥＲＰによる検討
  河西哲子; 諸冨 隆, 北海道心理学研究, 23, 36, Jul. 2000
  Japanese, Summary national conference
• 線運動錯視における空間的注意の移動：ERPによる検討
  河西哲子; 沼澤哲也; 諸冨 隆, 生理心理学と精神生理学, 17, 2, 135, Sep. 1999
  Japanese, Summary national conference
• 線運動錯視における空間的注意と運動印象： ERPによる検討
  河西哲子; 諸冨 隆, 日本心理学会第63回大会発表論文集, 285, Sep. 1999
  Japanese, Summary national conference
• 視覚パタンマスキングへの刺激の奥行き位置の効果
  河西哲子; 諸冨 隆, 北海道心理学研究, 21, 56, Oct. 1998
  Japanese, Summary national conference
• 視覚パタンマスキングにおける検査刺激及びマスク刺激の相対的奥行き位置の効果
  河西哲子; 諸冨 隆, 日本心理学会第62回大会発表論文集, 570, Oct. 1998
  Japanese, Summary national conference
• 検査刺激の見えに及ぼすマスク刺激の相対的奥行き位置の効果
  河西哲子; 諸冨 隆, 日本心理学会第61回大会発表論文集, 497, Sep. 1997
  Japanese, Summary national conference

• 私たちはなぜスマホを手放せないのか 「気が散る」仕組みの心理学・神経科学
  河西 哲子; 成田 啓行
  アダム・ガザレイ; ラリー・D・ローゼン, 福村出版, 11 Dec. 2023, 4571210469, 368
• 心理学概論 : 歴史・基礎・応用
  加藤, 弘通; 川田, 学, 第3章知覚と認知―適応と学習のために世界を知る働き
  ミネルヴァ書房, May 2020, 9784623087044, vii, 222p, Japanese, [Contributor]
• 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, 分担執筆：4章注意の焦点範囲; 9章注意の発達と脳波
  ナカニシヤ出版, Mar. 2020, 9784779514524, ix, 198p, Japanese, [Joint editor]

  
• ともに生きるための 教育学へのレッスン40――明日を切り拓く教養
  北海道大学教育学部; 松本 伊智朗; 宮﨑 隆志; 白水 浩信, I 心と身体 7 脳と視覚世界との関り
  明石書店, 11 Aug. 2019, 4750348821, 200, Japanese, [Contributor]

  
• 基礎心理学入門
  田山, 忠行; 須藤, 昇, 5章 注意
  培風館, 2012, 9784563052201, vi, 295p, Japanese, [Contributor]
• 新編感覚・知覚心理学ハンドブック
  大山, 正; 今井, 省吾; 和気, 典二; 菊地, 正, 3-7-2 脳波による注意の神経基盤の解明
  誠信書房, 2007, 4414305039, 2冊, Japanese, [Contributor]
• 認知のエイジング・入門編
  デニス・C. パーク, ノバート シュワルツ他(口ノ町康夫,坂田陽子,川口潤), 4章 注意とエイジング，6章 脳のエイジングの認知神経心理学，9章 エイジング，サーカディアン覚醒パターン，認知
  北大路書房, Mar. 2004, 9784762823619, Japanese, Scholarly book, [Joint translation]

• 自閉症傾向は複数顔に対する知覚処理時間に関わる
  張雅荃; 小林慧; 河西哲子
  北海道心理学会第72回大会, 26 Oct. 2025, Japanese, Poster presentation
• Visuo-attentional processes underlying selective enumeration of emotional faces
  Kobayashi, K.; Kasai, T.
  Society for Psychophysiological Research, 16 Oct. 2025, English, Poster presentation
• 喜び表情顔の選択的計数における共感的関心の影響
  小林 慧; 河西 哲子
  日本心理学会第89回大会, 07 Sep. 2025, Japanese, Poster presentation
• 複数他者表情の早期知覚段階におけるADHD傾向の影響
  林 峰竹; 小林 慧; 河西 哲子
  日本心理学会第89回大会, 06 Sep. 2025, Japanese, Poster presentation
• 複数他者の喜び表情の計数にともなうERP成分
  小林慧; 河西哲子
  第43回生理心理学会大会, 24 May 2025
• 複数他者表情の受動的観察時における処理過程の検討
  小林慧; 河西哲子
  第42回日本生理心理学会大会, 25 May 2024
• 思いやりがある人は相対的にネガティブな顔表情に注意が向く
  小林慧,河西哲子
  北海道心理学会第70回大会, 11 Nov. 2023, Poster presentation
• Monitoring multiple-others' facial expressions and its relation with trait empathy
  Kei Kobayashi; Tetsuko Kasai
  Society for Psychophysiology, 27 Sep. 2023, English, Poster presentation
• 知覚体制化への時間的予測の影響における性差
  河西哲子; 蒔苗詩歌
  日本心理学会第87回大会, 17 Sep. 2023
• 注意の初期選択過程とADHD傾向の関連
  小川直輝; 小林慧; 河西哲子
  日本認知心理学会第21回大会, 01 Jul. 2023, Japanese, Poster presentation
• 文字列処理における単語優位性効果と空間的注意
  奥村安寿子; 河西哲子
  第41回日本生理心理学会大会, 21 May 2023, Poster presentation
• 複数の他者の顔表情に対する早期ERPと情動的共感性の関連
  小林慧; 河西哲子
  第41回日本生理心理学会大会, 21 May 2023, Poster presentation
• 表面特徴の異なる物体間の境界特徴に基づく注意誘導過程
  河西哲子; 小林慧; 小川直輝
  第41回生理心理学会大会, 20 May 2023, Japanese
• 他者の事前知識が視線手がかりによる信頼感に及ぼす影響
  小石川奈生; 小林慧; 河西哲子
  ヒューマンコミュニケーション基礎研究会, 02 Feb. 2023, Japanese, Oral presentation
  Feb. 2023 - Feb. 2023
• 文字列の視覚的均衡への美的印象には文字の音韻情報が関わる
  関貴生; 河西哲子
  ヒューマンコミュニケーション基礎研究会, 02 Feb. 2023, Japanese, Oral presentation
  Feb. 2023 - Feb. 2023
• 傾き対比錯視と自閉スペクトラム症の関連 ー刺激持続時間に着目した検討ー
  小林慧; 小笠原陸人; 金子沙永; 河西哲子
  第13回北海道心理学会・東北心理学会 合同大会, 05 Nov. 2022, Japanese, Oral presentation
• 非関連な特徴類似性に基づく注意と発達障害傾向：分割的注意課題における事象関連電位による検討
  河西哲子; 蒔苗詩歌; 藤亮裕
  日本心理学会第86回大会, 09 Sep. 2022, Japanese, Poster presentation
• 笑顔を示す人の数はN170に影響する
  小林慧; 河西哲子
  第40回日本生理心理学会・日本感情心理学会第30回大会 合同大会, 27 May 2022, Japanese, Poster presentation
• Stabilized time perception with visual consistency in elderly people
  Tetsuko Kasai; Yoko Sakata
  The 32nd International Congress of Psychology, 20 Jul. 2021, English, Poster presentation
• Hair color and prejudice in Japan: a case study
  Akihiro Fuji; Tetsuko Kasai
  The 32nd International Congress of Psychology, 19 Jul. 2021, English, Poster presentation
• 顔表情に対する注意の時間的推移
  原田直輝; 河西哲子
  第39回日本生理心理学会大会, 22 May 2021, Poster presentation
  23 May 2021
• 気分がよいとなぜ記憶容量が増えるのか―クラシック音楽を用いた検討―
  平山詠大; 河西哲子
  第39回日本生理心理学会大会, 22 May 2021, Poster presentation
• 潜在的意味連合における標的順序効果
  藤亮裕; 河西哲子
  北海道心理学会第67回大会, 01 Nov. 2020, Japanese, Others
• Individual Differences in Early Versus Late Selection for Binding: The Trait of Autism-Spectrum Disorder Varies the Stage of Attentional Selection with Temporal Regularity.
  Kasai, T., Makinae, S., Fuji, A., Imiya, T., Kitajo, K.
  Psychonomic Society 60th Annual Meeting, 15 Nov. 2019, English, Poster presentation
• 記憶の負荷は早期知覚過程に影響するか
  平山 詠大; 宇野智己; 藤亮裕; 河西哲子
  北海道心理学会, 06 Oct. 2019, Japanese, Poster presentation
  [Domestic Conference]
• 健常大学生のASD傾向による刺激の時空間的構造化の影響の違い
  蒔苗詩歌; 河西哲子; 北城圭一
  第37回日本生理心理学会, 25 May 2019, Japanese, Poster presentation
  [Domestic Conference]
• 健常大学生のADHD傾向による刺激の時空間的構造化の影響の違い
  藤亮裕; 河西哲子; 北城圭一
  第37回日本生理心理学会, 25 May 2019, Japanese, Poster presentation
  [Domestic Conference]
• 文字列に対する早期ERP成分への刺激の繰り返しによる影響
  宇野智己; 河西哲子
  第37回日本生理心理学会, 25 May 2019, Japanese, Poster presentation
  [Domestic Conference]
• Effects of embodied cues on mental-rotation performance in children
  Makinae, S; Kasai, T
  59th Annual Meeting of Psychonomic Society, Nov. 2018, English, Poster presentation
  Embodied cues have been found to facilitate “body analogy” and improve mental rotation
  performance in adults. The present study examined whether embodied cues are also useful for children. Eighty-nine elementary school children (1-3 grades) participated in a pencil-and-paper task that required mental rotation to indicate solid figures were identical to standards. Imitability of whole
  shapes and existence of a face at an appropriate position were manipulated, and participants were separated into three groups based on the scores in the condition without the embodied cues. The results indicated that imitability increased in the lowand middle score groups, suggesting a facilitation of holistic rotation with body analogy. Adding face also improved scores in those groups, although it worsened in the high group. This suggests a distractive effect of face involved in performing the
  current task. Overall, the present results show that children can use embodied cues for body analogy., [International presentation]
• Early perceptual representations of visual words are manifested differently by task demands: Evidence from ERP measures of spatial attention
  Okumura, Y; Kasai, T; Takeya, R; Murohashi, H
  The 19th World Congress of Psychophysiology, 04 Sep. 2018, English, Poster presentation
  Introduction
  Although attention has been indicated to play important role in reading words, not much is known about how attention selects them. In our previous study (Okumura et al., SPR 2016) , spatial attention towards the left end of Japanese Hiragana words and nonwords remained focal during early sensory/perceptual processing but was indicated to spread over reversed words (i.e., words written from right to left), as indexed by the modulation of P1 spatial attention effect in event-related potentials (ERPs). While these results suggest that initial-letter position may guide attention to visual words, the study used visual feature detection that required participants to see rather than to read the stimuli. Therefore, the present study aimed to further examine the interaction between attention and visual word processing by using a phonological task that involves higher-order information of words.
  Methods
  ERPs were recorded from 14 native Japanese adults. Words, nonwords, and reversed words were consisted of four Hiragana letters aligned horizontally across the left and right hemifields. Participants attended to either the left (attend-left) or right end (attend-right) of the rapidly and randomly presented stimuli, and detected letters that represent a particular vowel sound (i.e., targets) when they appeared at the attended hemifield. ERPs at the left and right occipito-temporal electrodes (PO7, PO8) were quantified as peak amplitudes within designated intervals.
  Results
  In ERPs elicited by the standard stimuli, P1 (100-150 ms) at bilateral occipito-temporal electrodes (PO7, PO8) wasere more positive when attending to the contralateral end of the stimuli, regardless of type (all ps < .04). N1 (150-210 ms) for nonwords at the left occipito-temporal electrode was more negative in the attend-right than in the attend-left condition (p < .02), but no attention effects were indicated for words and reversed words.
  Discussion
  In contrast to our previous study, P1 attention effect was present for all stimulus type and both attention conditions, which may reflect increased focal attention due to higher task demand (simple visual feature vs. phonology). Moreover, attention effect was found in N1 for nonwords, but not for words and reversed words. This attention-spreading effect suggests that letter strings with lexical knowledge are represented as abstract integrated percepts at N1 level, since the spatial arrangement of constituent letters (normal vs. reversed) was not concerned. In summary, the present study suggestsed qualitatively different spatial representation of letter strings at P1 and N1 level, and the emergence of which may depends on the dimension(s) of them to be processed., [International presentation]
• Effects of temporal expectation on visual integration vary with autism tendency in healthy population
  Kasai, T; Makinae, S; Kitajo, K; Fuji, A
  The 16th Convention of Japanese Society for Cognitive Psychology, 01 Sep. 2018, Japanese, Oral presentation
  [Domestic Conference]
• Time course of grouping processes due to feature similarity by indexing event-related potentials
  Makinae, S; Kasai; T. Kitajo, K
  The annual convention for the Japanese Society of Cognitive Psychology, 01 Sep. 2018, Japanese, Poster presentation
  [Domestic Conference]
• The left lateralization of print-specific negativity depends on visual attention in competitive stimuli
  Uno, T; Katakura, T; Kasai, T
  10th Annual Meeting of Society for the Neurobiology of Language, 16 Aug. 2018, English, Poster presentation
  INTRODUCTION: Fluent reading requires to implicitly decode the phonological information from logographic scripts. Previous studies using event-related potentials (ERPs) showed that such implicit grapheme-to-phoneme conversion was reflected by the print-specific N170, which was typically distributed over left occipito-temporal areas (Bentin et al., 1999; Maurer & McCandliss, 2007). Although early print processing may highly be automatized, recent studies have suggested that the leftward asymmetry of the N170 depends on visual attention based on observations in separate experiments (Okumura et al., 2014, 2015). The present study tested this notion, by directly manipulating visual attention for letter/symbol strings that were spatially overlapped with random-dot fields. We asked participants to attend either the strings or dots, so that the amount of attention available for letter strings were varied. METHODS: Twelve native Japanese speakers (6 females, 21-27 years) participated in this experiment. Hiragana words, nonwords and symbols strings (107 stimuli each) were spatially overlapped with the random-dot field (1° by 4.1°) and presented for 100 ms with interstimulus intervals of 300-600 ms (50 ms/step). In the attend-string condition, participants were required to detect navy letter/symbol strings (i.e., target) and to ignore navy-dot field (i.e., nontarget), while the targets and nontargets were reversed in the attend-dot condition. Each block contained 279 standard stimuli (both strings and dots were black), and 21 targets and 21 nontargets in both conditions. RESULTS: RTs were faster and Hit rates were higher in the attend-string task compared to the attend-dot task (ps<.01), and FA rates were higher in the attend-dot condition (p=.009). These behavioral results indicate that attending to strings was easier than attending to dots and that letter/symbol strings were more salient objects. In ERP results during 150-200 ms poststimulus, hiragana words induced a more negative deflection compared to the other stimuli (p=.006), which did not differ across the attention conditions (p=.26). Importantly, a left-lateralized negative enhancement for prints was observed only in the attend-string condition during 200-300 ms (p=.03). DISCUSSIONS: In the present study we observed a pattern of results similar to that in previous studies during C1/P1 and N170 latencies (e.g., Okumra et al., 2015; Proverbio & Adorni, 2009). However, interestingly, the letter-string/word effects were generally delayed, which may be due to additional time required for segregating letter strings from visual noise (i.e., dots). As the earliest effect, we found a word-specific negativity during 150-200 ms regardless of the attention conditions. Such insensitivity to attention suggests that word representations in early stages of the cortical hierarchy can be activated basically in an automatic fashion. Most importantly, attending to letters did elicit a left-lateralized negativity during 200-300 ms, which may be a correlate of the typical print-specific N170. Given that the left-lateralization of print-specific negativity reflects phonological mapping (Maurer & McCandliss, 2007), it is suggested that attentional resources are necessary for activating phonological information from prints., [International presentation]
• Visualization of early stages of processing and their individual differences
  KASAI Tetsuko
  1st Regular meeting of tokai psychological association 2018, May 2018, Japanese, Invited oral presentation
  日常生活では多くの刺激を次々と処理する必要があります。それを支えているのは、意識に上る前の早い段階で生じる脳内の処理です。そのような早い段階の処理過程を観察するために、私たちの研究室では脳波を用いた実験を行ってきました。そのうち今回は、読むことに関わる文字列や単語に対する早い処理、細部よりも全体を優先的に知覚するための早い処理、さらにそれらの個人差について得られた最近の知見を紹介します。, [Invited], [Domestic Conference]
• Attention and self-reported ADHD tendency modulate very early electrophysiological responses for visual words
  Kasai, T; Tanaka, A; Okumura, Y; Uno, T
  Cognitive Neuroscience Society 25th Annual Meeting, 25 Mar. 2018, English, Poster presentation
  Purpose. Previous behavioral studies suggest that visual words operate as perceptual units or “objects”, whereas early electrophysiological responses (e.g., N170) does not necessarily discriminate words from nonwords. The present study examined whether the activation of perceptual word representations involves attention and/or individual differences in attention, by indexing event-related potentials.
  Methods. Sixteen participants were presented with hiragana (2-letter words and nonwords) or symbol strings, overlapped with horizontal lines. They detected infrequent color changes of either the strings (attend-string) or the lines (attend-line) during their rapid presentations in given blocks. After recording sessions, participants filled the symptom checklist of adult ADHD self-report scale (ASRS-v1.1).
  Results. Increased behavioral performance and letter-string-specific (words and nonwords vs. symbols) left-lateralized negativities (190-220 ms post-stimulus) were observed in the attend-string against attend-line condition. More importantly, P1 (130-160 ms) was enlarged for words compared to nonwords in the attend-line condition (i.e., when strings were ignored). Furthermore, an attention effect (attend-string minus attend-line) at an earlier range (70-100 ms) for words were positively correlated with ASRS scores.
  Conclusions. We found that visual cortex is organized to represent visual words, or learned combinations of letters, at very early stages of processing, the manifestations of which depend on the state of attention and attentional traits of individuals. These findings suggest a tight link between fluent reading and attention., [International presentation]
• When illusory contour helps: interplays between temporal attention and visual perceptual organization.
  Kasai, T; Makinae, S; Kitajo, K
  58th annual meeting of Psychonomic Society, Nov. 2017, English, Poster presentation
  Temporal attention may bias early perceptual processing. The case of perceptual organization with Kanizsa square was examined in this study. Packmen aligned inward or outward were randomly presented with 50 ms duration, and the inter-stimulus interval was constant 1450 ms or randomly varied (850–2050 ms, 5 steps). The task was to judge the direction (left, right) of a small central arrow, presented infrequently (1/3) with the packmen. Correct responses were faster in constant blocks in comparison to random blocks; more importantly, this effect was more prominent for the inward, rather than outward, packmen. This suggests that temporal regularity or expectation facilitated task-irrelevant figural formation and to discriminate targets within the figure. On the other hand, miss responses for the inward packmen decreased in random blocks, indicating a contribution of figural enhancement to detect events that occurred at unexpected timing. We also found event-related-potential correlates of these operations., [International presentation]
• Effects of stimulus color on body analogy in mental rotation.
  Makinae, S; Kasai, T
  58th annual meeting of Psychonomic Society, Nov. 2017, English, Poster presentation
  Mental rotation performance can improve when adding a face at the top of cube arrays or making them possible posture imitations
  (body analogy). However, previous studies that showed such effects used only pink cubes (Amorim et al., 2006; Voyer &
  Jansen, 2016). In this study, we tested whether body analogy is useful for mental rotation regardless of cubes’ color (pink,
  blue). The task was to judge whether a pair of cube arrays was the same or not, and face addition and imitation possibility
  were orthogonally manipulated. The results showed that both face and imitable postures were useful for mental-rotation
  performance in the pink and blue conditions. However, the imitation-possibility effect when face was not added was greater
  for pink rather than blue cubes. This suggests that stimulus color is a facilitating factor for body analogy in spatial operation., [International presentation]
• 非注意文字列に特異的な初期ERPの経時的変化
  奥村安寿子; 宇野智己; 河西哲子; 室橋春光
  生理心理学会, May 2017, Japanese, Poster presentation
  [Domestic Conference]
• Attention modulates relative lateralization of N170 for single letters in Japanese Hiragana
  Uno, T; Seki, A; Kasai, T
  Cognitive Neuroscience Society 24th Annual Meeting, 26 Mar. 2017, English, Poster presentation
  [International presentation]
• 歩行環境の違いが気分と注意に与える影響 ―ストレス状況と対処方略に着目して―
  蒔苗詩歌; 前田隆裕; 河西哲子
  環境心理学会第10回大会, 11 Mar. 2017, Japanese, Poster presentation
  [Domestic Conference]
• 心的回転における身体化方略は物体の色により異なるか
  蒔苗詩歌; 河西哲子
  第12回東北心理学会・北海道心理学会合同大会, 01 Oct. 2016, Japanese, Poster presentation
  [Domestic Conference]
• 遠近視空間における視覚機能の検討
  池田陽介; 河西哲子
  第12回東北心理学会・北海道心理学会合同大会, 01 Oct. 2016, Japanese, Poster presentation
  [Domestic Conference]
• Initial-letter position modulates spatial attention toward Japanese Hiragana strings
  Okumura, Y; Kasai, T; Takeya, R; Murohashi, H
  Society for Psychophysiological Research 56th Annual Meeting, 23 Sep. 2016, English, Poster presentation
  [International presentation]
• Psychological "Instant" and "Continuance": An event-related potential study of duration selective attention
  Urushihara, A; Kasai, T
  31st International Congress of Psychology, 29 Jul. 2016, English, Poster presentation
  [International presentation]
• Embodied strategy in a mental rotation task is more advantageous for females
  Makinae, S; Kasai, T
  31st International Congress of Psychology, 26 Jul. 2016, English, Poster presentation
  [International presentation]
• Creating a mental-rotation test with embodied condition
  Makinae, S; Kasai, T
  The 14th Annual Convention of the Japanese Society for Cognitive Psychology, 18 Jun. 2016, Japanese, Poster presentation
  [Domestic Conference]
• 単一の平仮名文字に対する事象関連電位
  宇野智己; 河西哲子
  第３４回日本生理心理学会大会, 15 May 2016, Japanese, Poster presentation
  名古屋大学, [Domestic Conference]
• 物体としての文字列：文字列特異的なERPの左側性化は文字列への注意に依存する
  河西哲子; 片倉崇吏; 宇野智己
  第３４回日本生理心理学会大会, 15 May 2016, Japanese, Poster presentation
  名古屋大学, [Domestic Conference]
• 心理量を持たない時間：瞬間的時間の照合過程に関わる事象関連電位
  漆原彩花; 河西哲子
  第３４回日本生理心理学会大会, 14 May 2016, Japanese, Poster presentation
  [Domestic Conference]
• ひらがな文字列に対する空間的注意は語頭位置に調整される
  奥村安寿子; 河西哲子; 室橋春光
  第３４回日本生理心理学会大会, 14 May 2016, Japanese, Poster presentation
  [Domestic Conference]
• 物体上の注意拡散は知覚的負荷により抑えられるか
  河西哲子; 田中翔
  日本心理学会第79会大会, 24 Sep. 2015, Japanese, Poster presentation
  [Domestic Conference]
• 瞬間的および持続的時間に関する事象関連電位による検討
  漆原彩花; 河西哲子; 竹谷隆司
  23 Sep. 2015, Japanese, Poster presentation
  [Domestic Conference]
• Classical attentional paradigms of event-related potentials reveal stages of visual processing for the formation of perceptual objects in three-dimensional space
  Kasai, T
  Asia-Pacific Conference on Vision, 12 Jul. 2015, English, Nominated symposium
  Nanyang Executive Centre, NTU, Singapore, Spatial attention typically causes amplitude modulations of sequential event-related potentials (ERPs), such as P1, N1, and P2, over occipito-temporal scalp sites within about 300 ms after onsets of visual stimuli, which may reflect gating mechanisms in the flow of visual processing. However, it remains unclear what types of visual processing are manifested by each ERP modulation. Computational views suggest that our visual system is specialized to extract objects from fragmented retinal images, which requires long-range spatial interactions in the visual cortical hierarchy. Previous research has shown that N1 enhancement for unilateral probes at attended versus unattended locations is decreased when the probes are embedded in pre-viewed large objects. This suggests that neural activations by spatial attention spread over object representations in the lateral occipital cortex. In our laboratory, we have applied another classical paradigm of spatial attention with bilateral stimulus arrays and found the following. 1) Attention-spreading for object onsets was also associated with N1. 2) The N1 attention-spreading effect occurred irrespective of types of visual grouping, such as connectedness, achromatic-color similarity, shape similarity, and amodal completion. 3) A P2 attention-spreading effect, rather than the N1 effect, was observed for unfilled line objects. These results suggest that the N1 is engaged in enhanced neural representations of figural regions against the background, while P2 is engaged in the individuation of objects with more abstract representations. Furthermore, in recent experiments with the unilateral-probe paradigm, we found a P1 attention-spreading effect for objects in front of other objects, but not for objects in the back of the surroundings. In conclusion, depth cues in three-dimensional world may enable rapid selection or formation of perceptual objects, while two-dimensional forms may require later stages of processing to resolve figure/ground ambiguities in early visual cortices., [Invited], [International presentation]
• Electrophysiological Correlates of Visual Attentional Time Templates for Psychological "Instant" and "Continuance"
  Urushihara, A; Kasai, T
  Asia-Pacific Conference on Vision, 12 Jul. 2015, English, Poster presentation
  Nanyang Executive Centre, NTU, Singapore, Travel award.
  Background: We perceive “instantaneous” events, even though they actually have some amount of physical time. The psychological instant has previously been indicated to occur below 125 ms of duration. The present study explored neural bases of psychological instant and continuance when matching event-durations to attentional templates of duration, by recording event-related potentials (ERPs). Method: EEGs were recorded from 12 healthy participants. Stimuli were 4 geometric shapes (1 target; 3 non-targets) with durations of 83 ms (short) or 133 ms (long), which were sequentially presented with equi-probability and in random order. Inter-stimulus intervals were 900-1200 ms (7 steps). The participants were instructed to respond to the short or long targets in particular blocks. Regarding task relevancy, ERPs in response to the targets and non-targets were classified into two classes, respectively: those with relevant duration or irrelevant duration. The order of to-be-responded durations was counter-balanced across the participants. Results: For the long non-targets, stimuli with relevant duration elicited more positive ERPs than those with irrelevant duration in 330-430 ms post-stimulus at a right parieto-occipital site (PO4). On the other hand, the short targets elicited more negative ERPs when they had relevant duration in 220-340 ms at a left parieto-occipital site (PO3). Discussion: As our knowledge, these results are the first report of ERP manifestations of matching processes of attentional time templates and stimulus durations. Particularly, the ERP relevance effect for long non-targets may reflect pure duration-matching processes because the procedure minimized effects of motor preparation or decision-making processes. Interestingly, the short-duration stimuli did not cause this effect; instead, the relevancy effect was found only for targets. This indicates that the matching of shapes preceded that of duration. In conclusion, the present study shows that the matching processes in working memory are different between psychological instant and continuance.(Travel Award), [International presentation]
• Multiple early processes for task-irrelevant Hiragana strings
  Uno, T; Kasai, T; Okumura, Y
  The 13th Annual Convention of the Japanese Society for Cognitive Psychology, 04 Jul. 2015, Japanese, Poster presentation
  東京大学本郷キャンパス, [Domestic Conference]
• Embodied cognition in mental rotation is more valid in females
  Makinae, S; Kasai, T
  The 13th Annual Convention of the Japanese Society for Cognitive Psychology, 04 Jul. 2015, Japanese, Poster presentation
  東京大学本郷キャンパス, [Domestic Conference]
• Processing specific to letter strings and letters under a restriction on the availability of attention by the presentation rate of letter strings in Japanese Hiragana.
  Uno, T; Okumura, Y; Kasai, T
  Cognitive Neuroscience Society 22nd Annual Meeting, 30 Mar. 2015, English, Oral presentation
  Hyatt Regency Hotel, San Francisco, California, Extensive experience in reading develops specialized neural activities for letter string perception, which is reflected in N170 component of event-related potentials (ERPs). To examine the automaticity of print-tuned processing in Japanese Hiragana, we previously examined ERPs in response to letter and non-letter stimuli when linguistic processing was restricted by rapid stimulus presentation (100 ms duration with 300-600 ms interstimulus interval) and the task that leads attention away from stimuli themselves (discrimination of fixation color), and we observed bilateral N170 for letter strings without typical left lateralization (Okumura et al., 2014, NeuroReport). The present study examined whether the bilateral N170 was due to the difference in proportion of letter- to non-letter stimuli within experimental blocks (i.e., 2:1). ERPs were recorded from 11 native Japanese speakers under the same experimental conditions as those in Okumura et al. (2014), except that each block contained two types of equiprobable stimuli out of three (words, nonwords, and symbols). As a result, during 150-200 ms poststimulus, words and nonwords elicited left-lateralized N170 at occipito-temporal scalp sites, along with a greater negative enhancement for nonwords against words at parietal sites. The results suggest that the number of stimulus types that constitute a sequence affects the amount of attention allocated to two task-irrelevant processes: phonological processing in terms of letter strings and processing specific to individual letters in transparent language., [International presentation]
• Objects unambiguously segregated from the background involves earlier spatial selection.
  Takeya, R; Kasai, T
  Cognitive Neuroscience Society 22nd Annual Meeting, 29 Mar. 2015, English, Oral presentation
  Hyatt Regency Hotel, San Francisco, California, [International presentation]
• 心的回転における身体化認知と男女差
  蒔苗詩歌; 山崎圭子; 河西哲子
  電子情報通信学会ヒューマンコミュニケーション基礎研究会, 18 Mar. 2015, Japanese, Oral presentation
  山代温泉 瑠璃光, [Domestic Conference]
• 心的回転における男女差 ―身体化認知の視点から―
  蒔苗詩歌; 山崎圭子; 河西哲子
  北海道心理学会第61回大会, 30 Nov. 2014, Japanese, Poster presentation
  小樽商科大学札幌サテライト, [Domestic Conference]
• 注意が制約された状況下での文字列特異的誘発反応の検証
  宇野智己; 奥村安寿子; 河西哲子
  北海道心理学会第61回大会, 30 Nov. 2014, Japanese, Poster presentation
  小樽商科大学札幌サテライト, [Domestic Conference]
• A role of visual attention in expert word reading: Implications for the cause of developmental dyslexia
  Okumura, Y; Kasai, T; Murohashi H
  The 17th World Congress of Psychophysiology, 24 Sep. 2014, English, Public symposium
  International Coference Center Hiroshima, [International presentation]
• An event-related potential study on matching processes of numeral classifiers and nouns
  Uno, T; Okumura, Y; Kasai, T
  The 17th World Congress of Psychophysiology, 24 Sep. 2014, English, Poster presentation
  nternational Coference Center Hiroshima, [International presentation]
• 視覚における3 つの空間選択過程と物体
  河西哲子; 竹谷隆司; 田中翔
  日本心理学会第78回大会, 10 Sep. 2014, Japanese, Poster presentation
  同志社大学今出川キャンパス 良心館, [Domestic Conference]
• 心的回転課題における身体化認知の効果 ―粗大協応運動能力との関連 ―
  蒔苗詩歌; 山崎圭子; 河西哲子
  日本認知心理学会第12回大会, 29 Jun. 2014, Japanese, Poster presentation
  仙台国際センター, [Domestic Conference]
• 文字列中の個々に対する空間定位過程検討
  田中愛子; 奥村安寿子; 河西哲子
  日本認知心理学会第12回大会, 29 Jun. 2014, Japanese, Poster presentation
  仙台国際センター, [Domestic Conference]
• 物体構造による注意誘導における性差
  河西哲子; 田中翔; 山田優士
  日本認知心理学会第12回大会, 29 Jun. 2014, Japanese, Oral presentation
  仙台国際センター, [Domestic Conference]
• 名詞と助数の照合処理過程に関する事象連電位を用いた検討
  宇野智己; 奥村安寿子; 河西哲子
  日本認知心理学会第12回大会, 28 Jun. 2014, Japanese, Poster presentation
  仙台国際センター, [Domestic Conference]
• An early electrophysiological response associated with illusory contour processing is reduced by cognitive load
  Takeya, R; Okumura, Y; Kasai, T
  Fourteenth Annual Meeting of the Vision Sciences Society, 19 May 2014, English, Poster presentation
  TradeWinds Island Resorts, St. Pete Beach, USA, Florida, [International presentation]
• 文字列に対する初期の音韻変換処理は刺激への注意を必要とする
  奥村安寿子; 河西哲子; 室橋春光
  「注意と認知」研究会 第12回合宿研究会, 04 Mar. 2014, Japanese, Oral presentation
  [Domestic Conference]
• これからの教育心理学を考える―動物実験、生物学的指標とどのように 付き合うのか？―
  河西哲子
  日本心理学会第77回大会, 20 Sep. 2013, Japanese, Public symposium
  [Domestic Conference]
• 初期視覚処理における文字列の知覚的カテゴリー化―高速提示下における文字列特異的なERP―
  奥村安寿子; 河西哲子; 室橋春光
  日本心理学会第77回大会, 19 Sep. 2013, Japanese, Poster presentation
  [Domestic Conference]
• 線画刺激と塗り刺激における選択的注意―フランカー課題を用いた検討―
  鈴木沙季; 竹谷隆司; 奥村安寿子; 河西哲子
  北海道心理学会第60回大会, 01 Sep. 2013, Japanese, Poster presentation
  研究奨励賞受賞, [Domestic Conference]
• 発達障害と視覚－基礎研究から臨床応用に向けて－自閉症スペクトラムの視覚的注意メカニズム
  河西哲子
  日本視覚学会2013年夏季大会, 24 Jul. 2013, Japanese, Nominated symposium
  札幌市立大学, [Invited], [Domestic Conference]
• Individuals with self-reported ADHD symptoms have a merit in object-based attention : an ERP study in a non-clinical population
  Yamada, Y; Kasai,T; Murohashi, H
  Cognitive Neuroscience Society 20th Annual Meeting, 16 Apr. 2013, English, Oral presentation
  [International presentation]
• Electrophysiological correlates of attention-spreading based on task-irrelevant shape similarity and luminance similarity
  Takeya, R; Kasai, T
  Cognitive Neuroscience Society 20th Annual Meeting, 15 Apr. 2013, English, Oral presentation
  [International presentation]
• Letter-string-specitic N170 broadly distributes under rapid presentation
  Okumura, Y; Kasai, T; Murohashi, H
  Cognitive Neuroscience Society 20th Annual Meeting, 13 Apr. 2013, English, Oral presentation
  San Francisco, USA, [International presentation]
• 視覚的注意における分節化と群化の役割―事象関連電位を用いた検討―
  李旻昊; 河西哲子
  「注意と認知」研究会 第11回合宿研究会, 12 Mar. 2013, Japanese, Oral presentation
  [Domestic Conference]
• 色および形類似性に基づく空間選択
  竹谷隆司; 河西哲子
  「注意と認知」研究会 第11回合宿研究会, 11 Mar. 2013, Japanese, Oral presentation
  [Domestic Conference]
• 高速提示下における文字列特異的なERP反応
  奥村安寿子; 河西哲子; 室橋春光
  「注意と認知」研究会 第11回合宿研究会, 11 Mar. 2013, Japanese, Oral presentation
  [Domestic Conference]
• Effects of Schematic Face on Attention-spreading
  Ding, X; Kasai, T; Takeya, R; Yamada, Y; Yang, F
  電子情報通信学会ヒューマンコミュニケーション基礎研究会, 05 Mar. 2013, English, Oral presentation
  [Domestic Conference]
• 物体ベースの注意拡散に関するヒトの電気生理学的研究
  河西哲子
  YPS（Young Perceptionists' Seminar）, 17 Sep. 2012, Japanese, Invited oral presentation
  北海道大学, [Invited], [Domestic Conference]
• 物体ベースの注意拡散時における処理資源量の検討
  竹谷隆司; 河西哲子
  YPS（Young Perceptionists' Seminar）, 16 Sep. 2012, Japanese, Oral presentation
  定山渓観光ホテル・三渓苑, [Domestic Conference]
• 健常者の注意欠陥多動性障害（ADHD）特性と物体ベースの妨害－事象関連電位（ERP）を用いた検討－
  山田優士; 河西哲子; 室橋春光
  YPS（Young Perceptionists' Seminar）, 16 Sep. 2012, Japanese, Oral presentation
  定山渓観光ホテル・三渓苑, [Domestic Conference]
• 高速提示された文字列に対する単語特異的な初期視覚誘発電位
  奥村安寿子; 河西哲子; 室橋春光
  YPS（Young Perceptionists' Seminar）, 16 Sep. 2012, Japanese, Oral presentation
  定山渓観光ホテル・三渓苑, [Domestic Conference]
• 持続的な視覚的注意への実行機能及び動機付けの関与－事象関連電位を用いた検討－
  山田優士; 河西哲子
  日本心理学会第76回大会, 13 Sep. 2012, Japanese, Poster presentation
  専修大学, [Domestic Conference]
• 文字列に対する空間的注意における語彙性と読み方向の影響
  奥村安寿子; 河西哲子; 竹谷隆司; 室橋春光
  日本心理学会第76回大会, 13 Sep. 2012, Japanese, Poster presentation
  専修大学, [Domestic Conference]
• 物体ベースの空間選択過程は課題に依存する
  竹谷隆司; 河西哲子
  日本心理学会第76回大会, 11 Sep. 2012, Japanese, Poster presentation
  専修大学, [Domestic Conference]
• ERPによる注意・知覚機能の評価：自閉症スペクトラム指数（AQ）を用いた予備的検討
  河西哲子
  第30回日本生理心理学会大会, 03 May 2012, Japanese, Nominated symposium
  北海道大学, [Invited], [Domestic Conference]
• 空間選択的注意の刺激文脈による妨害―領域共通性に関わる注意誘導効果―
  山田優士; 河西哲子; 竹谷隆司; 奥村安寿子
  第30回日本生理心理学会大会, 02 May 2012, Japanese, Poster presentation
  北海道大学, [Domestic Conference]
• 複数の群化要因による独立した注意誘導―事象関連電位による検討―
  竹谷隆司; 河西哲子
  第30回日本生理心理学会大会, 02 May 2012, Japanese, Poster presentation
  北海道大学, [Domestic Conference]
• 語彙性が文字列に対する空間的注意に及ぼす影響
  奥村安寿子; 河西哲子; 竹谷隆司; 室橋春光
  第30回日本生理心理学会大会, 02 May 2012, Japanese, Poster presentation
  北海道大学, [Domestic Conference]
• Stimulus context violates spatial attention: effects of region commonality on attentional selection
  Yamada, Y; Kasai, T; Murohashi, H
  Cognitive Neuroscience Society 2012 Annual Meeting, 02 Apr. 2012, English, Poster presentation
  Chicago, US, [International presentation]
• Feature similarity guides spatial attention regardless of object unity
  Takeya, R; Kasai, T
  Cognitive Neuroscience Society 2012 Annual Meeting, 02 Apr. 2012, English, Poster presentation
  Chicago, US, [International presentation]
• ERP manifestations of knowledge-based attention-spreading: effects of lexicality on attentional selection
  Okumura, Y; Kasai, T; Takeya, R; Murohashi, H
  Cognitive Neuroscience Society 2012 Annual Meeting, 02 Apr. 2012, English, Poster presentation
  Chicago, US, [International presentation]
• 事象関連電位による視覚処理過程の視覚化
  河西哲子
  第9回北海道大学脳科学研究教育センターシンポジウム, 02 Dec. 2011, Japanese, Nominated symposium
  北海道大学, [Invited], [Domestic Conference]
• 物理的連結性と知覚的単一性に基づく注意拡散
  河西哲子; 竹谷隆司
  日本心理学会第75回大会, 17 Sep. 2011, Japanese, Poster presentation
  日本大学, [Domestic Conference]
• 物体記憶の縮小化への符号化時間の影響
  和田義哉; 河西哲子; 室橋春光
  日本心理学会第75回大会, 17 Sep. 2011, Japanese, Poster presentation
  日本大学, [Domestic Conference]
• 顔文字刺激における倒立効果の検討
  日高茂暢; 河西哲子; 室橋春光
  日本心理学会第75回大会, 17 Sep. 2011, Japanese, Poster presentation
  日本大学, [Domestic Conference]
• 対称性と輝度極性による独立した注意拡散
  竹谷隆司; 河西哲子
  日本心理学会第75回大会, 17 Sep. 2011, Japanese, Poster presentation
  日本大学, [Domestic Conference]
• 時間感覚への言語的報酬の効果
  山田優士; 室橋春光; 河西哲子
  日本心理学会第75回大会, 16 Sep. 2011, Japanese, Poster presentation
  日本大学, [Domestic Conference]
• ひらがな文字列の正書法・音韻処理の特性と時間経過
  奥村安寿子; 室橋春光; 河西哲子
  日本心理学会第75回大会, 15 Sep. 2011, Japanese, Poster presentation
  日本大学, [Domestic Conference]
• 選択的注意課題における話者・音韻処理過程の検討―事象関連電位を指標として―
  岩田みちる; 室橋春光; 河西哲子
  日本心理学会第75回大会, 15 Sep. 2011, Japanese, Poster presentation
  日本大学, [Domestic Conference]
• Electrophysiological correlates of attention-spreading for a partly-occluded object
  Kasai, T; Takeya, R
  The 15th Annual Meeting of The Association for the Scientific Study of Consciousness, 11 Jun. 2011, English, Poster presentation
  Kyoto University, [International presentation]
• Far elements guide attention before near elements do
  Takeya, R; Ogihara, A; Kasai, T
  The 15th Annual Meeting of The Association for the Scientific Study of Consciousness, 11 Jun. 2011, English, Poster presentation
  Kyoto University, [International presentation]
• Perceptual load and distractor processing : an event-related potential study
  Tanaka, S; Kasai, T
  29th International Congress of Clinical Neurophysiology, 01 Nov. 2010, English, Poster presentation
  Kobe International Conference Center, [International presentation]
• 課題非関連刺激の処理に関する研究―ERPによる知覚的負荷理論の検討―
  田中翔; 河西哲子
  北海道心理学会第57回大会, 10 Oct. 2010, Japanese, Poster presentation
  札幌国際大学, [Domestic Conference]
• 数計算時の主観的輪郭知覚―ERPを用いた検討―
  竹谷隆司; 河西哲子; 奥村安寿子; 岩田みちる; 足立明夏; 渡辺隼人
  北海道心理学会第57回大会, 10 Oct. 2010, Japanese, Poster presentation
  札幌国際大学, [Domestic Conference]
• 自閉症スペクトラムにおける文脈変化時の意味ネットワーク活性化
  足立明夏; 室橋春光; 河西哲子
  日本心理学会第74回大会, 22 Sep. 2010, Japanese, Poster presentation
  大阪大学, [Domestic Conference]
• 事象関連電位を用いた社会的文脈における表情認知過程の検討
  日高茂暢; 豊巻敦人; 室橋春光; 河西哲子
  日本心理学会第74回大会, 21 Sep. 2010, Japanese, Poster presentation
  大阪大学, [Domestic Conference]
• 課題無関連の特徴類似性は空間的注意を誘導する
  河西哲子; 守谷大樹
  日本心理学会第74回大会, 21 Sep. 2010, Japanese, Poster presentation
  大阪大学, [Domestic Conference]
• 複数話者の日本語母音による音韻変化検出の検討
  岩田みちる; 室橋春光; 河西哲子
  日本心理学会第74回大会, 20 Sep. 2010, Japanese, Poster presentation
  大阪大学, [Domestic Conference]
• 日本人学習者による英語単文における文末後の適合判断
  奥村安寿子; 室橋春光; 河西哲子
  日本心理学会第74回大会, 20 Sep. 2010, Japanese, Poster presentation
  大阪大学, [Domestic Conference]
• 印象形成過程における表情と背景色の処理に関する検討
  日高茂暢; 室橋春光; 河西哲子
  日本心理学会第72回大会, 20 Sep. 2008, Japanese, Poster presentation
  北海道大学, [Domestic Conference]
• 視覚ワーキングメモリにおけるオブジェクトの収縮
  片桐正敏; 河西哲子; 室橋春光
  日本心理学会第72回大会, 19 Sep. 2008, Japanese, Poster presentation
  北海道大学, [Domestic Conference]
• Biased competition based on hierarchical grouping representations in the human visual cortex
  Kasai, T; Moriya, H
  第30回日本神経科学大会, 11 Sep. 2007, English, Oral presentation
  パシフィコ横浜, [International presentation]
• 視覚的群化における注意誘導と刺激誘発電位
  河西哲子
  第25回日本生理心理学会大会, 16 Jul. 2007, Japanese, Poster presentation
  札幌医科大学, [Domestic Conference]
• 感情状態による視覚処理への影響：刺激競合事態における検討
  守谷大樹; 河西哲子; 室橋春光
  第25回日本生理心理学会大会, 15 Jul. 2007, Japanese, Poster presentation
  札幌医科大学, [Domestic Conference]
• 健常成人における自閉症尺度得点による視覚処理特性の違い
  片桐正敏; 河西哲子; 室橋春光
  電子情報通信学会技術研究報告（ヒューマン情報処理）, 28 Jun. 2007, Japanese, Oral presentation
  北海道大学, [Domestic Conference]
• オブジェクトに基づく注意誘導には2段階ある：事象関連脳電位からの証拠
  河西哲子
  電子情報通信学会技術研究報告（ヒューマン情報処理）, 28 Jun. 2007, Japanese, Oral presentation
  北海道大学, [Domestic Conference]
• 感情状態による焦点的注意の変容は情報処理段階で異なるか
  守谷大樹; 河西哲子; 室橋春光
  日本心理学会第70回大会, 04 Nov. 2006, Japanese, Poster presentation
  福岡国際会議場, [Domestic Conference]
• 視覚的群化による注意誘導：持続的注意課題における事象関連電位を用いた検討
  河西哲子
  日本心理学会第70回大会, 04 Nov. 2006, Japanese, Poster presentation
  福岡国際会議場, [Domestic Conference]
• What task requirements cause attentional selection at a level of visual processing after perceptual completion?
  Kasai, T; Kawada, M
  The Forth Asian Conference on Vision, Jul. 2006, English, Poster presentation
  Matsue, Japan, [International presentation]
• 感情状態が初期視覚過程における空間的注意の範囲に及ぼす影響
  守谷大樹; 河西哲子; 室橋春光
  第24回日本生理心理学会大会, 28 May 2006, Japanese, Poster presentation
  広島大学, [Domestic Conference]
• 脳波を指標とした高齢者の課題遂行時における注意・集中について
  豊村洋子; 室橋春光; 河西哲子
  北海道心理学会第52回大会, 30 Oct. 2005, Japanese, Poster presentation
  北海道大学, [Domestic Conference]
• 近空間における初期視覚誘発電位の左右視野非対称性
  河西哲子
  日本心理学会第69回大会, 12 Sep. 2005, Japanese, Poster presentation
  慶応義塾大学, [Domestic Conference]
• 注意シフト関連電位に与える観察距離の影響
  牧孝幸; 河西哲子; 室橋春光
  日本心理学会第69回大会, 10 Sep. 2005, Japanese, Poster presentation
  慶應義塾大学, [Domestic Conference]
• Electrophysiological correlates of attention spreading over connected objects
  Kasai, T; Kondo, M
  European Conference on Visual Perception, 25 Aug. 2005, English, Poster presentation
  A Coruna, Spain, [International presentation]
• 主観的左右判断にかかわる身体方向操作の影響
  牧孝幸; 河西哲子; 室橋春光
  日本心理学会第68回大会, 13 Sep. 2004, Japanese, Poster presentation
  関西大学, [Domestic Conference]
• Attentional Shift Within- and Between-Object in 3D space
  Kasai, T; Kumada, T
  CogSci2004 26th annual meeting, 06 Aug. 2004, English, Poster presentation
  Chicago, US, [International presentation]
• 注意のオブジェクト内利得とオブジェクト間損失：立体視による検討
  河西哲子; 熊田孝恒
  日本心理学会第67回大会, 14 Sep. 2003, Japanese, Poster presentation
  東京大学, [Domestic Conference]
• 動きの方向と速さに対する選択的注意：事象関連電位に関する研究
  野口隆広; 河西哲子; 熊田孝恒; 藤井健; 川嶋弘尚
  日本視覚学会2003年夏季大会, 22 Jul. 2003, Japanese, Poster presentation
  湘南国際村センター, [Domestic Conference]
• 近・遠空間におけるオブジェクトベースの注意効果
  河西哲子; 熊田孝恒
  第１回注意と認知研究会合宿研究会, Feb. 2003, Japanese
  静岡, [Domestic Conference]
• Selection of orientation defined by within- and between- feature dimensions: An ERP study
  Kasai, T; Morita, H; Kumada, T
  First International Workshop on Attention and Cognition, 28 Sep. 2002, English, Oral presentation
  Tokyo, Japan, [International presentation]
• 視覚的補完による単一オブジェクト内の注意移動
  河西哲子; 熊田孝恒
  日本心理学会第66回大会, 26 Sep. 2002, Japanese, Poster presentation
  広島大学, [Domestic Conference]
• Asymmetries of near and far space in early location-based selection: evidence by event-related brain potentials
  Kasai, T; Kumada, T; Katayama, J; Morotomi, T
  The Second Asian Conference on Vision, 22 Jul. 2002, English, Oral presentation
  Gyeongju, Korea, [International presentation]
• Effects of occlusion on within-object shift of attention
  Kasai, T; Kumada, T
  Second Annual Meeting of Vision Sciences Society, 14 May 2002, English, Poster presentation
  Sarasota, Florida, U.S.A., [International presentation]
• 境界の帰属が注意移動に及ぼす効果
  河西哲子; 熊田孝恒
  日本視覚学会2002年冬季大会, 22 Jan. 2002, Japanese, Poster presentation
  工学院大学, [Domestic Conference]
• ADHD児における並列探索時の刺激駆動型注意とトップダウン制御
  河西哲子; 塚原睦子; 片山順一; 長沼睦夫; 諸冨 隆
  日本認知科学会第１８回大会, 08 Jun. 2001, Japanese, Poster presentation
  公立はこだて未来大学, [Domestic Conference]
• Attention to surface and boundary in three-dimensional space: an event-related study
  Kasai, T; Morotomi, T
  First Annual Meeting of Vision Science Society, 07 May 2001, English, Poster presentation
  Sarasota, U.S.A, [International presentation]
• ３次元空間における空間的注意過程のＥＲＰによる検討
  河西哲子; 諸冨 隆
  北海道心理学会第47回大会, 09 Dec. 2000, Japanese
  北海道浅井学園大学, [Domestic Conference]
• 両眼視差による位置と形状への選択的注意時のＥＲＰ
  河西哲子; 諸冨 隆
  日本心理学会第64回大会, 06 Nov. 2000, Japanese, Poster presentation
  京都大学, [Domestic Conference]
• 奥行きへの注意に関連する事象関連脳電位成分
  河西哲子; 諸冨 隆
  日本視覚学会2000年夏季大会, 27 Jul. 2000, Japanese, Poster presentation
  河口湖畔サニーデビレッジ, [Domestic Conference]
• 奥行き及び形に注意時の視覚誘発反応―課題解決過程としての視知覚と視覚誘発電位―
  河西哲子
  第18回生理心理学会学術大会, Jun. 2000, Japanese, Nominated symposium
  北海道大学, [Domestic Conference]
• 選択的注意時のＥＲＰを指標とする両眼立体視過程の検討
  河西哲子; 諸冨 隆
  第18回生理心理学会学術大会, Jun. 2000, Japanese, Poster presentation
  北海道大学, [Domestic Conference]
• Event-related brain potential study of selective attention to conjunction of depth and location
  Kasai, T; Morotomi, T
  Fourth Annual Vision Research Conference, 28 Apr. 2000, English, Poster presentation
  Fort Lauderdale, U.S.A., [International presentation]
• 3次元位置への視覚選択的注意がERPに及ぼす影響
  河西哲子; 諸冨 隆
  日本視覚学会2000年冬季大会, 26 Jan. 2000, Japanese, Poster presentation
  工学院大学, [Domestic Conference]
• 線運動錯視における空間的注意と運動印象： ERPによる検討
  河西哲子; 諸冨 隆
  日本心理学会第63回大会, 05 Sep. 1999, Japanese, Poster presentation
  中京大学, [Domestic Conference]
• 線運動錯視における空間的注意の移動：ERPによる検討
  河西哲子; 沼澤哲也; 諸冨 隆
  第17回日本生理心理学会学術大会, May 1999, Japanese, Poster presentation
  東北大学, [Domestic Conference]
• 両眼立体視時の誘発電位に対する選択的注意の効果
  河西哲子; 諸冨 隆
  日本視覚学会1999年冬季大会, 27 Jan. 1999, Japanese, Poster presentation
  工学院大学, [Domestic Conference]
• 視覚パタンマスキングへの刺激の奥行き位置の効果
  河西哲子; 諸冨 隆
  北海道心理学会第45回大会, 08 Nov. 1998, Japanese
  札幌学院大学, [Domestic Conference]
• 視覚パタンマスキングにおける検査刺激及びマスク刺激の相対的奥行き位置の効果
  河西哲子; 諸冨 隆
  日本心理学会第62回大会, 10 Oct. 1998, Japanese, Poster presentation
  東京學藝大學, [Domestic Conference]
• 視覚誘発電位による立体視パタンマスキングの検討
  河西哲子; 諸冨 隆
  第16回日本生理心理学会学術大会, May 1998, Japanese, Poster presentation
  文京女子大学本郷キャンパス, [Domestic Conference]
• 検査刺激の見えに及ぼすマスク刺激の相対的奥行き位置の効果
  河西哲子; 諸冨 隆
  日本心理学会第61回大会, 18 Sep. 1997, Japanese, Poster presentation
  関西学院大学, [Domestic Conference]

• 障害・臨床心理学調査実験Ⅰ, 2024年, 修士課程, 教．学院
• 大学院共通授業科目（教育プログラム）：脳科学研究の展開, 2024年, 修士課程, 大学院共通科目
• 障害・臨床心理学調査実験Ⅱ, 2024年, 修士課程, 教．学院
• 教育心理特論, 2024年, 修士課程, 教育学院
• 障害・臨床心理学調査実験Ⅲ, 2024年, 修士課程, 教．学院
• 発達障害特論, 2024年, 修士課程, 教育学院
• 障害・臨床心理学調査実験Ⅳ, 2024年, 修士課程, 教．学院
• 教育心理学講義（1単位）, 2024年, 学士課程, 教育学部
• 歴史・文化モジュール特殊科目A, 2024年, 学士課程, 現代日本学プログラム課程
• 教育心理学講義, 2024年, 学士課程, 教育学部
• 卒業論文, 2024年, 学士課程, 教育学部
• 専門演習, 2024年, 学士課程, 教育学部
• 教育心理学実験実習, 2024年, 学士課程, 教育学部
• 教育心理学講義, 2024年, 学士課程, 教育学部
• 歴史・文化モジュール特殊科目B, 2024年, 学士課程, 現代日本学プログラム課程
• 科学・技術の世界, 2024年, 学士課程, 全学教育
• 教育心理学実験実習（1単位）, 2024年, 学士課程, 教育学部
• 教育心理学実験実習（1単位）, 2024年, 学士課程, 教育学部
• 教育心理学講義（1単位）, 2024年, 学士課程, 教育学部
• 歴史・文化モジュール特殊科目A, 2024年, 学士課程, 現代日本学プログラム課程

• Cognitive Neuroscience Society
• Psychonomic Society
• HOKKAIDO PSYCHOLOGICAL SOCIETY
• 日本認知心理学会
• 日本生理心理学会
• 日本心理学会

• Characteristics of developmental disorders revealed by analyzing noise-induced EEG dynamics
  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)
  Jun. 2019 - Mar. 2021
  Kitajo Keiichi
  We developed an experimental paradigm to investigate the relationship between the consistency in electroencephalographic (EEG) responses to repeatedly presented visual noise and developmental disability. We conducted EEG experiments and analyzed the obtained data. We developed a dual-task paradigm to control the attentional state and arousal level. We used questionnaires to measure the traits of autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD) in healthy individuals. We explored the relationship between the degree of EEG consistency and these psychological traits. Although we need more data, we succeed in developing a novel experimental paradigm to assess the relationship between the psychological traits and noise-induced EEG dynamics.
  Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Research (Exploratory), National Institute for Physiological Sciences, 19K22900
• Mechanisms of attention selection based on perceptual organization and individual differences
  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
  Apr. 2016 - Mar. 2020
  Kasai Tetsuko
  Fragmentary sensory inputs are organized according to stimulus and knowledge factors,and forming figure region (object) from the background is fundamental for cognition. This research obtained findings regarding its basic mechanisms and individual differences as follows.
  1. Multiple stages of processing regarding three aspects of perceptual organization (visual grouping by feature similarity, object based on learning such as letter, letter-string, visual word, and figure enhancement with subjective contours) were visualized by event-related potential and the stages on which attention operates were specified.
  2. In the above investigations, some processes were found to vary with the extent of symptoms of autism-spectrum disorders (ASD), attention-deficit hyperactivity disorders (ADHD), and sex in healthy participants.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 16K00199
• Examinations of vulnerability and resiliency in developmental disabilities and the development in methods of individual support for them
  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
  Apr. 2011 - Mar. 2015
  MUROHASHI Harumitsu; KASAI Tetsuko; MASATAKA Nobuo; TOYOMAKI Atsuhito; MAMIYA Masayuki; MATSUDA Yasuko; YAGYU Kazuyori; ADACHI Jun; SAITO Masayoshi; MATSUMOTO Toshiharu; TERAO Atsushi
  Developmental disorders have biological bases and are influenced from social circumstances. Their developmental courses are not typical, and children and adults with them have various cognitive and behavioral problems. In this study, several neuro-cognitive measurements were performed, and some investigations for QOL and traits of developmental disorders were carried out.
  Dorsolateral functions in visual processes, executive functions and working memory are supposed as common mechanisms for resiliency and vulnerability of the disorders. Event-related potentials, eye movements, etc. were measured and analyzed. Their results contributed to develop methods for support of children with them in reading and writing and so on. Improvements in supporting methods for adolescents with them and their parents were performed by suggestions from evaluative differences between their results for their QOL and the traits.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 23330269
• Analyses of activation-spreading in visual cortex as an index of visual information processing
  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
  2011 - 2013
  KASAI Tetsuko
  It is known that, when attention is directed toward a particular location, attention tends to spread over a whole object/group region that includes the location.The present study examined attention-spreading for emerging objects, by using event-related brain potentials with a high temporal resolution of brain activities. According to results in several experiments, we identified three attention processes: attention-spreading for groups represented as figures against the background at around 150 ms post-stimulus, selection of parsing objects at around 250 ms, and an interaction process between top-down attention and attention-spreading at around 350 ms. We also found that these processes have systematic individual differences.
  Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 23500320
• 事象関連電位を用いた3次元空間におけるオブジェクトに基づく注意の脳内機構の研究
  科学研究費補助金(若手研究(B))
  Apr. 2004 - Mar. 2007
  河西 哲子
  平成18年度は,注意が作用するオブジェクトの表象レベルについて,行動指標と事象関連電位(ERP)を用いて検討した.(1)先行手がかり法における反応時間を指標として,部分的遮蔽により作成した視覚オブジェクト上の注意拡散時間を検討した,一連の実験の結果より,注意選択は課題の難易度が高い場合には知覚的補完後の高次のオブジェクト表象に基づくが,一方課題の難易度が低い場合には特徴値の不連続により定義されるより低次のオブジェクト表象に基づくことが示された.(2)視覚皮質における注意の布置をms単位で調べることの出来るERPを用いて,注意が視覚オブジェクト上を拡散する過程を検討した.刺激を左右の視野の両側に同時に呈示し,その片方に持続的に注意するERPパラダイムにおいて,刺激の左右対称性を統制し,刺激の連結による群化の影響を調べた.その結果,均一な連結における連結の程度を比較した実験と,均一な連結と不均一な連結を比べた実験の両方において,2段階の注意拡散過程を同定した.早い時間帯(N1,刺激呈示後150-210ms)では,群化の程度が高くなるにつれて注意は注意すべき空間位置の反対側に誘導されたが,遅い時間帯(late N2pc,約300-400ms)では,群化の程度に関わらず連結によって誘導された.この結果は,視覚オブジェクトには低次と高次の表象レベルがあり,対応する階層的な処理長那皆の各...
  文部科学省, 若手研究(B), 北海道大学, Principal investigator, Competitive research funding, 16700246
• Analysis of cognitive and learning processes for circumstances / stimuli and development of support methods of learning according with the cognitive traits in children with mildly developmental disabilities
  Grants-in-Aid for Scientific Research(基盤研究(B))
  Apr. 2004 - Mar. 2007
  Harumitsu MUROHASHI; 田中 康雄; 田村 守; 諸冨 隆; 片山 順一; 河西 哲子
  This research was performed to analyze cognitive and learning processes and develop the support methods of learning for children with mildly developmental disabilities. Analysis of the processes and some development of the methods were performed as follows,(1)analysis of the processes for visual stimulus change (2)analysis for perceptual and cognitive processes of autism, especially for weak central coherence (3)analysis for perceptual and cognitive processes of learning disabilities, especially analysis of perceptual mechanism of consonants and vowels in English (4)analysis for perceptual ...
  Ministry of Education, Culture, Sports, Science and Technology, 基盤研究(B), 北海道大学, Coinvestigator not use grants, Competitive research funding, 16330185