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Predictive motor signals propagating to others beyond individual brain

Research Project

Project/Area Number 20K20860
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 10:Psychology and related fields
Research InstitutionKyoto University

Principal Investigator

Mizuhara Hiroaki  京都大学, 情報学研究科, 准教授 (30392137)

Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2021: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords自他分離 / コミュニケーション / 脳波 / 自己主体感 / 遠心性コピー / 事象関連電位 / 感覚減衰 / 運動主体感 / トップダウン / ボトムアップ / 運動予測 / ハイパースキャン / 社会脳
Outline of Research at the Start

本研究は「自分は誰なのか?なぜ他人は自分ではないのか?」という人間としての根源を成す哲学的な問いに,脳神経科学の立場から挑戦する研究課題である.特に,自己と他者の認識(自他分離)を実現する脳メカニズムの最有力候補として考えられている「運動指令の遠心性コピー」に焦点をあてて,その真偽を検証することで自他分離の脳メカニズム解明をおこなう.このために人間を対象とした頭皮脳波計測実験を行う.特に本研究では,2名の被験者の脳波の同時記録を実施することで,自他分離を実現すると考えられている「運動指令の遠心性コピー」が真に自他分離を実現しているかを検証する.

Outline of Final Research Achievements

Motor prediction by an efference copy of motor signals has been suggested as a promising candidate for the brain mechanism that realises the recognition of self and others ('self and others segregation'). To investigate the existence of a top-down influence on motor prediction as well as the efference copy, we measured EEG during a sensory attenuation task in which romantic dyads were asked to hold their hands. The results showed that holding hands with a partner showed a sensory attenuation effect, especially in female participants. This suggests the existence of context-dependent top-down signals for motor prediction as well as the efference copy.

Academic Significance and Societal Importance of the Research Achievements

自他分離を実現する脳メカニズムを研究する際に,感覚減衰パラダイムが頻繁に用いられている.この感覚減衰は運動指令の遠心性コピーにより実現されると考えられているが,二人一組で参加した被験者の個体を超えて感覚減衰が発生するとすれば,単純に遠心性コピーにより感覚減衰が発生するものではないことになる.そこで,より高次の文脈依存的なトップダウン信号によっても運動予測を実現しているかを検証した.このことは,今後,自他分離に関するさらになる研究を実施する際に感覚減衰パラダイムを用いることの正当性に関する知見を提供するものである.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (11 results)

All 2023 2022 2021 Other

All Int'l Joint Research (4 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (3 results) Book (1 results)

  • [Int'l Joint Research] University of Glasgow(英国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Charite Universitatsmedizin(ドイツ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] University of Glasgow(英国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Charite Universitatsmedizin(ドイツ)

    • Related Report
      2020 Research-status Report
  • [Journal Article] The effect of productive vocabulary knowledge on second language comprehension2023

    • Author(s)
      Takara K. Allal-Sumoto, Kiyofumi Miyoshi, Hiroaki Mizuhara
    • Journal Title

      Frontiers in Psychology

      Volume: 14

    • DOI

      10.3389/fpsyg.2023.1049885

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Role of Temporal Contingency and Integrity of Visual Inputs in the Sense of Agency: A Psychophysical Study2021

    • Author(s)
      Mizuhara Hiroaki、Uhlhaas Peter
    • Journal Title

      Frontiers in Psychology

      Volume: 12 Pages: 635202-635202

    • DOI

      10.3389/fpsyg.2021.635202

    • NAID

      120007033614

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Frequency-dependent cortical interactions during semantic processing: an electrocorticogram cross-spectrum analysis using a semantic space model.2021

    • Author(s)
      Sato N, Matsumoto R, Shimotake A, Matsuhashi M, Otani M, Kikuchi T, Kunieda T, Mizuhara H, Miyamoto S, Takahashi T, Ikeda A.
    • Journal Title

      Cereb Cortex

      Volume: in press Issue: 9 Pages: 4329-4339

    • DOI

      10.1093/cercor/bhab089

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 第二言語における語彙理解産出知識の相互作用が理解処理に及ぼす影響:心理学的研究2022

    • Author(s)
      アラル須本 ケンザ宝, 水原 啓暁
    • Organizer
      Neuro2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Spatiotemporal Reconstruction Accuracies of M/EEG Inverse Solution Models2022

    • Author(s)
      Duygu Sahin, Hiroaki Mizuhara
    • Organizer
      Neuro2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Neural oscillations: Toward a unified understanding of "communication"2022

    • Author(s)
      Mizuhara H
    • Organizer
      第99回日本生理学会大会
    • Related Report
      2021 Research-status Report
  • [Book] 有斐閣 現代心理学辞典2021

    • Author(s)
      子安 増生、丹野 義彦、箱田 裕司
    • Total Pages
      1002
    • Publisher
      有斐閣
    • ISBN
      9784641002661
    • Related Report
      2020 Research-status Report

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Published: 2020-08-03   Modified: 2024-01-30  

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