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Neural substrate of model-based action selection

Research Project

Project/Area Number 20K23339
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 1002:Human informatics, applied informatics and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Funamizu Akihiro  東京大学, 定量生命科学研究所, 講師 (20724397)

Project Period (FY) 2020-09-11 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords強化学習 / 機械学習 / マウス / 光遺伝学 / 光計測
Outline of Research at the Start

ヒトや動物の脳は,過去の経験から習慣的に行動を決めるだけではない.与えられた感覚情報と経験から,現在の状況を推定し,目的志向的に柔軟に行動を決定する.本研究は,この目的志向行動の神経基盤をマウスで解明する.なお,工学分野では,習慣行動と目的志向行動はそれぞれ,モデルフリーとモデルベース行動に明確に区別される.本研究は,モデルベース行動を精査できるマウスの行動実験を,理論に基づいて構築する.この行動実験時のマウスで,脳の神経活動を光計測・光操作し,目的を達成する.本研究は,脳の計算機構の解明を目指している.本研究の先には,脳のように柔軟に学習できる人工知能の開発がある.

Outline of Final Research Achievements

Humans and animals decide behavior not only based on past experiences (i.e., habit), but also make choices by estimating a current context from sensory inputs and experiences. This context-dependent complex behavior is known as a goal-directed behavior. To investigate the neural substrate of goal-directed behavior, our study proposed a context-estimation behavioral task in mice. During the task, we opto-genetically inactivated the neural activity of mouse dorsal cortex, and found that the anterior lateral motor cortex (ALM) was involved in selecting the left or right spout.

Academic Significance and Societal Importance of the Research Achievements

本研究は,ヒトや動物の習慣的・本能的な行動ではなく,目的志向の複雑な行動選択時の脳機能をマウスで検証した.本研究は,まず,最先端の遺伝子改変技術を活用できるマウスで,目的志向行動の神経基盤を検証可能なことを示す.今後の詳細な神経基盤解明につながる.また,本研究は,前外側運動皮質の行動選択への寄与を確認した.本研究は将来,脳の意思決定機構を反映した脳型人工知能の構築や,意思決定に変調を伴う脳疾患の基礎的理解につながる.

Report

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

    (8 results)

All 2022 2021 2020 Other

All Journal Article (2 results) (of which Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Remarks (1 results)

  • [Journal Article] 計算論で読み解く意思決定の神経基盤2021

    • Author(s)
      船水章大
    • Journal Title

      中学医学社・Clinical Neuroscience - (商業誌)

      Volume: 39 Pages: 937-942

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Neural Substrate and Computation for Perceptual Decision Making2020

    • Author(s)
      Funamizu Akihiro
    • Journal Title

      The Brain & Neural Networks

      Volume: 27 Issue: 3-4 Pages: 165-173

    • DOI

      10.3902/jnns.27.165

    • NAID

      130007966440

    • ISSN
      1340-766X, 1883-0455
    • Year and Date
      2020-12-05
    • Related Report
      2020 Research-status Report
    • Open Access
  • [Presentation] 知覚意思決定における大脳新皮質の情報表現と発信2022

    • Author(s)
      船水章大
    • Organizer
      これからの神経回路研究の会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 大脳新皮質における感覚情報と事前知識の統合2021

    • Author(s)
      船水章大
    • Organizer
      神戸大学医学研究科薬理学分野
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Integration of sensory inputs and prior knowledge in the cerebral cortex2021

    • Author(s)
      Akihiro Funamizu
    • Organizer
      IRCN science salon, University of Tokyo
    • Related Report
      2021 Annual Research Report
  • [Presentation] 知覚意思決定における聴覚野の情報表現と情報発信2020

    • Author(s)
      Akihiro Funamizu, Fred Marbach, Anthony M Zador
    • Organizer
      日本神経科学大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Encoding and decoding of auditory cortex during perceptual decision making2020

    • Author(s)
      Akihiro Funamizu, Fred Marbach, Anthony M Zador
    • Organizer
      International Symposium on Artificial Intelligence and Brain Science
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Remarks] 研究者の主催する研究室のホームページ

    • URL

      https://www.iqb.u-tokyo.ac.jp/lab/funamizu/

    • Related Report
      2021 Annual Research Report

URL: 

Published: 2020-09-29   Modified: 2023-01-30  

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