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Investigation and modeling of neural mechanism of context prediction

Research Project

Project/Area Number 26730124
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Intelligent informatics
Research InstitutionOkinawa Institute of Science and Technology Graduate University

Principal Investigator

FUNAMIZU Akihiro  沖縄科学技術大学院大学, 神経計算ユニット, 研究員 (20724397)

Research Collaborator KUHN Bernd  沖縄科学技術大学院大学, 光学ニューロイメージングユニット, 准教授 (90599557)
Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsベイズ推定 / 大脳新皮質 / 二光子顕微鏡 / 頭頂葉 / 強化学習 / 神経科学 / 脳科学 / 計算論 / 皮質
Outline of Final Research Achievements

This study proposed a hypothesis that neocortex employs Bayesian inference to predict current context. Bayesian inference is widely used in robotics and information science for context prediction. This hypothesis was published as a review paper. Neocortex has a six-layered column structure. Our Bayesian hypothesis proposed that cortical layers 1, 2/3, and 5 implement prior, likelihood, and posterior in the Bayesian inference, respectively. Top-down signals from other cortical areas or thalamus send prediction of future state (state transition), while bottom-up signals send sensory inputs to a cortical column. We tested our Bayesian-cortex hypothesis with mice using a behavioral training and two-photon microscopy which imaged population neuronal activity of posterior parietal cortex.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • Research Products

    (9 results)

All 2015 2014

All Journal Article (2 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results)

  • [Journal Article] 予測―大脳新皮質のベイジアンフィルタ仮説2015

    • Author(s)
      船水章大,銅谷賢治
    • Journal Title

      生体の科学

      Volume: 66 Pages: 33-37

    • Related Report
      2014 Research-status Report
  • [Journal Article] Condition interference in rats performing a choice task with switched variable- and fixed-reward conditions.2015

    • Author(s)
      Funamizu A., Ito M., Doya K., Kanzaki R.,Takahashi H.
    • Journal Title

      Frontiers in Neuroscience

      Volume: 9 Pages: 27-27

    • DOI

      10.3389/fnins.2015.00027

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Neural substrate of Bayesian dynamic filter in posterior parietal cortex2015

    • Author(s)
      Funamizu A
    • Organizer
      International symposium on Prediction and Decision making
    • Place of Presentation
      Tokyo
    • Year and Date
      2015-11-01
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Action-dependent state prediction in mouse posterior parietal cortex during an auditory virtual navigation task2015

    • Author(s)
      Funamizu A, Kuhn B, Doya K
    • Organizer
      Society for Neuroscience 2015
    • Place of Presentation
      Chicago, USA
    • Year and Date
      2015-10-17
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Investigating neural implementation of model-based decision making by two-photon microscopy2015

    • Author(s)
      Funamizu A
    • Organizer
      The 6th FAONS Congress
    • Place of Presentation
      Tongxiang, China
    • Year and Date
      2015-09-22
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Action-dependent state prediction in mouse parietal cortex during an auditory virtual navigation task2015

    • Author(s)
      Funamizu A, Kuhn B, Doya K
    • Organizer
      第38回日本神経科学大会
    • Place of Presentation
      神戸
    • Year and Date
      2015-07-29
    • Related Report
      2015 Annual Research Report
  • [Presentation] 後頭頂葉におけるモデルベース意思決定時の神経表現2015

    • Author(s)
      船水章大, Bernd Kuhn, 銅谷賢治
    • Organizer
      第54回生体医工学大会
    • Place of Presentation
      名古屋
    • Year and Date
      2015-05-07
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] Imaging action-dependent state prediction in mouse parietal cortex.2015

    • Author(s)
      Akihiro Funamizu, Bernd Kuhn, Kenji Doya
    • Organizer
      FENS-Hertie Winter School “The neuroscience of decision making”
    • Place of Presentation
      Obergurgl, Austria
    • Year and Date
      2015-01-11
    • Related Report
      2014 Research-status Report
  • [Presentation] Imaging action-dependent state prediction in mouse posterior parietal cortex.2014

    • Author(s)
      Akihiro Funamizu, Bernd Kuhn, Kenji Doya
    • Organizer
      2014年包括脳冬のシンポジウム
    • Place of Presentation
      東京
    • Year and Date
      2014-12-11
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2017-05-10  

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