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State-space remodeling in basal ganglia

Research Project

Project/Area Number 24700200
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Perception information processing/Intelligent robotics
Research InstitutionNational Defense Medical College

Principal Investigator

OHTA Hiroyuki  防衛医科大学校(医学教育部医学科進学課程及び専門課程、動物実験施設、共同利用研究, 医学教育部医学科専門課程, 助教 (20535190)

Project Period (FY) 2012-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords強化学習 / 大脳基底核 / 線条体 / オプトジェネティクス / 側抑制
Outline of Final Research Achievements

The striatum neurons showed a residual firing response of slowly increasing duration when exposed to repetitive optogenetic photostimulation. The prolonged firing resumed after a 20 sec intermission. Residual depolarization with 8-sec half-life decay and firing prolongation by the repetitive photostimulation were observed through whole-cell patch clamp recordings. Our results indicate that striatal neurons hold their internal state in second-order timescale to count inputs cumulatively. Moreover, we proposed a new reinforcement learning model which was inspired by the prolonged firing.

Report

(3 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • Research Products

    (7 results)

All 2014 2013 2012 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (5 results)

  • [Journal Article] Multilayered neural network with structural lateral inhibition for incremental learning and conceptualization2014

    • Author(s)
      Daisuke Uragami, Hiroyuki Ohta
    • Journal Title

      BioSystems

      Volume: 118 Pages: 8-16

    • DOI

      10.1016/j.biosystems.2014.01.006

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Paired stimulation between CA3 and CA1 alters excitability of CA3 in the rat hippocampus.2013

    • Author(s)
      Ohta H, Sakai S, Ito S, Ishizuka T, Fukazawa y Kemuriyama T, Tandai-Hiruma M, Mushiake H, Sato Y, Yawo H, Nishida Y
    • Journal Title

      Neuroscience Letters

      Volume: 534 Pages: 182-187

    • DOI

      10.1016/j.neulet.2012.11.058

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] 大脳基底核線条体の持続的応答の空間的解析2013

    • Author(s)
      太田宏之,守本祐司,西田育弘
    • Organizer
      レーザー学会第452回研究会
    • Place of Presentation
      東京
    • Related Report
      2013 Annual Research Report
  • [Presentation] 線条体における持続的発火の成長と初期化2013

    • Author(s)
      太田宏之, 山口良哉, 西田育弘
    • Organizer
      第90回日本生理学会大会
    • Place of Presentation
      東京
    • Related Report
      2012 Research-status Report
  • [Presentation] Presynaptic inhibition balances the trade-off between differential sensitivity and reproducibility2012

    • Author(s)
      Hiroyuki Ohta, Daisuke Uragami, Yasuhiro Nishida and James C. Houk
    • Organizer
      The 6th International Conference on Soft Computing and Intelligent Systems and The 13th International Symposium on Advanced Intelligent Systems (SCIS&ISIS2012)
    • Place of Presentation
      神戸
    • Related Report
      2012 Research-status Report
  • [Presentation] 大脳皮質-線条体間伝達の光による操作と計測2012

    • Author(s)
      太田 宏之,守本 祐司,山口 良哉,萩沢 康介,八尾 寛,西田 育弘
    • Organizer
      レーザー学会 第437回研究会報告
    • Place of Presentation
      東京
    • Related Report
      2012 Research-status Report
  • [Presentation] 神経可塑性と状態の生成

    • Author(s)
      太田宏之, 西田育弘
    • Organizer
      第27回人工知能学会全国大会
    • Place of Presentation
      富山
    • Related Report
      2013 Annual Research Report

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Published: 2013-05-31   Modified: 2019-07-29  

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