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Dynamic communication between hippocampus and prefrontal cortex by disinhibitory regulation

Research Project

Project/Area Number 18K15343
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 51010:Basic brain sciences-related
Research InstitutionKansai Medical University

Principal Investigator

KURIKAWA Tomoki  関西医科大学, 医学部, 助教 (20741333)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords領野間通信 / 局所神経回路 / 力学系 / 再帰型ニューラルネットワーク / 動的通信 / 同期現象 / アセチルコリン / flexible communication / 海馬
Outline of Final Research Achievements

Dynamic communication between cortical areas in a neural system gathers attention recently. Here, dynamics communication refers to change in frequency and amplitude of coherence between the cortical areas depending on the cognitive demands, e.g., encoding, and decoding. In our project, we tried how such dynamic communication is implemented in the neural system.
Specifically, 1) We proposed dis-inhibitory system to the dynamic communication in Hippocampus-entorhinal cortices for spatial working memory task. 2) We built a simple neural network model to understand behaviors of the neural system and analyzed it from the viewpoint of the dynamical systems theory and found clear relation between effective dimensions of the neural dynamics and memory performance. 3) We showed that dis-inbitory circuit in hippocampus-medial prefrontal cortex can modulate the communication between them.

Academic Significance and Societal Importance of the Research Achievements

本研究課題により、神経系の動的な通信がどのように起きているのかという点が明らかになりつつある。神経系、ひいては動物が状況に応じてどのように情報処理の様式を適宜変化させるのかは、重要であるにもかかわらず、まだまだ不明な点が多い。本研究による、脱抑制による制御という観点でのアプローチはその一つの答えとして、有望である。また領野間の同期現象は様々な神経疾患とか変わっている。したがってこの機序を解明することは学術的な重要性に加えて、現在クローズアップされている神経疾患の理解・治療にもつながる社会的に大きな意義をもつと考えている。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (4 results)

All 2020 2019 Other

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

  • [Int'l Joint Research] Technion-Israeli Institute of Technology(イスラエル)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Repeated sequential learning increases memory capacity via effective decorrelation in a recurrent neural network2020

    • Author(s)
      Tomoki Kurikawa, Omri Barak, Kunihiko Kaneko
    • Journal Title

      Physical review research

      Volume: -

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Oscillation-driven memory encoding, maintenance and recall in an entorhinal-hippocampal circuit model2019

    • Author(s)
      Tomoki Kurikawa, Kenji Mizuseki, Tomoki Fukai
    • Journal Title

      bioRxiv

      Volume: 804062

    • Related Report
      2019 Annual Research Report
    • Open Access
  • [Presentation] Robust and flexible sequential activities in a multiple timescale neural network2019

    • Author(s)
      Tomoki Kurikawa
    • Organizer
      10th Dynamic Days Asia Pacific (DDAP10)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited

URL: 

Published: 2018-04-23   Modified: 2021-02-19  

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