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Elucidating the involvement of the claustrum in cortical slow wave and memory consolidation

Research Project

Project/Area Number 19K06964
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 46030:Function of nervous system-related
Research InstitutionToho University (2020-2021)
Institute of Physical and Chemical Research (2019)

Principal Investigator

NARIKIYO Kimiya  東邦大学, 医学部, 助教 (70599836)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords前障 / 大脳皮質 / 徐波 / 睡眠 / 記憶 / 固定化 / 海馬 / Sharp Wave Ripple
Outline of Research at the Start

前障は広範な大脳皮質領域と双方向の神経投射をもつ特異な神経核である。この特徴から長らく注目されてきたが、その機能については未だ多くが謎のままである。申請者らのこれまでの研究で、前障ニューロンの多くは睡眠時に活動が高く、特に大脳皮質の徐波の発生と密接に関係していることが明らかとなった。これは前障が広範な大脳皮質の徐波を制御していることを示唆するが、これがどのような生理学的機能を担っているのかは不明である。本研究ではこの前障による徐波活動が大脳皮質への記憶固定化を担うと仮説を立て、その神経回路メカニズムと機能を電気生理学手法と光遺伝学などの遺伝学的手法を用いて検証する。

Outline of Final Research Achievements

The claustrum is a sheet-like neural structure that exists in the deep cerebral cortex of mammals, including humans, and is characterized by its bidirectional projections to almost all cortical regions. This feature suggests that the claustrum is involved in the activity of a wide range of cortical regions, but its actual function is not well understood. In this study, we focused on "slow waves," which are electroencephalogram seen throughout the cortical regions during non-REM sleep, and investigated their relationship to the claustrum in mice. Using genetic and electrophysiological techniques, we examined the causal relationship between the activity of claustral neurons and the generation of slow waves in the cerebral cortex, and clarified that the claustrum is involved in the coordination of slow waves in the cerebral cortex.

Academic Significance and Societal Importance of the Research Achievements

本研究は、大脳皮質徐波の制御という前障の新たな機能を明らかにするとともに、これまで大脳皮質と視床を中心に考えられてきた徐波生成の神経基盤に、前障という新たな要素を提示する。本研究の成果により、前障の機能と徐波の神経メカニズムの双方の解明が進むことが期待される。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (6 results)

All 2021 2020 2019 Other

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (4 results) Remarks (1 results)

  • [Journal Article] The claustrum coordinates cortical slow-wave activity2020

    • Author(s)
      Narikiyo Kimiya、Mizuguchi Rumiko、Ajima Ayako、Shiozaki Momoko、Hamanaka Hiroki、Johansen Joshua P.、Mori Kensaku、Yoshihara Yoshihiro
    • Journal Title

      Nature Neuroscience

      Volume: - Issue: 6 Pages: 741-753

    • DOI

      10.1038/s41593-020-0625-7

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 前障と睡眠脳波2021

    • Author(s)
      成清公弥
    • Organizer
      日本睡眠学会第46回定期学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Tackling the mystery of sleep slow waves from the claustrum2021

    • Author(s)
      Kimiya Narikiyo
    • Organizer
      The Annual Meeting of The Japanese Association of Anatomists / The Physiological Society of Japan.
    • Related Report
      2020 Research-status Report
  • [Presentation] The claustrum: a novel key player in slow wave coordination2020

    • Author(s)
      Kimiya Narikiyo, Yoshihiro Yoshihara
    • Organizer
      The 43nd Annual Meeting of the Japan Neuroscience Society
    • Related Report
      2020 Research-status Report
  • [Presentation] Involvement of the claustrum in neocortical slow-wave activity.2019

    • Author(s)
      Kimiya Narikiyo, Momoko Shiozak, Yoshihiro Yoshihara
    • Organizer
      NEURO2019
    • Related Report
      2019 Research-status Report
  • [Remarks] 未踏の脳領域「前障」の機能を解明

    • URL

      https://www.riken.jp/press/2020/20200512_1/index.html

    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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