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Physiology of Hippocampal Memory Engram

Research Project

Project/Area Number 17K13272
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Basic / Social brain science
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Tanaka Kazumasa  国立研究開発法人理化学研究所, 脳神経科学研究センター, 基礎科学特別研究員 (10772650)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Keywords海馬 / 記憶痕跡 / 場所細胞 / 最初期遺伝子 / 文脈記憶
Outline of Final Research Achievements

The hippocampus is essential for episodic memory. Recently, researchers have revealed a subset of hippocampal neurons established during memory formation encodes a specific memory (memory engram). However, it was still unknown how these neurons are modified and how they support memory.
To address this question, we recorded from individual hippocampal neurons while mice are freely moving. We identified an unique pattern of activity in memory engram during memory formation, and also revealed a type of information these specific neurons encode.
Our finding has advanced our understanding on memory formation and recall.

Academic Significance and Societal Importance of the Research Achievements

私達動物の脳がどのように記憶を保存し、そして利用しているのかは現代神経科学の大きな謎である。近年の技術的な進歩により、一つ一つの記憶に関わる神経細胞群がどれなのかを見つけることが可能になった。本研究では、記憶について特に重要な役割を果たしていることが知られる海馬で、こうした神経細胞群が一体どのような情報を保存しているのかを明らかにした。
本研究は、脳と記憶のメカニズムについての理解を大きく前進させた。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (12 results)

All 2019 2018 2017

All Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results) Book (1 results)

  • [Journal Article] The hippocampal engram maps experience but not place2018

    • Author(s)
      Tanaka Kazumasa Z.、He Hongshen、Tomar Anupratap、Niisato Kazue、Huang Arthur J. Y.、McHugh Thomas J.
    • Journal Title

      Science

      Volume: 361 Issue: 6400 Pages: 392-397

    • DOI

      10.1126/science.aat5397

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Hippocampal Engram as a Memory Index2018

    • Author(s)
      Tanaka KZ*, McHugh TJ*
    • Journal Title

      Journal of Experimental Neuroscience

      Volume: eCollection 2018

    • DOI

      10.1177/1179069518815942

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Single-cell bioluminescence imaging of deep tissue in freely moving animals.2018

    • Author(s)
      Iwano S, Sugiyama M, Hama H, Watakabe A, Hasegawa N, Kuchimaru T, Tanaka KZ, Takahashi M, Ishida Y, Hata J, Shimozono S, Namiki K, Fukano T, Kiyama M, Okano H, Kizaka-Kondoh S, McHugh TJ, Yamamori T, Hioki H, Maki S, Miyawaki A.
    • Journal Title

      Science

      Volume: 359 Issue: 6378 Pages: 935-939

    • DOI

      10.1126/science.aaq1067

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] The hippocampal engram maps experience but not place.2018

    • Author(s)
      Tanaka KZ*, He H, Tomar A, Niisato K, Huang AJY, McHugh TJ*
    • Organizer
      新学術領域研究「生物移動情報学」領域会議
    • Related Report
      2018 Annual Research Report
  • [Presentation] The hippocampal engram maps experience but not place.2018

    • Author(s)
      Tanaka KZ*, He H, Tomar A, Niisato K, Huang AJY, McHugh TJ*
    • Organizer
      第10回光操作研究会・第2回脳情報動態合同国際シンポジウム
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 海馬記憶エングラムからの記憶解読2018

    • Author(s)
      田中和正
    • Organizer
      2018年度生理学研究所研究会「記憶学習の基盤機構と回路研究の新展開へのアプローチ」
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 海馬記憶エングラムは皮質記憶表象へのインデックスである2018

    • Author(s)
      田中和正
    • Organizer
      第27回海馬と高次脳機能学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] The hippocampal engram maps experience but not place.2018

    • Author(s)
      Tanaka KZ*, He H, Tomar A, Niisato K, Huang AJY, McHugh TJ*
    • Organizer
      The society for Neuroscience, annual meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Contextual Representation within the Hippocampus2017

    • Author(s)
      Tanaka Kazumasa Z.
    • Organizer
      The 2nd Annual conference of Neuroscience Society of Nepal
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Physiology of Hippocampal Memory Engram2017

    • Author(s)
      Tanaka Kazumasa Z.
    • Organizer
      第40回日本神経科学大会
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Physiology of Hippocampal Memory Engram2017

    • Author(s)
      Tanaka Kazumasa Z.
    • Organizer
      第26回海馬と高次機能学会
    • Related Report
      2017 Research-status Report
  • [Book] ブレインサイエンス・レビュー 20192019

    • Author(s)
      田中和正、他
    • Total Pages
      332
    • Publisher
      クバプロ
    • ISBN
      9784878051609
    • Related Report
      2018 Annual Research Report

URL: 

Published: 2017-04-28   Modified: 2020-03-30  

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