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Brain process for memory formation of emotional experiment

Research Project

Project/Area Number 17K01987
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Basic / Social brain science
Research InstitutionYamaguchi University

Principal Investigator

ISHIKAWA Junko  山口大学, 大学院医学系研究科, 助教 (30570808)

Co-Investigator(Kenkyū-buntansha) 美津島 大  山口大学, 大学院医学系研究科, 教授 (70264603)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords記憶 / 情動 / 海馬CA1 / 情動性経験 / 記憶形成 / リップル波 / 脳・神経
Outline of Final Research Achievements

Feature analysis of ripple-like event indicate that ripple-like events encode memory information, and multi-unit recording in the hippocampal CA1 of male rats revealed episode-type specific alteration of hippocampal CA neural activity. Additionally, we found that basolateral nucleus amygdala (BLA) strongly influence on restraint stress-related CA1 neural activity and its memory formation, but does not significantly affect memory formation for a contact with female rat. The present study shows episode-specific CA1 neural activity and memory mechanism.

Academic Significance and Societal Importance of the Research Achievements

エピソード経験の記憶メカニズムに海馬CA1が関わっていることは解っていたが、それに関わるCA1神経活動特性はあまり解っていない。本研究では、エピソードの種類によって記憶形成機構が異なることを示すことが出来た。これは、記憶形成の強弱の問題や、記憶のコーディング様式を解明するにあたって重要な知見である。更なる解析を進めることで、将来的には記憶のデコーディング実現化につながる可能性があり、この研究領域を発展させ重要な研究課題の1つである。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (9 results)

All 2020 2019 2018

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

  • [Journal Article] Contribution of the prefrontal cortex and basolateral amygdala to behavioral decision making under reward/punishment conflict2020

    • Author(s)
      Ishikawa, J., Sakurai, Y., Ishikawa, A. and Mitsushima, D.
    • Journal Title

      Psychopharmacology

      Volume: 237 Issue: 3 Pages: 639-654

    • DOI

      10.1007/s00213-019-05398-7

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The loop neural circuit between the medial prefrontal cortex and the amygdala in the rat brain.2019

    • Author(s)
      Ishikawa J, Ishikawa A.
    • Journal Title

      Neurosci Lett

      Volume: 712 Pages: 134476-134476

    • DOI

      10.1016/j.neulet.2019.134476

    • Related Report
      2019 Annual Research Report
  • [Presentation] エピソード特異的に符号化された海馬内情報:リップル様発火活動とシナプス多様化2020

    • Author(s)
      石川淳子、友景琢人、美津島大
    • Organizer
      第97回日本生理学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] エピソード記憶特異的なCA1ニューロンのリップル様発火活動の人工知能解析2020

    • Author(s)
      佐藤諒、石川淳子、友景琢人、美津島大
    • Organizer
      第97回日本生理学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] CA1 におけるエピソード経験特異的なリップル様発火活動とシナプス多様化2019

    • Author(s)
      石川淳子、友景琢人、美津島大
    • Organizer
      第28回 海馬と高次脳機能学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Real-time dynamism of hippocampal CA1 firings after the 4 different episodic stimuli2019

    • Author(s)
      Takuto Tomokage, Junko Ishikawa, Dai Mitsushima
    • Organizer
      第96回日本生理学会大会 The 9th Federation of the Asian and Oceanian Physiological Societies Congress
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Real-time dynamism of hippocampal CA1 firings after the 4 different episodic stimuli2019

    • Author(s)
      友景琢人、石川淳子、美津島大
    • Organizer
      The 9th Federation of the Asian and Oceanian Physiological Societies Congress
    • Related Report
      2018 Research-status Report
  • [Presentation] Real-time dynamism of hippocampal CA1 firings after emotional episodes2018

    • Author(s)
      石川淳子、友景琢人、美津島大
    • Organizer
      第70回日本生理学会中国四国地方会
    • Related Report
      2018 Research-status Report
  • [Presentation] エピソード様経験による海馬CA1リップル様イベントの形状変化2018

    • Author(s)
      友景啄人、石川淳子、美津島大
    • Organizer
      第95回日本生理学会大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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