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Spatio-temporal dynamics of brain computation upon emotional memory formation

Research Project

Project/Area Number 18K06536
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 InstitutionNational Institute for Physiological Sciences

Principal Investigator

Agetsuma Masakazu  生理学研究所, 基盤神経科学研究領域, 特任准教授 (30425607)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords二光子イメージング / population coding / 恐怖条件付け / 前頭前野 / 光遺伝学 / 並列計算
Outline of Final Research Achievements

The medial prefrontal cortex (mPFC) is important to regulate emotions such as pleasure, anger, sadness, and fear. The key to understand its underlying brain mechanism is to understand information processing as a group of neurons (called population coding) by simultaneously recording the activity of large number of neurons in awake animals. But due to technical limitations, the nature of this population coding is poorly understood. In this study, we developed a pipeline for computational dissection and longitudinal two-photon imaging of neural population activities in the mouse dmPFC during fear-conditioning procedures, enabling us to detect learning-dependent changes in the dmPFC topology. We demonstrated learning-dependent dynamic modulation of population coding structured on an activity-dependent hub-network formation within the dmPFC.

Academic Significance and Societal Importance of the Research Achievements

前頭前野は喜怒哀楽などの情動の制御に重要であり、その制御異常は統合失調症やPTSDなどの難治性精神疾患に関わる。その動作原理の理解には、行動中の動物から神経集団の活動を記録することによる「神経群ネットワークとしての情報処理」の理解が鍵となると考えられていたが、これまでの技術では非常に困難であった。本研究は、様々な光学技術の新規開発により、学習の前、最中、及び学習後の記憶想起中のマウスから、大規模神経活動記録を可能とし、さらにAI・機械学習の新たなアルゴリズムを開発することで情報解読を可能とした。それにより、情動記憶制御の背景にある新たな脳内の計算原理・基盤を見出すことにつなげた。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (17 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (3 results) Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Open Access: 4 results,  Peer Reviewed: 3 results) Presentation (8 results) (of which Int'l Joint Research: 4 results,  Invited: 4 results)

  • [Int'l Joint Research] メキシコ国立自治大学(メキシコ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Natinal Autonomous University of Mexico(メキシコ)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Natinal Autonomous University of Mexico(メキシコ)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Activity-dependent organization of prefrontal hub-networks for associative learning and signal transformation2021

    • Author(s)
      Agetsuma Masakazu、Sato Issei、Tanaka Yasuhiro R、Carrillo-Reid Luis、Kasai Atsushi、Arai Yoshiyuki、Yoshitomo Miki、Inagaki Takashi、Hashimoto Hitoshi、Nabekura Junichi、Nagai Takeharu
    • Journal Title

      bioRxiv

      Volume: -

    • DOI

      10.1101/2021.08.31.458461

    • Related Report
      2021 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] 不安・恐怖・孤独の脳機構2021

    • Author(s)
      揚妻正和
    • Journal Title

      最新精神医学

      Volume: 26 Pages: 105-116

    • Related Report
      2020 Research-status Report
  • [Journal Article] PEO-CYTOP Fluoropolymer Nanosheets as a Novel Open-Skull Window for Imaging of the Living Mouse Brain2020

    • Author(s)
      Takahashi Taiga、Zhang Hong、Kawakami Ryosuke、Yarinome Kenji、Agetsuma Masakazu、Nabekura Junichi、Otomo Kohei、Okamura Yosuke、Nemoto Tomomi
    • Journal Title

      iScience

      Volume: 23 Issue: 10 Pages: 101579-101579

    • DOI

      10.1016/j.isci.2020.101579

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] CMOS-based bio-image sensor spatially resolves neural activity-dependent proton dynamics in the living brain2020

    • Author(s)
      Horiuchi Hiroshi、Agetsuma Masakazu、Ishida Junko、Nakamura Yusuke、Lawrence Cheung Dennis、Nanasaki Shin、Kimura Yasuyuki、Iwata Tatsuya、Takahashi Kazuhiro、Sawada Kazuaki、Nabekura Junichi
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 712-712

    • DOI

      10.1038/s41467-020-14571-y

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Imaging local brain activity of multiple freely moving mice sharing the same environment2019

    • Author(s)
      Inagaki Shigenori、Agetsuma Masakazu、Ohara Shinya、Iijima Toshio、Yokota Hideo、Wazawa Tetsuichi、Arai Yoshiyuki、Nagai Takeharu
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 7460-7460

    • DOI

      10.1038/s41598-019-43897-x

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 光が拓く神経科学の未来 - オプトジェネティクスと光イメージング 「大脳皮質のシナプス再編」2018

    • Author(s)
      揚妻正和、鍋倉淳一
    • Journal Title

      Clinical Neuroscience

      Volume: 36 Pages: 959-962

    • Related Report
      2018 Research-status Report
  • [Presentation] 恐怖記憶生成における前頭前野情報処理と神経回路再編2021

    • Author(s)
      揚妻正和
    • Organizer
      第68回 中部日本生理学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Optical and computational dissection of prefrontal neural circuit for fear memory.2021

    • Author(s)
      Agetsuma M., Sato I., Tanaka Y., Kasai A., Arai Y., Yoshitomo M., Hashimoto H., Nabekura J., Nagai T.
    • Organizer
      The 44th Annual Meeting of the Japan Neuroscience Society
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 光と数理による恐怖記憶における前頭前野情報処理機構の解明2021

    • Author(s)
      1.Agetsuma M., Sato I., Tanaka Y., Kasai A., Arai Y., Yoshitomo M., Hashimoto H., Nabekura J., Nagai T.
    • Organizer
      第98回日本生理学会大会 / 第126回日本解剖学会総会・全国学術集会 合同大会 シンポジウム「大脳皮質局所神経回路構築と学習記憶によるリモデリング」にて
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Optical and computational dissection of prefrontal neural circuit for fear memory.2021

    • Author(s)
      3.Agetsuma M., Sato I., Tanaka Y., Kasai A., Arai Y., Yoshitomo M., Hashimoto H., Nabekura J., Nagai T.
    • Organizer
      日本薬理学会第94回年会 シンポジウム「脳活動計測の新技術と数理解析の融合による情動研究の新展開」にて
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Optical and computational dissection of neural circuit for fear memory2020

    • Author(s)
      4.Agetsuma M., Sato I., Tanaka Y., Kasai A., Arai Y., Yoshitomo M., Hashimoto H., Nabekura J., Nagai T.
    • Organizer
      第97回日本生理学会大会(誌上開催)
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 不安・恐怖関連神経回路における脳内情報処理基盤を「光」で読み解く2019

    • Author(s)
      揚妻 正和
    • Organizer
      第11回日本不安症学会学術大会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Population coding of fear memory in prefrontal cortex2019

    • Author(s)
      Masakazu Agetsuma, Yoshiyuki Arai, Atsushi Kasai, Hitoshi Hashimoto, and Takeharu Nagai
    • Organizer
      Federation of Asian and Oceanian Physiological Societies (FAOPS 2019)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Population coding of fear memory in medial prefrontal cortex2018

    • Author(s)
      Masakazu Agetsuma, Yoshiyuki Arai, Atsushi Kasai, Hitoshi Hashimoto, and Takeharu Nagai
    • Organizer
      Neuroscience2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2023-01-30  

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