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Membrane potential dynamics underlying hippocampal theta oscillations

Research Project

Project/Area Number 20K15926
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 46030:Function of nervous system-related
Research InstitutionThe University of Tokyo

Principal Investigator

Matsumoto Nobuyoshi  東京大学, 大学院薬学系研究科(薬学部), 助教 (40803143)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2022: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords海馬 / シータ / 膜電位 / シータ波
Outline of Research at the Start

海馬は動物の記憶、学習に重要な脳部位であり、これらの機能を支えるのは海馬を構成する神経細胞の活動である。海馬では、これらの個々の神経細胞の活動が集合となり、局所場電位を生み出す。特に海馬で観察される局所場電位のうち、周波数が3~12 Hzのシータ波は、記憶の獲得に重要とされている。また、局所場電位に反映される神経活動は、個々の神経細胞の発火(活動電位)および発火閾値に達しない膜電位である。
本研究では膜電位の観点から局所場電位と海馬の神経細胞の活動の関係性に着目し、神経細胞の膜電位シータ振動と、局所場電位のシータ波がどのように相関しているかを理解することを目指す。

Outline of Final Research Achievements

In this study, to investigate the mechanism of the generation of theta oscillations in the hippocampus, the local field potentials in the hippocampal CA1 area and membrane potentials of several neurons in the CA1 area were recorded from awake and anesthetized mice. Local field potentials were obtained by the extracellular recording technique using tungsten electrodes, whereas membrane potentials were obtained by the patch-clamp method. We found a weak but significant correlation between the power and frequency of theta oscillations of the membrane potential and theta oscillations of the local field potentials.

Academic Significance and Societal Importance of the Research Achievements

本研究は、記憶・学習や空間ナビゲーションのような海馬の機能と密接に関連するシータ振動に焦点を当てたもので、認知機能や機能障害のモデルの構築に重要なデータとなりうす。シータ振動の生成に潜む精緻な原理を理解することで、アルツハイマー病やその他の認知機能障害など、記憶に関連する疾患に対する新たな介入につながる可能性がある。
さらに、カスタム設計された深層学習モデルが、わずか3つのニューロンの膜電位シータ振動のトレースに基づいてシータ波のトレースを予測できることを実証した。すなわち、複雑な生体信号の解読における機械学習モデルの頑健性を示唆している。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (15 results)

All 2024 2023 2022 2021 2020

All Journal Article (15 results) (of which Peer Reviewed: 15 results,  Open Access: 14 results)

  • [Journal Article] Low Atmospheric Oxygen Attenuates Alpha Oscillations in the Primary Motor Cortex of Awake Rats2024

    • Author(s)
      Kawamura Masashi、Yoshimoto Airi、Ikegaya Yuji、Matsumoto Nobuyoshi
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 47 Issue: 2 Pages: 462-468

    • DOI

      10.1248/bpb.b23-00863

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2024-02-20
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Generation of Dopamine Transporter (DAT)-mCherry Knock-in Rats by CRISPR-Cas9 Genome Editing2024

    • Author(s)
      Matsumoto Nobuyoshi、Miyano Miyuki、Abe Takaya、Kashima Tetsuhiko、Kato-Ishikura Eriko、Inoue Ken-ichi、Liu Jiayan、Kiyonari Hiroshi、Takeuchi Haruki、Ikegaya Yuji
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 47 Issue: 2 Pages: 394-398

    • DOI

      10.1248/bpb.b23-00598

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2024-02-08
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Theta oscillations represent collective dynamics of multineuronal membrane potentials of murine hippocampal pyramidal cells2023

    • Author(s)
      Noguchi Asako、Yamashiro Kotaro、Matsumoto Nobuyoshi、Ikegaya Yuji
    • Journal Title

      Communications Biology

      Volume: 6 Issue: 1 Pages: 398-398

    • DOI

      10.1038/s42003-023-04719-z

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] An open-source application to identify the three-dimensional locations of electrodes implanted into the rat brain from computed tomography images2023

    • Author(s)
      Kudara Mikuru、Matsumoto Nobuyoshi、Kuga Nahoko、Yamashiro Kotaro、Yoshimoto Airi、Ikegaya Yuji、Sasaki Takuya
    • Journal Title

      Neuroscience Research

      Volume: 193 Pages: 20-27

    • DOI

      10.1016/j.neures.2023.03.003

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ramelteon administration enhances novel object recognition and spatial working memory in mice2023

    • Author(s)
      Kudara Mikuru、Kato-Ishikura Eriko、Ikegaya Yuji、Matsumoto Nobuyoshi
    • Journal Title

      Journal of Pharmacological Sciences

      Volume: 152 Issue: 2 Pages: 128-135

    • DOI

      10.1016/j.jphs.2023.04.002

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Machine learning-based segmentation of the rodent hippocampal CA2 area from Nissl-stained sections2023

    • Author(s)
      Takeuchi Yuki、Yamashiro Kotaro、Noguchi Asako、Liu Jiayan、Mitsui Shinichi、Ikegaya Yuji、Matsumoto Nobuyoshi
    • Journal Title

      Frontiers in Neuroanatomy

      Volume: 17 Pages: 1172512-1172512

    • DOI

      10.3389/fnana.2023.1172512

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Postnatal Maturation of Membrane Potential Dynamics during<i>in Vivo</i>Hippocampal Ripples2023

    • Author(s)
      Noguchi Asako、Matsumoto Nobuyoshi、Ikegaya Yuji
    • Journal Title

      The Journal of Neuroscience

      Volume: 43 Issue: 35 Pages: 6126-6140

    • DOI

      10.1523/jneurosci.0125-23.2023

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enhancement of Motor Cortical Gamma Oscillations and Sniffing Activity by Medial Forebrain Bundle Stimulation Precedes Locomotion2022

    • Author(s)
      Yoshimoto Airi、Shibata Yusuke、Kudara Mikuru、Ikegaya Yuji、Matsumoto Nobuyoshi
    • Journal Title

      eNeuro

      Volume: 9 Issue: 4 Pages: 4-9

    • DOI

      10.1523/eneuro.0521-21.2022

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Delayed reinforcement hinders subsequent extinction2022

    • Author(s)
      Shibata Yusuke、Yoshimoto Airi、Yamashiro Kotaro、Ikegaya Yuji、Matsumoto Nobuyoshi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 591 Pages: 20-25

    • DOI

      10.1016/j.bbrc.2021.12.101

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Acute Ramelteon Treatment Maintains the Cardiac Rhythms of Rats during Non-REM Sleep2021

    • Author(s)
      Yoshimoto Airi、Yamashiro Kotaro、Ikegaya Yuji、Matsumoto Nobuyoshi
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 44 Issue: 6 Pages: 789-797

    • DOI

      10.1248/bpb.b20-00932

    • NAID

      130008046708

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2021-06-01
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Molecular Characterization of Superficial Layers of the Presubiculum During Development2021

    • Author(s)
      Liu Jiayan、Kashima Tetsuhiko、Morikawa Shota、Noguchi Asako、Ikegaya Yuji、Matsumoto Nobuyoshi
    • Journal Title

      Frontiers in Neuroanatomy

      Volume: 15 Pages: 662724-662724

    • DOI

      10.3389/fnana.2021.662724

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Multiple states in ongoing neural activity in the rat visual cortex2021

    • Author(s)
      Konno Daichi、Nishimoto Shinji、Suzuki Takafumi、Ikegaya Yuji、Matsumoto Nobuyoshi
    • Journal Title

      PLOS ONE

      Volume: 16 Issue: 8 Pages: e0256791-e0256791

    • DOI

      10.1371/journal.pone.0256791

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ramelteon modulates gamma oscillations in the rat primary motor cortex during non-REM sleep2021

    • Author(s)
      Airi Yoshimoto, Kotaro Yamashiro, Takeshi Suzuki, Yuji Ikegaya, Nobuyoshi Matsumoto
    • Journal Title

      Journal of Pharmacological Sciences

      Volume: 145 Issue: 1 Pages: 97-104

    • DOI

      10.1016/j.jphs.2020.11.006

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Deep learning-based classification of GAD67-positive neurons without the immunosignal2021

    • Author(s)
      Kotaro Yamashiro, Jiayan Liu, Nobuyoshi Matsumoto, Yuji Ikegaya
    • Journal Title

      Frontiers in Neuroanatomy

      Volume: 15 Pages: 643067-643067

    • DOI

      10.3389/fnana.2021.643067

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Polyherbal Formulation Enhancing Cerebral Slow Waves in Sleeping Rats2020

    • Author(s)
      Kotaro Yamashiro, Megumi Aoki, Nobuyoshi Matsumoto, Yuji Ikegaya
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 43 Issue: 9 Pages: 1356-1360

    • DOI

      10.1248/bpb.b20-00285

    • NAID

      130007894893

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access

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Published: 2020-04-28   Modified: 2025-01-30  

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