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2022 Fiscal Year Annual Research Report

Elucidating the Dynamics of Memory

Research Project

Project/Area Number 19H05646
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

McHugh Thomas  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, チームリーダー (50553731)

Project Period (FY) 2019-06-26 – 2024-03-31
Keywordshippocampus / cortex / oscillations / memory
Outline of Annual Research Achievements

During the previous fiscal year we have continued to conducted experiments investigating how oscillations and spiking organize the precise activity of subsets of neurons related to memory and experience. We published a manuscript detailing a state-dependent impact of transient silencing of the CA2 subfield of the hippocampus on the dynamics of network activity in the structure, featuring our newly developed machine learning based algorithm for the decoding of position based on the spikes recorded on a single tetrode. This allowed us, for the first time, to look at positional decoding in a subfield and state dependent manner. We have also published a review paper on our previous work on the differential contributions of the CA2 and CA3 subfields to sharp-wave ripples and replay. We have collected data using closed-loop optogenetics and using high-density neuropixels recording that will be analyzed in the coming fiscal year.

Research Progress Status

翌年度、交付申請を辞退するため、記入しない。

Strategy for Future Research Activity

翌年度、交付申請を辞退するため、記入しない。

  • Research Products

    (5 results)

All 2023 2022

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

  • [Journal Article] Behavioral status modulates <scp>CA2</scp> influence on hippocampal network dynamics2023

    • Author(s)
      He Hongshen、Wang Yi、McHugh Thomas J.
    • Journal Title

      Hippocampus

      Volume: 33 Pages: 252~265

    • DOI

      10.1002/hipo.23498

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The expanded circuitry of hippocampal ripples and replay2023

    • Author(s)
      He Hongshen、Guan Hefei、McHugh Thomas J.
    • Journal Title

      Neuroscience Research

      Volume: 189 Pages: 13~19

    • DOI

      10.1016/j.neures.2022.12.010

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] CA2 circuit mediating hippocampal modulation of cholinergic tone2022

    • Author(s)
      Thomas McHugh
    • Organizer
      Australia Neuroscience Society Annual Meeting
    • Int'l Joint Research / Invited
  • [Presentation] engrams, inhibition and oscillaitons2022

    • Author(s)
      Thomas McHugh
    • Organizer
      Neuronal Representations Meeting, univ of Freiburg
    • Invited
  • [Presentation] memory modulation by noncanonical hippocampal circuits2022

    • Author(s)
      Thomas McHugh
    • Organizer
      KIST BSI, Seoul, Korea
    • Invited

URL: 

Published: 2023-12-25  

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