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Analyses of spiking and LFP activities in the core regions of the default mode network

Research Project

Project/Area Number 21K03141
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 10040:Experimental psychology-related
Research InstitutionOsaka University

Principal Investigator

Watanabe Kei  大阪大学, 大学院生命機能研究科, 准教授 (00772740)

Co-Investigator(Kenkyū-buntansha) 番 浩志  国立研究開発法人情報通信研究機構, 未来ICT研究所脳情報通信融合研究センター, 主任研究員 (00467391)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsFunctional MRI / 霊長類 / デフォルトモードネットワーク / 非侵襲計測 / サルfMRI / MION / 二ホンザル / fMRI計測 / 高次認知機能 / 非侵襲実験 / ニホンザル / 局所電場電位(LFP) / fMRI / Spiking activity
Outline of Research at the Start

デフォルトモードネットワーク(DMN)は,安静時に大きな活動を示す領域,逆に言えば,タスク時に活動が減少する脳領域である。DMNは極めて重要な機能を担うとされるが,その詳細は未解明である。本研究では(1)独自の頭部固定法を用いた完全非侵襲サルfMRI計測を行い,DMNコア領域を同定する。(2)各コアの,安静時とタスク時のニューロン活動・フィールド電位を解析し,コア間の活動特性の差異を明らかにする。(3)薬物注入による各コアの活動抑制を行い,行動変容を解析する。このように,細胞活動からスタートし,領域内フィールド電位,領域間相関へと知見を積み重ね,DMN機能をボトムアップで解明することを試みる。

Outline of Final Research Achievements

The default mode network (DMN) is a region of the brain that shows high activity at rest and low activity during cognitive processing. Because abnormalities in the DMN correlate with various psychiatric and developmental disorders, the DMN is thought to play some important roles. However, the biological basis of the DMN has been largely unknown. In this study, we attempted to identify the DMN core region by using a completely noninvasive monkey fMRI technique to measure monkey brain fMRI during awake resting and task conditions. As described in detail below, we found significantly higher activity in the medial frontal lobe at rest than at task, but no other brain regions that have been identified as core DM regions in previous studies were detected.

Academic Significance and Societal Importance of the Research Achievements

デフォルトモードネットワーク(DMN)は,安静時においてタスク時と比較して大きな活動を示す脳領域で,何らかの重要な機能を担うとされている。本研究は、完全非侵襲のサルfMRI計測法を用いて,覚醒安静時とタスク時のサル脳fMRI計測を行いDMNコア領域の同定を試みた。その結果、ヒト先行研究と同じく内側前頭葉において安静時においてタスク時よりも有意に高い活動が見られたが、他のDMNのコア領域は検出されなかった。さらに精度の高いfMRI計測のために,MION造影剤を用いその有効性を確認した。研究期間が終了後も,引き続き完全非侵襲のサルを用いたMION-fMRIによるDMN領域の同定を行っていく。

Report

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

    (14 results)

All 2024 2023 2022 2021 Other

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

  • [Int'l Joint Research] University of Oxford(英国)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] The Hong Kong Polytechnic University/The Education University of Hong Kong(中国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] An easy-to-implement, non-invasive head restraint method for monkey fMRI2024

    • Author(s)
      Reiji Tanaka, Kei Watanabe, Takafumi Suzuki, Kae Nakamura, Masaharu Yasuda, Hiroshi Ban, Ken-ichi Okada, Shigeru Kitazawa
    • Journal Title

      NeuroImage

      Volume: 285 Pages: 120479-120479

    • DOI

      10.1016/j.neuroimage.2023.120479

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Optimal information loading into working memory explains dynamic coding in the prefrontal cortex2023

    • Author(s)
      Stroud Jake P.、Watanabe Kei、Suzuki Takafumi、Stokes Mark G.、Lengyel M?t?
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 120 Issue: 48 Pages: 1-12

    • DOI

      10.1073/pnas.2307991120

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Cycles of goal silencing and reactivation underlie complex problem-solving in primate frontal and parietal cortex2023

    • Author(s)
      Watanabe Kei、Kadohisa Mikiko、Kusunoki Makoto、Buckley Mark J.、Duncan John
    • Journal Title

      Nature Communications

      Volume: 14 Issue: 1 Pages: 1-18

    • DOI

      10.1038/s41467-023-40676-1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ready to detect a reversal of time's arrow: a psychophysical study using short video clips in daily scenes2023

    • Author(s)
      Hanyu Nao、Watanabe Kei、Kitazawa Shigeru
    • Journal Title

      Royal Society Open Science

      Volume: 10 Issue: 4 Pages: 1-17

    • DOI

      10.1098/rsos.230036

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A One-Shot Shift from Explore to Exploit in Monkey Prefrontal Cortex2021

    • Author(s)
      Achterberg Jascha、Kadohisa Mikiko、Watanabe Kei、Kusunoki Makoto、Buckley Mark J.、Duncan John
    • Journal Title

      The Journal of Neuroscience

      Volume: 42 Issue: 2 Pages: 276-287

    • DOI

      10.1523/jneurosci.1338-21.2021

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Distinct Causal Influences of Dorsolateral Prefrontal Cortex and Posterior Parietal Cortex in Multiple-Option Decision Making2021

    • Author(s)
      Woo Tsz-Fung、Law Chun-Kit、Ting Kin-Hung、Chan Chetwyn C H、Kolling Nils、Watanabe Kei、Chau Bolton K H
    • Journal Title

      Cerebral Cortex

      Volume: 32 Issue: 7 Pages: 1390-1404

    • DOI

      10.1093/cercor/bhab278

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 覚醒行動中のサルにおける完全に非侵襲な fMRI 計測法2023

    • Author(s)
      田中澪士, 渡邉慶, 鈴木隆文, 番浩志, 北澤茂
    • Organizer
      第115回近畿生理学会談話会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Neural bases of the sense of proper direction of time in humans and monkeys: a comparative fMRI study2022

    • Author(s)
      Tanaka R, Hanyu N, Watanabe K and Kitazawa S
    • Organizer
      International Symposium on Chronogenesis: How the Mind Generates Time
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] ヒトとサルの時間の方向感覚に関する神経基盤のfMRI実験による検討2022

    • Author(s)
      田中 澪士, 羽生 奈央, 渡邉 慶, 北澤 茂
    • Organizer
      「時間生成学」2022年度第2回領域会議
    • Related Report
      2022 Research-status Report
  • [Presentation] 時が流れる方向の主観的弁別における神経活動2022

    • Author(s)
      羽生 奈央, 渡邉 慶, 北澤 茂
    • Organizer
      第45回日本神経科学大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 覚醒サルfMRIのための完全非侵襲な頭部固定法2021

    • Author(s)
      渡邉 慶・田中 澪士・番 浩志・岡田 研一・北澤 茂
    • Organizer
      第44回日本神経科学大会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] A non-invasive method to prevent head movements of awake monkeys during event-related fMRI2021

    • Author(s)
      Tanaka, R., Watanabe, K., Ban, H., Okada, K., and Kitazawa, S
    • Organizer
      The 27th Annual Meeting of OHBM 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2021-04-28   Modified: 2025-01-30  

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