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Remodeling of excitatory and inhibitory networks in the motor cortex

Research Project

Project/Area Number 18K14844
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 46020:Anatomy and histopathology of nervous system-related
Research InstitutionNational Institute for Physiological Sciences

Principal Investigator

Sohn Jaerin  生理学研究所, 基盤神経科学研究領域, 特任研究員 (40780333)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords運動学習 / 運動野 / シナプス可塑性 / 電子顕微鏡 / 錐体細胞 / 光学・電子顕微鏡相関解析 / 興奮性シナプス / 抑制性シナプス / ATUM-SEM法 / 光学・電子顕微鏡相関観察法 / 学習 / 興奮性ニューロン / 抑制性ニューロン / 免疫組織化学
Outline of Final Research Achievements

While motor learning affords novel motor skills to animals, neuronal circuit in the motor cortex is dynamically rearranged. We investigated this network remodeling morphologically, by observation in vivo of spine dynamics on dendrites in the motor cortex combined with characterization of presynaptic axon terminals. We revealed that motor learning enhanced spine dynamics, i.e. spine formation and elimination. In addition, temporal dynamics were different between corticocortical and thalamocortical synapses. Our findings suggest that corticocortical and thalamocortical pathways contribute differently to animal's motor skill acquisition.

Academic Significance and Societal Importance of the Research Achievements

動物の学習における大脳皮質の役割を知るには、学習時に変化するニューロン同士の結合パターンを知る必要がある。本研究により形態学的解析を通じて運動学習中に起こる運動野神経回路の変化を網羅的に調べることが可能になった。光学顕微鏡による入出力の描写や、電子顕微鏡を用いた微細構造解析により、運動学習によるシナプス結合の時間的特異性が明らかとなった。これにより大脳皮質が果たす学習での役割の解明に一歩前進することができた。

Report

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

    (23 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (2 results) Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (16 results) (of which Int'l Joint Research: 8 results,  Invited: 2 results)

  • [Int'l Joint Research] Humboldt University of Berlin(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Charite Universitatsmedizin Berlin/Humboldt University of Berlin(ドイツ)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Exclusive labeling of direct and indirect pathway neurons in the mouse neostriatum by an adeno-associated virus vector with Cre/lox system2021

    • Author(s)
      Okamoto Shinichiro、Yamauchi Kenta、Sohn Jaerin、Takahashi Megumu、Ishida Yoko、Furuta Takahiro、Koike Masato、Fujiyama Fumino、Hioki Hiroyuki
    • Journal Title

      STAR Protocols

      Volume: 2 Issue: 1 Pages: 100230-100230

    • DOI

      10.1016/j.xpro.2020.100230

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Overlapping Projections of Neighboring Direct and Indirect Pathway Neostriatal Neurons to Globus Pallidus External Segment2020

    • Author(s)
      Okamoto Shinichiro、Sohn Jaerin、Tanaka Takuma、Takahashi Megumu、Ishida Yoko、Yamauchi Kenta、Koike Masato、Fujiyama Fumino、Hioki Hiroyuki
    • Journal Title

      iScience

      Volume: 23 Issue: 9 Pages: 101409-101409

    • DOI

      10.1016/j.isci.2020.101409

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ipsi- and contralateral corticocortical projection-dependent subcircuits in layer 2 of the rat frontal cortex2019

    • Author(s)
      Ueta Yoshifumi、Sohn Jaerin、Agahari Fransiscus Adrian、Im Sanghun、Hirai Yasuharu、Miyata Mariko、Kawaguchi Yasuo
    • Journal Title

      Journal of Neurophysiology

      Volume: 122 Issue: 4 Pages: 1461-1472

    • DOI

      10.1152/jn.00333.2019

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Preferential inputs from cholecystokinin-positive neurons to the somatic compartment of parvalbumin-expressing neurons in the mouse primary somatosensory cortex2018

    • Author(s)
      Hioki Hiroyuki、Sohn Jaerin、Nakamura Hisashi、Okamoto Shinichiro、Hwang Jungwon、Ishida Yoko、Takahashi Megumu、Kameda Hiroshi
    • Journal Title

      Brain Research

      Volume: 1695 Pages: 18-30

    • DOI

      10.1016/j.brainres.2018.05.029

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Large Volume Electron Microscopy and Neural Microcircuit Analysis2018

    • Author(s)
      Kubota Yoshiyuki、Sohn Jaerin、Kawaguchi Yasuo
    • Journal Title

      Frontiers in Neural Circuits

      Volume: 12 Pages: 98-98

    • DOI

      10.3389/fncir.2018.00098

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 運動学習時の皮質ー皮質間連絡・視床ー皮質投射の神経回路再編成2021

    • Author(s)
      孫 在隣, 川口 泰雄, 窪田 芳之
    • Organizer
      第126回日本解剖学会総会・全国学術集会 第98回日本生理学会大会 合同大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 皮質-皮質間連絡・視床-皮質投射の入力依存的な運動学習時回路動態2020

    • Author(s)
      孫 在隣, Mohammed Youssef, 川口 泰雄, 窪田 芳之
    • Organizer
      第43回日本神経科学大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 大容量電顕データセットを使った視床-大脳皮質神経終末のシナプスターゲット解析2020

    • Author(s)
      窪田 芳之, 孫 在隣, 倉本 恵梨子, ヨーゼフ モハメド, 日置 寛之, 川口 泰雄
    • Organizer
      第43回日本神経科学大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Thalamo-cortical synaptic network in motor cortex analyzed with large volume electron microscopy.2020

    • Author(s)
      Kubota Y, Sohn J, Kuramoto E, Kawaguchi Y.
    • Organizer
      The Eighth International Neural Microcircuit Conference-Synaptic Specificity to Circuit Dynamics-
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Input-dependent spine dynamics in motor cortex during motor learning.2020

    • Author(s)
      Sohn J, Youssef M, Hatada S, Kawaguchi Y, Kubota Y.
    • Organizer
      The Eighth International Neural Microcircuit Conference-Synaptic Specificity to Circuit Dynamics-
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Thalamo-cortical synaptic network in motor cortex analyzed with large volume electron microscopy.2020

    • Author(s)
      Kubota Y, Sohn J, Kuramoto E, Kawaguchi Y.
    • Organizer
      ABiS Symposium Forefront and Future of Electron Microscopic Imaging
    • Related Report
      2019 Research-status Report
  • [Presentation] Network plastic changes in the primary motor cortex as the basis of a new motor skill acquisition.2020

    • Author(s)
      Kubota Y, Sohn J, Suzuki M, Hatada S, Youssef M, Larkum ME, Kawaguchi Y.
    • Organizer
      2020 Gordon Research Conference, Thamamocortiacl Interactions
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 皮質-皮質間連絡・視床-皮質投射の入力依存的な運動学習時回路動態2020

    • Author(s)
      孫在隣、窪田芳之、川口泰雄
    • Organizer
      第125回日本解剖学会総会・全国学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Thalamo-cortical synaptic network in motor cortex analyzed with large volume electron microscopy.2019

    • Author(s)
      Kubota Y, Sohn J, Kuramoto E, Kawaguchi Y.
    • Organizer
      2019 Gordon Research Conference, Dendrites: Molecules, Structure and Function
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Corticocortical and thalamocortical remodeling in the cortical microcircuit during motor learning.2019

    • Author(s)
      Sohn J, Kubota Y, Kawaguchi Y.
    • Organizer
      第42回日本神経科学大会
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Circuit remodeling in the motor cortex during motor learning.2019

    • Author(s)
      Sohn J, Kubota Y, Kawaguchi Y.
    • Organizer
      49th annual meeting of the Society for Neuroscience
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Thalamo-cortical synaptic network in motor cortex analyzed with large volume electron microscopy.2019

    • Author(s)
      Kubota Y, Sohn J, Kuramoto E, Kawaguchi Y.
    • Organizer
      49th annual meeting of the Society for Neuroscience
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Network plastic changes in the primary motor cortex as the basis of a new motor skill acquisition.2019

    • Author(s)
      Sohn J, Kubota Y, Kawaguchi Y.
    • Organizer
      The 9th Okazaki-Tuebingen-Beijing Joint Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Thalamo-cortical target analysis in cortical motor cortex using large volume electron microscopy2019

    • Author(s)
      Kubota Y, Sohn J, Kuramoto E, Kawaguchi Y
    • Organizer
      第124回日本解剖学会総会・全国学術集会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Large volume electron microscopy and neural microcircuitanalysis2019

    • Author(s)
      Kubota Y, Sohn J, Kawaguchi Y
    • Organizer
      9th FAOPS
    • Related Report
      2018 Research-status Report
  • [Presentation] A carbon nanotube tape for serial-section electron microscopy of brain ultrastructure2018

    • Author(s)
      Kubota Y, Sohn J, Kawaguchi Y
    • Organizer
      第8回名古屋大学医学系研究科・生理学研究所合同シンポジウム
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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