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The medial nucleus of the medial geniculate body in auditory processing

Research Project

Project/Area Number 19K06908
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 46010:Neuroscience-general-related
Research InstitutionKumamoto University

Principal Investigator

Song Wen-Jie  熊本大学, 大学院生命科学研究部(医), 教授 (90216573)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords聴覚 / 内側膝状体 / 聴覚皮質 / 神経科学
Outline of Research at the Start

大脳皮質聴覚野における情報処理は聴覚視床である内側膝状体からの入力に依存する。内側膝状体は腹側核、背側核と内側核の三つの亜核から構成されているが、各亜核の役割分担は明らかになっていない。この問題の解決には、亜核特異的な操作による活性化や抑制は不可欠と考えられるが、これに関連して、申請者らは最近、内側核に選択的に遺伝子を導入することに成功した。本研究では、この技術を利用し、光遺伝学と電気生理学的な方法を組合せて、内側核の選択的な活性化などにより、聴覚皮質内の内側核標的領野・細胞を同定し、その領野の聴覚応答への寄与を解明する。

Outline of Final Research Achievements

The medial geniculate body, or the auditory thalamus, is considered to have three subdivisions: the ventral nucleus, the dorsal nucleus, and the medial nucleus. Identification of these sub-nuclei, however, has been based largely on Nissl staining and eye judgement. The borders between the sub-regions are not always clear, and this has hindered the identification and the understanding of the function of the sub-nuclei. Finding a molecular marker for each subdivision will be an important step towards understanding the structure and function of the sub-nuclei. In this study, we identified several molecular markers for the medial subdivision (MGm). The discovery made it possible to label all MGm neurons in a specific manner, and the results showed that MGm projects to all auditory regions in the cortex, targeting primarily cortical layer 5. These results suggest that MGm controls directly the output of all auditory areas in the cortex.

Academic Significance and Societal Importance of the Research Achievements

内側膝状体は聴覚に重要な役割を果たしていると考えられているが、その機能の解明は、亜核の同定から始めなければならない。本研究の成果によって、三つの亜核の一つである内側核を分子的に同定できることが示されたため、内側膝状体研究のマイルドストン的な発見と言える。分子マーカーの同定により、内側核が全ての聴覚皮質領野に投射し、それらの出力を直接制御する回路も明らかとなった。これらの研究成果は内側核機能の完全解明に基礎と手段を提供するものである。聴覚はヒトのコミュニケーションや社会生活に不可欠な感覚機能で、本研究の成果は聴覚の理解、しいては聴覚障害の治療に繋がるため、その社会的意義も明らかである。

Report

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

    (14 results)

All 2022 2021 2020 2019 Other

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 3 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Book (1 results) Remarks (2 results)

  • [Journal Article] Region-dependent Millisecond Time-scale Sensitivity in Spectrotemporal Integrations in Guinea Pig Primary Auditory Cortex2022

    • Author(s)
      Nishimura Masataka、Song Wen-Jie
    • Journal Title

      Neuroscience

      Volume: 480 Pages: 229-245

    • DOI

      10.1016/j.neuroscience.2021.10.030

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Postnatal development of subfields in the core region of the mouse auditory cortex2021

    • Author(s)
      Feian Chen, Makoto Takemoto, Masataka Nishimura, Ryohei Tomioka, Wen-Jie Song
    • Journal Title

      Hearing Research

      Volume: 400 Pages: 108138-108138

    • DOI

      10.1016/j.heares.2020.108138

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Differential cortical and subcortical projection targets of subfields in the core region of mouse auditory cortex.2020

    • Author(s)
      Nakata S. Takemoto M, Song W-J.
    • Journal Title

      Hearing Research

      Volume: 386 Pages: 107876-107876

    • DOI

      10.1016/j.heares.2019.107876

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Tsukushi is essential for the development of the inner ear2020

    • Author(s)
      Miwa Toru、Ohta Kunimasa、Ito Naofumi、Hattori Satoko、Miyakawa Tsuyoshi、Takeo Toru、Nakagata Naomi、Song Wen-Jie、Minoda Ryosei
    • Journal Title

      Molecular Brain

      Volume: 13 Issue: 1 Pages: 29-29

    • DOI

      10.1186/s13041-020-00570-z

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dynamic changes of timing precision in timed actions during a behavioural task in guinea pigs2020

    • Author(s)
      Nishimura Masataka、Wang Chi、Shu Reika、Song Wen-Jie
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 20079-20079

    • DOI

      10.1038/s41598-020-76953-y

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cue-dependent safety and fear learning in a discriminative auditory fear conditioning paradigm in the mouse2019

    • Author(s)
      Takemoto Makoto、Song Wen-Jie
    • Journal Title

      Learning & Memory

      Volume: 26 Issue: 8 Pages: 284-290

    • DOI

      10.1101/lm.049577.119

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Mice deficient in protein tyrosine phosphatase receptor type Z (PTPRZ) show reduced responsivity to methamphetamine despite an enhanced response to novelty2019

    • Author(s)
      Fujikawa Akihiro、Noda Yukihiro、Yamamoto Hideko、Tanga Naomi、Sakaguchi Gaku、Hattori Satoko、Song Wen-Jie、Sora Ichiro、Nabeshima Toshitaka、Katsuura Goro、Noda Masaharu
    • Journal Title

      PLOS ONE

      Volume: 14 Issue: 8 Pages: e0221205-e0221205

    • DOI

      10.1371/journal.pone.0221205

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 聴覚皮質の構造と機能2021

    • Author(s)
      宋 文杰
    • Organizer
      第15回日本分子イメージング学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Temporal patterns of neuronal responses to repeated stimuli in the mouse auditory cortex.2021

    • Author(s)
      Zhou B, Tomioka R, Song W-J
    • Organizer
      The 8th Annual Meeting of the Society for Bioacoustics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Postnatal refinement of inhibitory and excitatory colliculo-thalamic synapses in mice.2020

    • Author(s)
      CHEN Y-T, TAKEMOTO M, TOMIOKA R, SONG W-J
    • Organizer
      第43回日本神経科学大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Multilevel innervations to the auditory pathway by GABAergic neurons in the mouse basal ganglia2019

    • Author(s)
      Ryohei Tomioka, Bo Zhou, Kenji Sakimura, Yuchio Yanagawa, Nobuaki Tamamaki, Wen-Jie Song
    • Organizer
      Neuro2019
    • Related Report
      2019 Research-status Report
  • [Book] 生き物と音の事典2019

    • Author(s)
      生物音響学会
    • Total Pages
      464
    • Publisher
      朝倉書店
    • ISBN
      9784254171679
    • Related Report
      2019 Research-status Report
  • [Remarks] 熊本大学生命科学研究部知覚生理学教室

    • URL

      http://srv02.medic.kumamoto-u.ac.jp/dept/physiol2/index.html

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
  • [Remarks] 業績|熊本大学生命科学研究部知覚生理学教室

    • URL

      http://srv02.medic.kumamoto-u.ac.jp/dept/physiol2/publications.html

    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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