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Analysis of neuronal circuit mechanisms regulating motivated behavior in the dopamine reward system

Research Project

Project/Area Number 17K14938
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Neurophysiology / General neuroscience
Research InstitutionOsaka City University

Principal Investigator

Matsumoto Hideyuki  大阪市立大学, 大学院医学研究科, 助教 (50511383)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords電気生理学 / 光遺伝学 / 神経回路 / ドーパミン系 / ドーパミン細胞 / 意欲 / 学習 / 報酬系 / ドーパミン / ラット / 報酬 / 神経科学 / 電気生理 / げっ歯類
Outline of Final Research Achievements

It has been thought that information processing in the midbrain dopamine system plays important roles in regulating motivated behavior. However, the relationships and causalities between neuronal activities of specific cell-types and specific aspects of motivated behavior remain elusive. Combining in vivo large-scale single-neuron recordings and optogenetics, we unambiguously discriminated dopamine from non-dopamine neurons while recording from ventral tegmental area when animals freely performed a self-paced decision-making task. We found the diversities of ventral tegmental area neurons depending on the vigor of motivation. Our results will reveal the circuit level mechanisms for the regulation of motivated behavior with super-high temporal resolutions and cell-type specificities.

Academic Significance and Societal Importance of the Research Achievements

意欲の制御に関わる神経細胞種の活動を確実に同定することで、神経回路レベルの具体的な情報処理機構を解明できると期待される。
電気生理学と光遺伝学を組み合わせた本研究技術を用いることで、意欲やその他のさまざまな脳機能に関する情報処理のメカニズムを高い時間・空間解像度から明らかにできると期待される。
将来的に、意欲などに異常がみられる精神障害に対する治療ターゲット(神経回路)が明確になり、副作用の少ない医療応用につながると期待される。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (8 results)

All 2019 2018 Other

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (5 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results) Remarks (1 results)

  • [Journal Article] Identification of midbrain dopamine neurons using features from spontaneous spike activity patterns2019

    • Author(s)
      Tsuyoshi Ishikawa, Keiji Miura, Hideyuki Matsumoto
    • Journal Title

      IEEE EMBC2019

      Volume: accepted

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Discriminating dopamine from non-dopamine neurons based on the spontaneous electrical activities2018

    • Author(s)
      Tsuyoshi Ishikawa, Hideyuki Matsumoto, Keiji Miura
    • Journal Title

      Proc of IEEE Brain Initiative Workshop on Advanced NeuroTechnologies 2018

      Volume: -

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 報酬に基づく意思決定における腹側被蓋野ニューロンの情報処理2019

    • Author(s)
      松本英之、水関健司
    • Organizer
      第42回日本神経科学大会/第62回日本神経化学大会(NEURO2019)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 自発電気活動に基づくドーパミンと非ドーパミンニューロンの判別2019

    • Author(s)
      三浦佳二、石川剛史、松本英之
    • Organizer
      第42回日本神経科学大会/第62回日本神経化学大会(NEURO2019)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 中脳ドーパミンニューロンの報酬コンテクストに依存した信号モード変化2018

    • Author(s)
      松本英之
    • Organizer
      生理研研究会 情動研究会「情動の神経回路機構とその破綻」
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 柔軟に学習する脳のしくみ:意思決定におけるドーパミン信号の役割2018

    • Author(s)
      松本英之
    • Organizer
      関西学院大学理工学部講演会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 学習および動機づけに関与するドーパミン神経系の情報処理機構2018

    • Author(s)
      松本英之
    • Organizer
      大阪大学人間科学研究科 生物と行動セミナー
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Remarks] researchmap

    • URL

      https://researchmap.jp/hideyukimatsumoto/?lang=japanese

    • Related Report
      2018 Annual Research Report

URL: 

Published: 2017-04-28   Modified: 2020-03-30  

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