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Neural mechanisms underlying inequity aversion in non-human primates

Research Project

Project/Area Number 21H00966
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 10040:Experimental psychology-related
Research InstitutionNational Institute for Physiological Sciences

Principal Investigator

Noritake Atsushi  生理学研究所, システム脳科学研究領域, 助教 (80407684)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2022: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
Fiscal Year 2021: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Keywords不公平嫌悪 / サル / 島皮質 / 内側前頭前野 / マカクザル / 報酬分配 / 社会的情動 / 霊長類
Outline of Research at the Start

我々は不公平を嫌う。この不公平嫌悪は、社会性の高い霊長類でみられる情動で、集団の維持に重要である。本研究では、申請者らが開発してきたサル2個体を同時に用いる実験体系を用い、不公平嫌悪に重要と考えられる内側前頭前野および島皮質から成る神経回路網をターゲットとして、複数脳部位の多点同時神経活動記録や化学遺伝学的手法による神経回路操作を行い、不公平嫌悪生成の脳内制御機構の解明を目指す。

Outline of Final Research Achievements

Humans and other primates exhibit an aversion to inequity. To investigate neural mechanisms underlying this aversion, we designed a reward distribution experiment based on the ultimatum game for macaques and recorded multi-site activity from the medial prefrontal cortex and the insular cortex. Our findings revealed that monkeys, like humans, exhibit behaviors indicating an aversion to inequity. We identified distinct neural cell groups in the medial prefrontal cortex and the anterior insular cortex responsible for processing information related to inequity aversion. Furthermore, when expressing inequity aversion, we observed strong coordinated activity in the theta wave band, indexed by the coherence, between the medial prefrontal cortex and the insular cortex was observed. These results suggest that the medial prefrontal cortex and the insular cortex are strongly associated with the expression of behaviors indicating an aversion to inequity.

Academic Significance and Societal Importance of the Research Achievements

本研究は、集団生活をおこなう種の中で電気生理学的に不公平嫌悪の神経機序について調べた初めての研究であり、ヒトを対象とした非侵襲的手法や不公平嫌悪様行動が未だ認められていないげっ歯類を対象とした研究では得られない知見を得ることができた。本研究で得た内側前頭前野および島皮質の電気生理学的知見は、自他の報酬・行動選択情報処理および神経情報集団で生活する霊長類の社会的行動を説明し得る数理モデルの端緒となり得る。また、自閉症や統合失調症などの社会性に支障をきたす傾向にある精神疾患や気分障害の人を対象として、神経回路操作や介入に関する知見を提供でき、臨床面においても実用的であるといえる。

Report

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

    (9 results)

All 2023 2022

All Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 6 results)

  • [Presentation] Impaired social reward valuation by chemogenetic inhibition of the primate prefronto-hypothalamic pathway2023

    • Author(s)
      Asushi Noritake
    • Organizer
      CIN-NIPS-Asia Pacific Systems Neuroscience Symposium
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 社会的報酬処理における皮質―皮質下間の部分空間相互作用2023

    • Author(s)
      則武厚, 田中宏和, 磯田昌岐
    • Organizer
      第100回日本生理学会大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 内側前頭前野の神経細胞は他者の報酬予測誤差信号を処理しているか?2022

    • Author(s)
      則武厚, 磯田昌岐
    • Organizer
      Neuro2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] サル上側頭溝中間部における自己と他者の動作情報表現2022

    • Author(s)
      二宮 太平, 則武 厚, 磯田 昌岐
    • Organizer
      Neuro2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Selective blockade of the primate cortico-subcortical pathway impaired the processing of social reward information2022

    • Author(s)
      Atsushi Noritake, Taihei Ninomiya, Kenta Kobayashi, Masaki Isoda
    • Organizer
      Society for Neuroscience Annual Meeting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 嫉妬生成の基盤となる自己および他者の報酬情報の脳内処理について2022

    • Author(s)
      則武厚
    • Organizer
      次世代脳冬のシンポジウム2022
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] マカクザル皮質―皮質下の選択的神経路遮断実験における多点電極を用いた神経活動記録と解析の実際2022

    • Author(s)
      則武厚
    • Organizer
      第4回サル脳新技術研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 社会的情動の基盤となり得る自己と他者の報酬情報の脳内処理2022

    • Author(s)
      則武厚
    • Organizer
      感情のかけ橋シンポジウム2022
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Neural mechanisms for social reward valuation and monitoring in the macaque brain2022

    • Author(s)
      Atsushi Noritake
    • Organizer
      10th CIN (Tuebingen Univ) -NIPS symposium
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited

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

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