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Anatomical analysis of neuronal network for accumulation of evidence in decision making and NMDA receptor involvement

Research Project

Project/Area Number 20K07720
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 51020:Cognitive and brain science-related
Research InstitutionUniversity of Yamanashi

Principal Investigator

Ishida Maho  山梨大学, 大学院総合研究部, 助教 (80362086)

Co-Investigator(Kenkyū-buntansha) 宇賀 貴紀  山梨大学, 大学院総合研究部, 教授 (50372933)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsラット / 知覚意思決定 / 訓練 / 意思決定 / 情報蓄積 / 神経回路 / NMDA受容体
Outline of Research at the Start

ラットに知覚意思決定課題を訓練し、in vivo 2光子Ca2+イメージングにより同定したPPCの情報蓄積神経細胞を、蛍光蛋白遺伝子導入により蛍光標識する。脳切片標本上で、情報蓄積神経細胞における再帰的神経回路の形成を調べる。またPPCでの情報蓄積神経細胞におけるNMDA受容体発現を免疫組織学的に解析する。

Outline of Final Research Achievements

Head-fixed Long-Evans rats were trained to perform a perceptive decision making task. In the task, rats select which pedal to release as a result of decision making according to an auditory stimulus presented for 1 second. The auditory stimulus in each trial is a total of 40 clicks composed of left and right clicks, the ratio of which is preselected randomly. For example, a click rate of 39:1 is used for an easy trial and 21:19 is used for a difficult trial. The accuracy was about 80% in an easy task and was gradually decreased to about 40-50% in a difficult task.

Academic Significance and Societal Importance of the Research Achievements

ラットは脳が比較的大きく、昔から行動実験や精神疾患のモデル多用されてきた歴史がある。さらに近年遺伝子改変モデル動物の増加も著しい。本研究ではラットを用いて、知覚意思決定課題を行わせる訓練方法を確立できた。これにより、電気生理学的な解析、またカルシウムセンサー蛋白を用いた神経細胞活動の画像解析に発展させることで、知覚意思決定時の脳内システムについて解剖学的知見を含む新たな知見を得ることにつながると期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (1 results)

All 2022

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results)

  • [Journal Article] Prediction-Related Frontal-Temporal Network for Omission Mismatch Activity in the Macaque Monkey2022

    • Author(s)
      Suda Yuki、Tada Mariko、Matsuo Takeshi、Kawasaki Keisuke、Saigusa Takeshi、Ishida Maho、Mitsui Tetsuo、Kumano Hironori、Kirihara Kenji、Suzuki Takafumi、Matsumoto Kenji、Hasegawa Isao、Kasai Kiyoto、Uka Takanori
    • Journal Title

      Frontiers in Psychiatry

      Volume: 13 Pages: 557954-557954

    • DOI

      10.3389/fpsyt.2022.557954

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

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