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Neural mechanisms underlying inequity aversion in non-human primates

非人类灵长类动物不平等厌恶的神经机制

基本信息

批准号：
21H00966
负责人：
則武厚
金额：
$ 11.23万
依托单位：
National Institute for Physiological Sciences
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2021
资助国家：
日本
起止时间：
2021-04-01 至 2024-03-31
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21H00966/
关键词：
不公平嫌悪サル島皮質内側前頭前野社会的情動霊長類

项目摘要

本年度は、不公平課題遂行下における１）行動実験条件を新たに設け、行動結果の解析をおこなった。さらに、２）内側前頭前野と島皮質を同定し、これら領域の神経活動をサル2頭のうち1頭から記録開始した。また、３）並行して脈波の計測を開始した。実験課題は、2頭のサルが参加する報酬分配課題の一種で、内1頭 (提案者) がまず自己と他者の報酬配分が異なる選択肢の内一つを選び、その後、もう1頭 (応答者) がその選択に対して受諾か拒否の選択をおこなう。応答者が受諾すれば、提案者が選択した報酬が各サルに配分されたが、応答者が拒否すれば、どちらのサルも報酬は貰えなかった。提案者と応答者の役割は数試行で交代し、不公平な報酬分配の選択肢の回避をおこないあうという互恵性戦略が一つの適した戦略になるよう設定された。１）に関し、他者がいない単独条件を加えたところ、どちらのサルも自分の報酬取り分がほぼ最大になるような選択肢をとった。興味深いことに、単独条件で不公平課題をおこなった後、2頭で課題をおこなうと、自己の報酬がより多い選択肢を取る傾向となった。しかし、これは不公平な報酬分配として、応答者の拒否率が増加した。その後数回のセッションで、提案者は応答者にも報酬を分配する選択肢をとる傾向を取り戻した。このように、マカクザルにおいても2者の関係はダイナミックに変化し、自己中心的な報酬分配を抑制する手段を提供した場合には、それを有効活用し、自己中心的な報酬分配行動の頻度が減少し、平衡状態に陥ることが初めて示された。２）および３）に関しては、今後ターゲット領域からの同時記録セッション数を増やし、各領域の自己・他者の報酬情報処理機構や行動選択処理機構、提案の承諾・拒否時における情報処理機構、を同定する予定である。

In the current year, the unfair issue has been implemented. 1) Action conditions are updated, and the results of the actions are analyzed. In front of you, 2) in front of the market, you have the same information, and you have the same activity in the field. (3) the parallel operation of the radio wave program will begin. In the first round of the project, 2 years old to participate in the project on the distribution of remuneration, and within 1 year (the proposer), in the first part of the project, 2 years old to participate in the question of salary distribution, 2 years old to participate in the project, 2 years old to participate in the project, 2 years old to participate in the project, 1 year to participate in the project, 1 year to participate in the project, 2 years old to participate in the project, 1 year to participate in the salary distribution project, 1 year to participate in the salary distribution project, 1 year to participate in the salary distribution project, 1 year to participate in the salary distribution project, 1 year to participate in the salary distribution project, 1 year to participate in the The interviewees will be accepted by the respondents, the sponsors will choose to distribute the remuneration, the respondents will refuse to accept the compensation, and the respondents will be asked to pay the remuneration. The proposer, the respondent, the number of employees in the service, the number of employees in the service, the number of accounts, the unfair salary distribution, the avoidance of compensation, the avoidance of compensation, the reciprocity of service, the number of employees, and the unfair distribution of remuneration. 1) if you don't know what to do, if you don't want to pay for your own work, you will be paid a lot of money. After a deep taste of the situation, the unfair issue of the sole condition, after the first round of the trial, the second round of the question, the amount of money you pay, the amount of money you pay, the amount of money you have to pay, the amount of money you have to pay, and the amount of money you have to pay. The rate of rejection of the distribution of remuneration, the rate of rejection of the respondents, the rate of rejection, and the rate of rejection. A few times later, the proposer asked the respondent to pay the fee, and the proposer asked the respondent to get the money from the newspaper. If there is a situation in the center, there is a lack of information on the distribution of payroll and payroll in their own center, and that the distribution of remuneration in their own center is highly effective. (2) in the future, we will record the number of people in the field at the same time, and in each field, we should choose the mechanism for the selection of the action, the proposal to accept the rejection of the agreement, and the agreement to make the decision.