机会成本决定了自由操作的行动启动延迟,并预测了冷漠
Akshay Nair1,2, Ritwik K Niyogi2, Fei Shang2,3
1Huntington's Disease Centre, UCL Queen Square Institute of Neurology, University College London, Russell Square House, 10-12 Russell Square, London, WC1B 5EH, UK.
Psychological medicine
|June 13, 2023
概括
时间的机会成本 (OCT) 影响自主发起的行动. 具有较高冷漠度的个体对OCT表现出更大的敏感性,这影响了他们的奖励感知和行为.
科学领域:
- 神经科学是一个神经科学.
- 计算精神病学是一种计算精神病学.
- 行为经济学是一种行为经济学.
背景情况:
- 漠不关心是一种鲜为人知的神经精神病症状,其特点是自我发起的行为受损.
- 时间的机会成本 (OCT) 被假设为将自我发起的行为与动机状态联系起来.
- 海外国家和地区量化了每单位时间的奖励,当没有采取行动时.
研究的目的:
- 探讨海外国家和地区,自我启动和冷漠之间的关系.
- 测试假设较高的OCT导致更短的作用延迟.
- 为了确定具有较高OCT敏感度的个体是否表现出更高的冷漠.
主要方法:
- 一个新的行为任务",渔民游戏"被用来调节OCT.
- 参与者自主发起行动以收集奖励或执行非奖励任务.
- 使用"平均奖励"强化学习的计算建模分析了两项研究 (n=21实验室,n=90在线) 的动作延迟和冷漠.
主要成果:
- 行动启动延迟在很大程度上是由OCT的变化驱动的.
- 具有较高冷漠度的个体对OCT变异,特别是年轻成年人的敏感性增加.
- 计算建模表明,由于奖励灵敏度提高,冷漠的个体感觉到主观OCT发生了更大的变化.
结论:
- 在理解自由操作行动启动时,CTN是关键的变量.
- 这些发现提供了对无动于衷的基础计算机制的新见解.
- 这项研究突出了OCT在动机缺陷和自我主动行为中的作用.
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