持续决定等待未来的奖励是由前-海马预测动态指导的
Reiko Shintaki1, Daiki Tanaka1, Shinsuke Suzuki2,3
1Department of Biosciences and Informatics, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan.
Cerebral cortex (New York, N.Y. : 1991)
|May 27, 2024
概括
人类不断地根据奖励的预期来决定是否留在或离开环境. 前额前皮层和海马体中的大脑活动指导这些停留-休假决策,受到奖励延迟和大小的影响.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 决策科学 决策科学 决策科学
背景情况:
- 生存取决于管理不确定性,并对未来的奖励做出最佳决策.
- 持续停留假的决定涉及到平衡当前环境探索与潜在的未来收益.
- 在奖励预期中的动态人类决策背后的神经机制在很大程度上仍未被探索.
研究的目的:
- 调查奖励预期期间持续停留休假决策的神经基础.
- 识别与动态调整决策相关的大脑区域和活动模式,等待未来的奖励.
主要方法:
- 利用功能神经成像来跟踪在持续停留休假任务期间的大脑活动.
- 监控参与者在等待延迟奖励时留在或离开环境的动态决定.
- 与行为选择,奖励参数 (延迟,大小) 和决策策略相关联的神经活动模式.
主要成果:
- 前额前皮层 (aPFC),腹侧额前皮层 (vlPFC) 和海马体的预测活动与持续的停留休假决定相关.
- 增加的PFC预测活动预测在环境中保持,而活动减少预测离开.
- 更长的奖励延迟和更小的奖励大小导致更频繁和更早的决定停止等待.
- 在新环境中,vlPFC和海马体在延迟奖励预期期间表现出预期活动.
- 离开策略师表现出增强的aPFC和vlPFC活动,而停留策略师表现出增强的海马活动.
结论:
- 动态的前-海马预测活动是预测未来奖励时的持续决策的基础.
- aPFC在保持与当前环境的接触,以获得未来的回报方面发挥着关键作用.
- vlPFC和海马体参与预测奖励,特别是在新的环境和特定决策策略中.
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