瞳孔大小编码在探索期间的不确定性
Haoxue Fan1, Taylor Burke1, Deshawn Chatman Sambrano1
1Harvard University, Cambridge, MA.
Journal of cognitive neuroscience
|June 29, 2023
概括
瞳孔大小反映了决策过程中的不确定性,指导探索策略. 这项研究将瞳孔相关的兴奋与人们如何探索最大化奖励的选择联系起来.
科学领域:
- 认知神经科学 认知神经科学
- 决策科学 决策科学 决策科学
背景情况:
- 探索对于决策和长期奖励最大化至关重要.
- 以前的研究表明,不确定性会影响勘探策略.
研究的目的:
- 研究与瞳孔相关的兴奋系统在不确定性导向探索中的作用.
- 检查瞳孔扩张如何与不同的探索策略有关.
主要方法:
- 测量了48名参与者在双臂强盗任务期间的瞳孔膨胀.
- 在相对不确定性,总不确定性和价值差异方面分析了勘探策略.
主要成果:
- 观察到一种对各种不确定性指标敏感的混合勘探战略.
- 在瞳孔大小和总不确定性之间发现了正相关性.
- 证明学生衍生不确定性估计可以改善选择预测.
结论:
- 瞳孔大小编码用于探索决策的不确定性估计.
- 这一结果支持了基位 - 北上腺素系统在以不确定性为导向的探索中的作用.
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