不确定性不容忍个体中不确定性奖励评估的基础神经动力学
Guanglong Liu1,2, Yongyi Liang1,2, Wendeng Yang1,2
1Department of Psychology, Guangzhou University, Guangzhou, China.
Psychophysiology
|September 1, 2025
概括
对于不确定性有很高的不耐受 (IU) 个体对不确定性表现出普遍的厌恶. 它们对不可预测奖励的神经反应与低IU的不同,特别是在奖励处理的后期阶段.
科学领域:
- 神经科学
- 心理学
- 认知科学
背景情况:
- 不确定性不耐受 (IU) 是内化障碍的一个跨诊断因素.
- 研究重点是IU对威胁处理的影响,对奖励处理的关注较少.
- 了解IU在奖励处理中的作用对于内化疾病研究至关重要.
研究的目的:
- 研究高与低IU个体中不确定的奖励处理的神经动态.
- 检查不同类型的不确定性 (概率,时间,大小) 如何影响奖励评估.
- 在奖励反过程中识别与IU相关的神经反应的差异.
主要方法:
- 使用脑电图 (EEG) 的事件相关潜力 (ERP) 研究.
- 高IU组 (N=35) 与低IU组 (N=36) 的比较.
- 参与者完成了可预测与不可预测奖励交付的猜测任务 (概率,时间,大小).
主要成果:
- 高IU组表现出对不确定性的行为厌恶.
- 低IU组,而不是高IU,在早期奖励处理中表现出对可预测和不可预测奖励的敏感性 (奖励积极性),特别是对于时间的不确定性.
- 与低IU相比,高IU组在晚期奖励处理 (P3) 中对可预测性和不可预测性表现出更大的敏感性,不论不确定性类型如何.
结论:
- 个体IU的差异与不确定的奖励的独特神经处理有关.
- 结果表明高IU的不确定性处理中存在价值独立的不适应性.
- 这项研究强调了在理解基于奖励的决策和内化障碍时考虑UI的重要性.
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