贝叶斯对群体和参与者水平效应大小的多层次建模:在厌恶性调节期间,与EEGα功率相比,瞳孔扩张的个体间差异更大
Sarah M Gardy1, Jourdan J Pouliot1, Faith E Gilbert1
1Department of Psychology, University of Florida, Gainesville, Florida.
bioRxiv : the preprint server for biology
|November 26, 2025
概括
这项研究比较了电脑电图 (EEG) 的α波段功率和在厌恶条件下瞳孔扩张. 瞳孔膨胀显示出比EEGα功率更大的个体变异性,影响了个性化学习研究.
科学领域:
- 认知神经科学 认知神经科学
- 心理生理学 心理生理学
背景情况:
- 偏向性调节可靠地改变电脑电图 (EEG) 的α频段功率和瞳孔扩张.
- 这些标志物用于研究条件威胁,但受试者级别的变异性仍然不清楚.
- 之前的研究表明,EEGα和瞳孔扩张捕获互补信息.
研究的目的:
- 量化和比较EEG阿尔法带功率和学生计的条件效应大小在个体参与者层面上的变化.
- 直接比较这两个生理标记在不同的条件化范式的同一参与者.
主要方法:
- 用贝叶斯的多层次建模来分析EEGα频段功率和学生计数据.
- 通过使用视觉和听觉线索,收集了两种厌恶条件范式的数据.
- 在组和个人参与者层面上检查了效应大小.
主要成果:
- 脑电图阿尔法带功率和瞳孔扩张在组级表现出类似的效果大小.
- 与EEGα功率相比,瞳孔扩张的效果大小在参与者层面的变异性显著更高.
- 这一发现在视觉和听觉调节范式中一致.
结论:
- 瞳孔扩张在对厌恶条件的反应中表现出比EEGα功率更大的个体间变异性.
- 这些发现对于临床和个体间差异研究至关重要,需要参与者级效应量化.
- 了解这种变异性可以帮助将生理反应与焦虑等差异联系起来.
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