Du Xue, Yao Li, Sun Le, Chen Xiaoyi, Jiang Jun
College of Educational Science, Chongqing Normal University, Chongqing, China.
Key Laboratory of Applied Psychology, Chongqing Normal University, Chongqing, China.
Cereb Cortex. 2024 May 2;34(5). doi: 10.1093/cercor/bhae222.
Social comparison is a common phenomenon in our daily life, through which people get to know themselves, and plays an important role in depression. In this study, event-related potential (ERP) was used to explore the temporal course of social comparison processing in the subthreshold depression group. Electrophysiological recordings were acquired from 30 subthreshold depressed individuals and 31 healthy individuals while they conducted the adapted dot estimation task. The ERP results revealed that there was a significant difference of feedback-related negativity (FRN) in the process of social comparison. Especially only in the subthreshold depression, the FRN amplitudes of worse off than some, better off than many comparisons were larger than those of upward comparisons and downward comparisons. Our results suggested that the abnormal reward sensitivity for worse off than some, better off than many comparisons might be prodromal symptoms in the subthreshold depression.
社会比较是我们日常生活中的一种常见现象，人们通过它来认识自己，并且在抑郁症中起着重要作用。在本研究中，事件相关电位（ERP）被用于探究亚阈值抑郁组中社会比较加工的时间进程。在30名亚阈值抑郁个体和31名健康个体进行适应性点估计任务时，采集了他们的电生理记录。ERP结果显示，在社会比较过程中，反馈相关负波（FRN）存在显著差异。特别是仅在亚阈值抑郁中，比一些人差、比许多人好的比较的FRN波幅大于向上比较和向下比较的FRN波幅。我们的结果表明，比一些人差、比许多人好的比较中异常的奖励敏感性可能是亚阈值抑郁的前驱症状。
