Department of Higher Nervous Activity and Psychophysiology, Saint Petersburg State University, 199034, University Emb.7-9, Saint Petersburg, Russia.
Soc Cogn Affect Neurosci. 2013 Oct;8(7):756-63. doi: 10.1093/scan/nss064. Epub 2012 Jun 7.
Humans often change their beliefs or behavior due to the behavior or opinions of others. This study explored, with the use of human event-related potentials (ERPs), whether social conformity is based on a general performance-monitoring mechanism. We tested the hypothesis that conflicts with a normative group opinion evoke a feedback-related negativity (FRN) often associated with performance monitoring and subsequent adjustment of behavior. The experimental results show that individual judgments of facial attractiveness were adjusted in line with a normative group opinion. A mismatch between individual and group opinions triggered a frontocentral negative deflection with the maximum at 200 ms, similar to FRN. Overall, a conflict with a normative group opinion triggered a cascade of neuronal responses: from an earlier FRN response reflecting a conflict with the normative opinion to a later ERP component (peaking at 380 ms) reflecting a conforming behavioral adjustment. These results add to the growing literature on neuronal mechanisms of social influence by disentangling the conflict-monitoring signal in response to the perceived violation of social norms and the neural signal of a conforming behavioral adjustment.
人类常常因为他人的行为或意见而改变自己的信念或行为。本研究使用人类事件相关电位（ERP）来探索社会从众是否基于一般的绩效监测机制。我们假设，与规范群体意见的冲突会引发与绩效监测相关的反馈相关负波（FRN），并随后调整行为。实验结果表明，个体对面部吸引力的判断会根据规范群体的意见进行调整。个体意见与群体意见不匹配会引发额中央负向偏转，最大峰值在 200 毫秒处，类似于 FRN。总体而言，与规范群体意见的冲突会引发一连串的神经元反应：从反映与规范意见冲突的早期 FRN 反应，到反映顺应性行为调整的后期 ERP 成分（在 380 毫秒时达到峰值）。这些结果通过分离对违反社会规范的感知的冲突监测信号和顺应性行为调整的神经信号，为社会影响的神经机制的不断增长的文献做出了贡献。
