Center for Brain Disorder and Cognitive Science, Shenzhen Key Laboratory of Affective and Social Cognitive Science, Shenzhen University, Shenzhen, 518060, China.
Sci Rep. 2019 Aug 12;9(1):11605. doi: 10.1038/s41598-019-48179-0.
Prolonged exposure to stress has a wide effect on the brain and cognition. Error processing, as one of the crucial components of executive function, plays an important role in cognitive and behavior control. However, to date, there is little research addressing the relationship between chronic perceived stress and error processing. The present study aims to explore the relationship between chronic perceived stress by the Cohen Perceived Stress Scale (PSS) and different stages of error processing by the method of Event-Related Potential (ERP). The error processing was tested in a classical auditory Go/NoGo paradigm, and ERP components including early Error-related Negativity (ERN) and late Error Positivity (Pe) were computed as the indices of error processing. The results showed that the PSS score was positively correlated with the Pe amplitude but not with the ERN amplitude. The correlation between PSS and the Pe amplitude holds true even after controlling the trait anxiety and depression symptoms. These results suggest that the higher the chronic stress level, the more sensitive the individuals are to their own errors as well as the more emotional/motivated attention the individuals distributed to their own errors.
长期暴露于压力会对大脑和认知产生广泛影响。错误处理作为执行功能的关键组成部分之一，在认知和行为控制中起着重要作用。然而，迄今为止，很少有研究探讨慢性感知压力与错误处理之间的关系。本研究旨在通过事件相关电位（ERP）方法探讨科恩感知压力量表（PSS）测量的慢性感知压力与不同阶段错误处理之间的关系。通过经典的听觉 Go/NoGo 范式测试错误处理，计算早期错误相关负波（ERN）和晚期错误正波（Pe）等 ERP 成分作为错误处理的指标。结果表明，PSS 评分与 Pe 振幅呈正相关，与 ERN 振幅无关。即使控制特质焦虑和抑郁症状，PSS 与 Pe 振幅之间的相关性仍然成立。这些结果表明，慢性压力水平越高，个体对自身错误越敏感，个体对自身错误的情绪/动机注意力越高。
