Abstract：
Impaired facial expression perception is a core element in depression, but the underlying mechanism remains controversial. This event-related potential study investigated how attention modulates facial expression perception in depression using a nonclinical sample. A group of healthy controls (HC, N = 39) and a group of individuals with subsyndromal depression (SD, N = 39) categorized faces based on either facial expression (happy vs. sad) or gender (male vs. female). Behaviorally, the SD group was less sensitive to the emotional valence of facial expression than the HC group when their attention was directed to facial expression, as revealed by comparable subjective ratings and accuracy rates in response to facial expressions. When attention was directed towards facial gender, the SD group versus the HC group showed a negative bias, as revealed by a faster N170 for sad faces than happy faces. Together, our findings suggest that attention plays a role in understanding the relationship between depression and facial expression perception.
摘要：
受损的面部表情感知是抑郁症的核心要素，但是潜在的机制仍然存在争议。这项与事件相关的潜在研究使用非临床样本调查了注意力如何调节抑郁症患者的面部表情感知。一组健康对照(HC，N=39）和一组患有亚综合征抑郁症的个体（SD，N=39)根据任一面部表情(快乐与悲伤)或性别(男性vs.female).行为上,当注意力集中于面部表情时，SD组对面部表情的情绪效价比HC组低，通过对面部表情的可比主观评分和准确率来揭示。当注意力转向面部性别时，SD组与HC组相比显示出负偏倚，正如N170显示的那样，悲伤的面孔比快乐的面孔更快。一起,我们的发现表明，注意力在理解抑郁和面部表情感知之间的关系中起作用。
