Asymmetric neurocognitive representation of ethnic in-group/out-group faces

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2009,（12）
• 页码范围: 2076-2081
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s11434-009-0357-2

摘要

To investigate asymmetric neurocognitive representation of ethnic in-group and out-group members,we recorded event-related potentials (ERPs) to faces in a perceptual task after the faces had been primed with positive or negative affective links. The affective link priming did not influence the ERPs to ethnic out-group faces. However, relative to the positive affective link priming, the negative affective link priming increased the amplitudes of an early frontal negativity (N100) and a following central negativity but decreased the amplitude of a late positive potential elicited by ethnic in-group faces.Moreover, the N100 amplitude correlated with the degree of negative attitudes towards ethnic in-group faces. The findings suggest that multiple-level neural mechanisms are involved in individuation of heterogeneous ethnic in-group faces.