Fearful faces evoke a larger C1 than happy faces in executive attention task: An event-related potential study

NEUROSCIENCE LETTERS

卷:526

Article

Zhu, Xiang-ru³  Luo, Yue-jia^1,2 

[1] Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100875, Peoples R China

[2] Chinese Acad Sci, Inst Psychol, Beijing 100101, Peoples R China

[3] Henan Univ, Dept Psychol, Kaifeng, Peoples R China

关键词: Fear;    Happy;    Executive attention;    C1;   

DOI  :  10.1016/j.neulet.2012.08.011

来源: Elsevier

【 摘 要 】

Neural responses to negatively valenced stimuli such as fear are enhanced relative to positive or neutral stimuli, reflecting an emotional negativity bias. In the present study, high time resolution event related potential (ERP) techniques were used, to investigate whether C1, the earliest visually evoked potential, is modulated by emotional valence in the executive attention network. Subjects were instructed to respond to the expression of the face, while ignoring the content of word, in an emotional face-word Stroop task. We demonstrated modulation of C1 in response to fearful faces versus happy faces. The differentiation between detection of fearful and happy faces emerged at 60-90 ms after the stimulus onset at the posterior electrode sites, and this early differentiation occurred regardless of whether the subject had viewed a congruent or incongruent trials (i.e., happy face with fear label or vice versa). The present results indicate that faces with a fearful expression capture processing resources at an early sensory processing stage. (C) 2012 Elsevier Ireland Ltd. All rights reserved.

【 授权许可】

Free