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Long-term academic stress enhances early processing of facial expressions
Zhang, Liang1; Qin, Shaozheng2,3; Yao, Zhuxi1,4; Zhang, Kan1; Wu, Jianhui1
2016-11-01
Source PublicationINTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY
ISSN0167-8760
SubtypeArticle
Volume109Issue:0Pages:138-146
Abstract

Exposure to long-term stress can lead to a variety of emotional and behavioral problems. Although widely investigated, the neural basis of how long-term stress impacts emotional processing in humans remains largely elusive. Using event-related brain potentials (ERPs), we investigated the effects of long-term stress on the neural dynamics of emotionally facial expression processing. Thirty-nine male college students undergoing preparation for a major examination and twenty-one matched controls performed a gender discrimination task for faces displaying angry, happy, and neutral expressions. The results of the Perceived Stress Scale showed that participants in the stress group perceived higher levels of long-term stress relative to the control group. ERP analyses revealed differential effects of long-term stress on two early stages of facial expression processing: 1) long-term stress generally augmented posterior P1 amplitudes to facial stimuli irrespective of expression valence, suggesting that stress can increase sensitization to visual inputs in general, and 2) long-term stress selectively augmented fronto-central P2 amplitudes for angry but not for neutral or positive facial expressions, suggesting that stress may lead to increased attentional prioritization to processing negative emotional stimuli. Together, our findings suggest that long-term stress has profound impacts on the early stages of facial expression processing, with an increase at the very early stage of general information inputs and a subsequent attentional bias toward processing emotionally negative stimuli. (C) 2016 Elsevier B.V. All rights reserved.

KeywordLong-term stress Event-related potentials Facial expression P1 P2
DOI10.1016/j.ijpsycho.2016.08.010
Indexed BySCI ; SSCI
Language英语
WOS Research AreaPsychology ; Neurosciences & Neurology ; Physiology
WOS SubjectPsychology, Biological ; Neurosciences ; Physiology ; Psychology ; Psychology, Experimental
WOS IDWOS:000387836300017
WOS HeadingsSocial Sciences ; Science & Technology ; Life Sciences & Biomedicine
WOS KeywordEVENT-RELATED POTENTIALS ; PERCEIVED STRESS ; GENDER-DIFFERENCES ; BRAIN POTENTIALS ; SOCIAL ANXIETY ; VISUAL-STIMULI ; TIME-COURSE ; ERP ; CORTISOL ; FACES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/20930
Collection中国科学院行为科学重点实验室
Affiliation1.Chinese Acad Sci, Inst Psychol, Key Lab Behav Sci, 16 Lincui Rd, Beijing, Peoples R China
2.Beijing Normal Univ, IDG McGovern Inst Brain Res, Beijing, Peoples R China
3.Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Liang,Qin, Shaozheng,Yao, Zhuxi,et al. Long-term academic stress enhances early processing of facial expressions[J]. INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY,2016,109(0):138-146.
APA Zhang, Liang,Qin, Shaozheng,Yao, Zhuxi,Zhang, Kan,&Wu, Jianhui.(2016).Long-term academic stress enhances early processing of facial expressions.INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY,109(0),138-146.
MLA Zhang, Liang,et al."Long-term academic stress enhances early processing of facial expressions".INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY 109.0(2016):138-146.
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