Temporal course of emotional negativity bias: An ERP study

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	Temporal course of emotional negativity bias: An ERP study
	Huang, YX ; Luo, YJ; Y. J. Luo
摘要	There is considerable evidence that people are especially sensitive to emotionally negative materials. However, the temporal course of the negativity bias is still unclear. To address this issue, we observed the changes of P2, late positive components (LPC) and lateralized readiness potential (LRP) under positive, negative and neutral conditions, with International Affective Picture System (IAPS) pictures as emotional stimuli. We found that the amplitude of P2 in the negative block was significantly larger than that in the positive block, indicating that the attentional negativity bias occurred very early in emotion perception. The LPC amplitude evoked by negative pictures was larger than that by positive and neutral pictures, suggesting that the negativity bias also occurred in a later evaluation stage of emotion processing. The response-locked LRP interval was shortest in the block of negative pictures, indicating that the negative contents elicited a reaction priming effect. Above all, this research showed that emotional negativity bias could occur in several temporal stages distinguished by attention, evaluation and reaction readiness periods.; There is considerable evidence that people are especially sensitive to emotionally negative materials. However, the temporal course of the negativity bias is still unclear. To address this issue, we observed the changes of P2, late positive components (LPC) and lateralized readiness potential (LRP) under positive, negative and neutral conditions, with International Affective Picture System (IAPS) pictures as emotional stimuli. We found that the amplitude of P2 in the negative block was significantly larger than that in the positive block, indicating that the attentional negativity bias occurred very early in emotion perception. The LPC amplitude evoked by negative pictures was larger than that by positive and neutral pictures, suggesting that the negativity bias also occurred in a later evaluation stage of emotion processing. The response-locked LRP interval was shortest in the block of negative pictures, indicating that the negative contents elicited a reaction priming effect. Above all, this research showed that emotional negativity bias could occur in several temporal stages distinguished by attention, evaluation and reaction readiness periods. (C) 2005 Elsevier Ireland Ltd. All rights reserved.
关键词	temporal course emotion negativity bias event-related potentials
学科领域	认知神经科学
	2006-05-01
语种	英语
发表期刊	NEUROSCIENCE LETTERS
ISSN	0304-3940
卷号	398 期号:1-2 页码:91-96
期刊论文类型	Article
收录类别	SCI ; SSCI
WOS记录号	WOS:000236914500019
引用统计	被引频次：296[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.psych.ac.cn/handle/311026/5725
专题	中国科学院心理研究所回溯数据库(1956-2010)
通讯作者	Y. J. Luo
作者单位	1.Beijing Normal Univ, Natl Key Lab Cognit Neurosci & Learning, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Key Lab Mental Hlth, Inst Psychol, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Huang, YX,Luo, YJ,Y. J. Luo. Temporal course of emotional negativity bias: An ERP study[J]. NEUROSCIENCE LETTERS,2006,398(1-2):91-96.
APA	Huang, YX,Luo, YJ,&Y. J. Luo.(2006).Temporal course of emotional negativity bias: An ERP study.NEUROSCIENCE LETTERS,398(1-2),91-96.
MLA	Huang, YX,et al."Temporal course of emotional negativity bias: An ERP study".NEUROSCIENCE LETTERS 398.1-2(2006):91-96.

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