Neurocognitive mechanisms underlying identification of environmental   risks

doi:10.1016/j.neuropsychologia.2008.09.010

CORC > 北京大学 > 心理与认知科学学院

	Neurocognitive mechanisms underlying identification of environmental risks
	Qin, Jungang ; Han, Shihui
刊名	neuropsychologia
	2009
关键词	Environmental risk ERP fMRI Cingulate cortex Personal risk EVENT-RELATED POTENTIALS CINGULATE CORTEX ACTIVATION HUMAN BRAIN FUNCTIONAL NEUROANATOMY EMOTIONAL WORDS FMRI SELF PERCEPTION ATTENTION DECISION
DOI	10.1016/j.neuropsychologia.2008.09.010
英文摘要	Environmental risks threaten a large population and are more dreadful than personal risks that bring physical or health problems to individuals. To assess the neurocognitive processes involved in environmental risk identification, we recorded brain activities, using event-related potential (ERP) and functional magnetic resonance imaging (fMRI), from human adults while they identified risky and safe environmental and personal events depicted in words. We found that, relative to safe environmental events, the identification of risky environmental events induced larger amplitudes of an early positive ERP component at 180-260 ms over the frontal area (P200) and of a late positive wave at 420-660 ms over the central-parietal area (LPP). fMRI results showed that the identification of environmental risks was associated with increased activations in the ventral anterior cingulate cortex (vACC) and posterior cingulate cortex (PCC). The amplitudes of the LPP/P200 and the PCC activity positively correlated with subjective ratings of risk degree of and emotional responses to the risky environmental events. However, the identification of personal risks induced positive shift of ERPs at 280-320 ms over the frontal and parietal areas and increased activity in the left inferior and medial prefrontal cortex. Our findings suggest that identification of dreadful environmental risks is subserved by an early detection in vACC and a late retrieval of emotional experiences in PCC. (C) 2008 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000263815300012&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Behavioral Sciences; Neurosciences; Psychology, Experimental; SCI(E); PubMed; SSCI; 24; ARTICLE; 2; 397-405; 47
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/162872]
专题	心理与认知科学学院
推荐引用方式 GB/T 7714	Qin, Jungang,Han, Shihui. Neurocognitive mechanisms underlying identification of environmental risks[J]. neuropsychologia,2009.
APA	Qin, Jungang,&Han, Shihui.(2009).Neurocognitive mechanisms underlying identification of environmental risks.neuropsychologia.
MLA	Qin, Jungang,et al."Neurocognitive mechanisms underlying identification of environmental risks".neuropsychologia (2009).