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Impaired Working Memory Updating for Emotional Stimuli in Depressed Patients
Zhang, Dandan1,2; Xie, Hui2; He, Zhenhong2; Wei, Zhaoguo3; Gu, Ruolei1,4
第一作者Zhang, Dandan ; Xie, Hui
2018-04-04
发表期刊FRONTIERS IN BEHAVIORAL NEUROSCIENCE
通讯作者邮箱gurl@psych.ac.cn
ISSN1662-5153
文章类型Article
卷号12期号:0页码:65
Q分类Q2
产权排序1
摘要Although two previous studies have demonstrated that depressed individuals showed deficits in working memory (WM) updating of both negative and positive contents, the effects were confounded by shifting dysfunctions and the detailed neural mechanism associated with the failure in N-back task is not clear. Using a 2-back task, the current study examined the WM updating of positive, negative and neutral contents in depressed patients. It is found that depressed patients performed poorer than healthy controls only when updating positive material. Using event-related potential (ERP) technique, the current study also investigated the neural correlates of updating deficits in depression. According to previous studies, the n-back task was divided into three sub-processes, i.e., encoding, matching and maintaining. Our ERP results showed that depressed patients had smaller occipital P1 for positive material compared to healthy controls, indicating their insensitivity to positive items on early encoding stage. Besides, depressed patients had larger frontal P2 and parietal late positive potential (LPP) than healthy controls irrespective of the valence of the words, reflecting that patients are inefficient during matching (P2) and maintaining (LPP) processes. These two mechanisms (insufficient attention to positive stimuli and low efficiency in matching and maintaining) together lead to the deficits of WM updating in depression.
关键词depression working memory emotion updating N-back task
DOI10.3389/fnbeh.2018.00065
收录类别SCI ; SSCI
语种英语
项目资助者National Natural Science Foundation of China(31571120) ; National Key Basic Research Program of China (973 Program)(2014CB744600) ; Training Program for Excellent Young College Faculty in Guangdong(YQ2015143) ; Shenzhen Basic Research Project(JCYJ20170302143246158) ; Project for Young Faculty of Humanities and Social Sciences in Shenzhen University(17QNFC43)
WOS研究方向Behavioral Sciences ; Neurosciences & Neurology
WOS类目Behavioral Sciences ; Neurosciences
WOS记录号WOS:000429279500001
WOS标题词Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]EVENT-RELATED POTENTIALS ; N-BACK TASK ; CARD SORTING TEST ; MAJOR DEPRESSION ; SELECTIVE ATTENTION ; UNIPOLAR DEPRESSION ; COGNITIVE IMPAIRMENT ; CLINICAL DEPRESSION ; EXECUTIVE FUNCTIONS ; BRAIN POTENTIALS
引用统计
文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/25741
专题社会与工程心理学研究室
通讯作者Gu, Ruolei
作者单位1.Inst Psychol, CAS Key Lab Behav Sci, Beijing, Peoples R China
2.Shenzhen Univ, Shenzhen Key Lab Affect & Social Cognit Sci, Shenzhen, Peoples R China
3.Shenzhen Kangning Hosp, Dept Clin Psychol, Shenzhen, Peoples R China
4.Univ Chinese Acad Sci, Dept Psychol, Beijing, Peoples R China
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Zhang, Dandan,Xie, Hui,He, Zhenhong,et al. Impaired Working Memory Updating for Emotional Stimuli in Depressed Patients[J]. FRONTIERS IN BEHAVIORAL NEUROSCIENCE,2018,12(0):65.
APA Zhang, Dandan,Xie, Hui,He, Zhenhong,Wei, Zhaoguo,&Gu, Ruolei.(2018).Impaired Working Memory Updating for Emotional Stimuli in Depressed Patients.FRONTIERS IN BEHAVIORAL NEUROSCIENCE,12(0),65.
MLA Zhang, Dandan,et al."Impaired Working Memory Updating for Emotional Stimuli in Depressed Patients".FRONTIERS IN BEHAVIORAL NEUROSCIENCE 12.0(2018):65.
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