Perceptual bias of patients with schizophrenia in morphed facial expression

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	Perceptual bias of patients with schizophrenia in morphed facial expression
	Huang, Jia1,2 ; Chan, Raymond C. K.1,2 ; Gollan, Jackie K.4; Liu, Wenhua 3,5; Ma, Zheng 6; Li, Zhanjiang 6; Gong, Qi-yong 7; Chan, RCK (reprint author), Chinese Acad Sci, Inst Psychol, Neuropsychol & Appl Cognit Neurosci Lab, 4A Datun Rd, Beijing 100101, Peoples R China.
刊名	PSYCHIATRY RESEARCH
	2011-01-30
卷号	185 期号:1-2 页码:60-65
关键词	Emotion perception Schizophrenia Morphed facial expression
ISSN号	0165-1781
产权排序	1,2
文献子类	Article
英文摘要	Limited research has specifically examined the nature of the dysfunction in emotion categorization representation in schizophrenia. The current study aimed to investigate the perception bias of morphed facial expression in subjects with schizophrenia and healthy controls in the emotion continua. Twenty-eight patients with schizophrenia and thirty-one healthy controls took part in this study. They were administered a standardized set of morphed photographs of facial expressions with varying emotional intensities between 0% and 100% of the emotion, in 10% increments to provide a range of intensities from pleasant to unpleasant and approach to withdraw. Shift points, indicating the time point that the subjects' emotion identification begins to change, and response slopes, indicating how rapidly these changes have happened at the shift points in the emotion continuum, were measured. Patients exhibited a significantly greater response slope (i.e., patients' perception changed more rapidly) and greater shift point (i.e., patients still perceived mild expressions of anger as happy faces) with increasing emotion signal compared with healthy controls when the facial expression morphed from happy to angry. Furthermore, patients with schizophrenia still perceived mild expressions of fear as angry faces(a greater shift point) and were less discriminative from angry to fearful emotion(a flatter response slope). They were sensitive to sadness (a smaller shift point) and the perception changed rapidly (a sharper response slope) as compared with healthy controls in the emotion continuum of happy to sad. In conclusion, patients with schizophrenia demonstrated impaired categorical perception of facial expressions, with generally 'rapid' but 'late' discrimination towards social threat-related stimuli such as angry facial expression. Compared with healthy controls, these patients have a sharper discrimination perception pattern in the emotion continua from positive valence to negative valence. (C) 2010 Elsevier Ireland Ltd. All rights reserved.
学科主题	Abnormal Psychology
URL标识	查看原文
资助项目	一室陈楚侨课题组
语种	英语
WOS记录号	WOS:000287113000011
资助机构	Sun Yat-Sen University [16000-3253182] ; Institute of Psychology [O7CX031003] ; Chinese Academy of Sciences [KSCX2-YW-R-131] ; National Science Foundation of China [30770723] ; National Basic Research Programme [2007CB512302/5]
公开日期	2011-12-02
内容类型	期刊论文
源URL	[http://ir.psych.ac.cn/handle/311026/7284]
专题	心理研究所_脑与认知科学国家重点实验室
通讯作者	Chan, RCK (reprint author), Chinese Acad Sci, Inst Psychol, Neuropsychol & Appl Cognit Neurosci Lab, 4A Datun Rd, Beijing 100101, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Psychol, Neuropsychol & Appl Cognit Neurosci Lab, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing 100101, Peoples R China 3.Sun Yat Sen Univ, Fac Life Sci, Guangzhou 510275, Guangdong, Peoples R China 4.Northwestern Univ, Dept Psychiat & Behav Sci, Chicago, IL 60611 USA 5.Guangzhou Med Coll, Fac Human & Social Sci, Guangzhou, Guangdong, Peoples R China 6.Capital Med Univ, Beijing Anding Hosp, Beijing, Peoples R China 7.Sichuan Univ, W China Sch Med, W China Hosp, Huaxi MR Res Ctr,Dept Radiol, Chengdu 610064, Peoples R China
推荐引用方式 GB/T 7714	Huang, Jia,Chan, Raymond C. K.,Gollan, Jackie K.,et al. Perceptual bias of patients with schizophrenia in morphed facial expression[J]. PSYCHIATRY RESEARCH,2011,185(1-2):60-65.
APA	Huang, Jia.,Chan, Raymond C. K..,Gollan, Jackie K..,Liu, Wenhua.,Ma, Zheng.,...&Chan, RCK .(2011).Perceptual bias of patients with schizophrenia in morphed facial expression.PSYCHIATRY RESEARCH,185(1-2),60-65.
MLA	Huang, Jia,et al."Perceptual bias of patients with schizophrenia in morphed facial expression".PSYCHIATRY RESEARCH 185.1-2(2011):60-65.