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Reduced P3 amplitudes by negative facial emotional photographs in schizophrenia

Authors
 Soo Jung Lee  ;  Suk Kyoon An  ;  Kee Namkoong  ;  Kyu-sik Roh  ;  Eun Lee  ;  Chang-il Lee  ;  Pil Goo Lee  ;  Hyun Sang Cho  ;  Choong Heon Lee 
Citation
 SCHIZOPHRENIA RESEARCH, Vol.64(2-3) : 125-135, 2003 
Journal Title
 SCHIZOPHRENIA RESEARCH 
ISSN
 0920-9964 
Issue Date
2003
MeSH
Adult ; Arousal/physiology ; Attention/physiology ; Cerebral Cortex/physiopathology ; Discrimination Learning/physiology ; Electroencephalography ; Emotions/physiology* ; Facial Expression* ; Female ; Humans ; Male ; Pattern Recognition, Visual/physiology* ; Reaction Time/physiology ; Reference Values ; Schizophrenia/diagnosis ; Schizophrenia/physiopathology* ; Schizophrenic Psychology*
Keywords
Emotion ; Schizophrenia ; ERP
Abstract
Event-related potentials (ERPs), mostly P3, were measured in 20 schizophrenia and 20 healthy control subjects, in order to determine whether patients with schizophrenia have greater impairment in the processing of negative emotions. Study subjects were instructed to feel and respond to rare targets of facial photographs placed between frequent nontarget checkerboards. We found that P3 amplitudes associated with negative emotional photographs, in normal controls, were significantly larger than those of positive stimuli. Unlike the controls, in patients with schizophrenia, P3 amplitudes generated by negative emotional targets were significantly smaller than those of positive stimuli. We conclude that schizophrenia patients might be neurophysiologically different from healthy controls in terms of the manner in which they process facial emotion. Our findings are in line with previous neurobehavioral studies, in which patients with schizophrenia showed greater impairment in the recognition of negative emotions.
Full Text
http://www.sciencedirect.com/science/article/pii/S092099640200347X
DOI
10.1016/S0920-9964(02)00347-X
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Psychiatry (정신과학교실) > 1. Journal Papers
Yonsei Authors
Namkoong, Kee(남궁기) ORCID logo https://orcid.org/0000-0003-1400-8057
An, Suk Kyoon(안석균) ORCID logo https://orcid.org/0000-0003-4576-6184
Lee, Eun(이은) ORCID logo https://orcid.org/0000-0002-7462-0144
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/114562
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