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This study examined evoked response potentials (ERPs) to angry and neutral faces in15 individuals with post-traumatic stress disorder (PTSD) and 15 age and sex-matched controls over temporal (T5,T6) and occipital (O1,O2) regions.Twenty faces with an angry expressionwere alternatedwith 20 faceswith a neutral emotional expression. There were significantly larger early negative (N110) and late negative (N650) ERP components in controls to the angry compared to the neutral faces.The PTSDgroup did notdisplay ERP differences between angry and neutral faces, and the amplitude of their negativewaveformswere reduced relative to controls.These ndingsmay refect adaptive, rapid responding to potential threat in the controls, and a reduced capacity to discriminate between non-threat and generalized threat stimuli in PTSD. NeuroReport 14:777-780 copyright 2003 LippincottWilliams &Wilkins.

Item Type:	Refereed Article
Keywords:	ERP; Faces; PTSD;Threat
Research Division:	Psychology
Research Group:	Clinical and health psychology
Research Field:	Health psychology
Objective Division:	Health
Objective Group:	Clinical health
Objective Field:	Clinical health not elsewhere classified
UTAS Author:	Felmingham, KL (Professor Kim Felmingham)
ID Code:	72149
Year Published:	2003
Web of Science® Times Cited:	77
Deposited By:	Psychology
Deposited On:	2011-08-23
Last Modified:	2022-08-24
Downloads:	15 View Download Statistics