Event-related potential of facial expression processing
10.3321/j.issn:1673-4254.2005.08.001
- VernacularTitle:面孔表情加工的事件相关电位研究及应用
- Author:
Hong-Zhen ZHOU
1
;
Ya-Jie LI
;
Shu ZHOU
;
Xue-Song LU
;
Yi-Feng LUO
;
Neng-Tao ZHENG
;
Ling LIU
;
Xiao-Yan WANG
Author Information
1. Nanfang Hospital, Southern Medical University
- Keywords:
event-related potentials;
face recognition;
emotion;
spatiotemporal analysis
- From:
Journal of Southern Medical University
2005;25(8):921-924,941
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate spatial and temporal patterns of event-related potentials (ERP) evoked by facial expression.Methods ERP was recorded in 25 healthy subjects while they performed facial recognition task. Repeated-measure one-way ANOVA was adopted to compare the subjects' responses to stimulation by 3 different expressions (positive, neutral and negative) with statistical parametric mapping (SPM). Results Significant facial expression effects occurred separately in the left parietal and bilateral occipital regions (280-340 ms), left frontal region (400-420 ms), and right prefrontal region (480-500 ms).In 4 time periods, significant difference was observed between positive and neutral emotion wave in the right frontoparietotemporal and left prefrontal regions (60-80 ms), right occipital region (120-140 ms), left occipital region (280-320 ms), and left frontoparietal region (400-440 ms). Significant difference between negative and neutral emotion waves was observed in 5 time periods in the right occipital region (120-140 ms), central frontoparietal region (220-240 ms), central parietal region (280-300 ms),left parietal and right temporopartial regions (320-340 ms) and frontopartial occipitotemporal region (480-500 ms).Conclusions The spatiotemporal patterns of ERP suggest that the information processing of facial expression involves extensive brain regions dynamically.
