Spatio-temporal distribution of chromatic VEPs.
- Author:
Dan LIU
1
;
Yingjie LI
;
Yisheng ZHU
;
Lun ZHAO
Author Information
1. School of Communication and Information Engineering, Biomedical Engineering Institute, Shanghai University, Shanghai 200072, China.
- Publication Type:Journal Article
- MeSH:
Adult;
Cerebral Cortex;
physiology;
Color;
Color Perception;
physiology;
Electroencephalography;
Evoked Potentials, Visual;
physiology;
Female;
Humans;
Male;
Signal Processing, Computer-Assisted;
Young Adult
- From:
Journal of Biomedical Engineering
2009;26(2):253-257
- CountryChina
- Language:Chinese
-
Abstract:
The VEPs evoked by different colors are differently distributed on human cerebral cortex. This study sought to shed light on the spatio-temporal distribution of chromatic VEPs and compare the distribution characteristics of chromatic VEPs evoked by different colors in different cerebral cortex regions. The subjects were asked to stare at the red, green, black gradient bars against a white background. The results show that the latency periods and the amplitudes of P1 and N1 peaks from different chromatic VEPs exhibit significant differences (P<0.001). The speed and intensity of cognitive task of red are higher than those of green. The latency periods and the amplitudes of P1 and N1 peaks from different cerebral cortex regions also display remarkable differences (P<0.001). The intensity of reaction in the temporal and occipital regions is stronger than that in other regions, and the latency periods in frontal area and central area are shorter than those in temporal and occipital regions.
