Time-varying source analysis of auditory-visual stimuli evoked event-related potentials
10.3760/cma.j.issn.1673-4181.2014.04.002
- VernacularTitle:视听联合刺激诱发事件相关电位的时变源分析
- Author:
Li FENG
;
Xiaobo XIE
;
Hongyan CUI
;
Shengpu XU
;
Yong HU
- Publication Type:Journal Article
- Keywords:
Dipole source analysis;
Cross-modality stimuli;
Event-related potentials;
Visual stimuli;
Auditory stimuli
- From:
International Journal of Biomedical Engineering
2014;37(4):197-200
- CountryChina
- Language:Chinese
-
Abstract:
Objective Dipole source analysis was employed to investigate the transient changes in brain mechanisms at earlier latencies.Methods Fourteen healthy volunteers were recruited in this research and evoked event-related potentials (ERPs) of unimodal and bimodal visual auditory stimuli were recorded by 64-electrodes electroencephalograph (EEG) recording system.All these earlier phases of the stimuli were divided into several subphases by specific time window for source analysis.Results The results showed that ERPs sources were mainly generated from visual and audio cortex,and there were changes in the location and strength of the dipole sources in each sub-phase.Conclusions The result of this study implies a serial processing of sensory information in human cortices in early phase of visual and auditory stimuli.
