Bi-modal enhancement effect from combination of visual and auditory stimulus
10.3760/cma.j.issn.1673-4181.2012.04.006
- VernacularTitle:视、听感觉刺激双模增进作用研究
- Author:
Wuyi WANG
;
Xiaobo XIE
;
Hongyan CUI
;
Li HU
;
Xingwei AN
;
Hongzhi QI
;
Dong MING
;
Baikun WAN
;
Shengpu XU
;
Yong HU
- Publication Type:Journal Article
- Keywords:
Behavioral;
Event-related potentials;
Vision;
Audition;
Bi-modal enhancement
- From:
International Journal of Biomedical Engineering
2012;35(4):213-216,219,后插3
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the cognitive difference between uni-modal (V,A) and bi-modal (VA)target stimuli from both vision and audition,and then to study the neural mechanisms of bi-modal enhancement.Methods This experiment adopted a speeded target stimuli detection task, both behavioral and electroencephalographic responses to uni-modal and bi-modal target stimuli which were combined from visual and auditory target stimuli,were recorded from 14 normal subjects using a 64-channel EEG NeuroScan system.The differences of cognitive between uni-modal and bi-modal stimulus were tested from both behavioral (reaction time (RT) and error rate (ER)) and event-related potentials (ERPs) (P2 latency and amplitude,P3 latency and amplitude)data,and the correlation between behavioral and ERPs results were analyzed.Results As a result,the RT,ER and P3 latency has significant difference between uni-modal and bi-modal target stimuli.In addition,there were significant correlation between behavioral data and P3 latency,especially from the RT and P3 latency.Conclusion By comparing the difference between uni-modal and bi-modal from both behavioral and ERPs results,we could reached the conclusion that the neural mechanism of bi-modal target detection was predominant over that of vision and audition uni-modal target detection,the enhancement take place not only involved in early ERP components (such as P1 and N1),but engaged at the late ERP components (such as P2 and P3).
