Title :
Phase resetting and evoked activity contribute to the genesis of P300 signal in BCI system
Author :
Wan, Baikun ; An, Xingwei ; Ming, Dong ; Qi, Hongzhi ; Hu, Yong ; Luk, Kdk
Author_Institution :
Dept. of Biomed. Eng., Tianjin Univ., Tianjin
Abstract :
Brain-computer interface (BCI) is a new human machine interface. Currently, there is a debate about the genesis of the event-related potentials (ERPs). A constituent of the ERPs, the P300, appears to be closely associated with the cognitive processes of the brain. So this research focuses on the genesis of the P300. The event-related spectral perturbation (ERSP) and the inter-trial coherence (ITC) are used in the time-frequency analysis of the signals. The results shows that at the mean values of ERSP and ITC with a P300 signals are much larger than those without a P300 signals, from which we make a conclusion that two models about ERPs both contribute to the genesis of the P300.
Keywords :
bioelectric potentials; brain-computer interfaces; cognition; human computer interaction; neurophysiology; spectral analysis; time-frequency analysis; BCI system; P300 signal; brain-computer interface; cognitive processes; event-related potentials; event-related spectral perturbation; evoked activity; human machine interface; inter-trial coherence; phase resetting; time-frequency analysis; Biomedical measurements; Brain computer interfaces; Brain modeling; Coherence; Computational intelligence; Electroencephalography; Enterprise resource planning; Humans; Predictive models; Time frequency analysis; Brain-computer interface( BCI); Inter-trial coherence (ITC); event-related spectral perturbation (ERSP); evoked response potentials (ERP); phase reset;
Conference_Titel :
Computational Intelligence for Measurement Systems and Applications, 2009. CIMSA '09. IEEE International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-3819-8
Electronic_ISBN :
978-1-4244-3820-4
DOI :
10.1109/CIMSA.2009.5069919
