[Synchronization of the activity of gamma oscillation and ERP components].
In the present study the activity of the gamma oscillation synchronized with the stimuli and ERP is investigated by means of unimodal and bimodal experiments. The multiresolution wavelet algorithm is used for signal extraction and Gabor transform is employed to represent the temporal evolution of the selected frequency components. The results show that the gamma oscillation is strongly phase-locked not only with the exogenous stimuli in the three experiments, but also with the endogenous components of ERPs (N2b, P300). And the ERP and the gamma oscillation induced by the bimodal stimuli show the audio-visual bisensory integration and relationship. In addition, the results from the experiments with the auditory stimuli show that the gamma oscillation may be closely related to the perception of auditory signals.
Wang
Mingshi
M
Department of Biomedical Engineering and Scientific Instruments, College of Precision Instruments and Optoelectronic Engineering, Tianjin University, Tianjin 300072, China. mingshiw@public.tpt.tj.cn
Liu
Jin
J
Zhu
Qiang
Q
Chen
Yun
Y
D000328:Adult; D000465:Algorithms; D004569:Electroencephalography / Q000379:methods*; D018913:Event-Related Potentials, P300 / Q000502:physiology*; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D005074:Evoked Potentials, Visual / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D012815:Signal Processing, Computer-Assisted