Short-term effects of audio-visual stimulation on EEG
نویسندگان
چکیده
In order to identify direct and transient changes in human cortex under influence of the training with audio-visual stimulation (AVS) various EEG measures were estimated. In the course of 2 months, 25 repetitions of a 20 min AVS program with stimulation frequencies in the range 2-18 Hz were applied to 6 healthy volunteers. EEG data were recorded from 6 head locations during relaxed wakefulness prior, during and after AVS. Entrainment as a direct reaction to AVS was well developed in majority of cases, being strongest in backward regions and spreading also to other cortex locations. Transient effects displayed significant decreases in beta and gamma bands across head locations, and increase of theta-1 and alpha-1 coherence in central cortex regions.
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