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EEG Signals Variation Under Stroboscope and Binaural Sound Stimulations

Abstract:

Electrical activity on the temporal and occipital lobes (alpha waves) is associated with physical and mental rest (8–12 Hz). In this study, alpha waves were stimulated by two methods: the first one involved the generation and implementation of a binaural sound, and the second method was a frequency-controlled strobe light. The electrical changes caused by arousal were recorded by the EPOC Emotiv headset and the OpenViBe software. An audiovisual device was built, in order to isolate the person from external disturbances, to obtain a higher concentration in the light that flashes from a screen and in the binaural stimulation applied through headphones. The results obtained in this study showed a change in the measurements on the temporal and occipital lobes. It increased from 0.44 ± 0.13 to 0.55 ± 0.15 in alpha waves, and beta waves showed a decrement from 0.61 ± 0.11 to 0.436 ± 0.19. This study presents the analysis of the electrical brain's variation of a person under audiovisual stimulation.