LIGHT ACTIVATION AND SUPPRESSION OF BRAIN CORTEX ACTIVITY IN HUMANS

EEG rhythm driving was studied in the dark, under action of constant i llumination and after its switching off. The intensity of the backgrou nd illumination influenced frequency-dependent brain reactivity change s. The results testify to the existence of the range of the optimal fo r brain activity illumination between the moderate (activating) and ex tra-high (suppressing) background light intensities. A conclusion is d rawn on the possibility of application of electrophysiological techniq ues for revealing the optimal illumination conditions.