We studied the effect of optical stimulation with a frequency of 10 Hz on the cognitive task effectiveness (the “n-back” test) and spatial characteristics based on the coefficients of coherence (Coh) of the general, high, and low ranges of the EEG alpha rhythm in healthy subjects (38 men aged 18-26 years). Based on the performance of the test presented in the optical stimulation absence, groups with high (group 1) and low (group 2) results have been identified. It was found that the optical stimulation led to a decrease in the test effectiveness in group 1 subjects and to an increase in group 2 persons. Optical stimulation increased interhemispheric integration of neural ensembles in a number of cortical areas at frequencies of a high subrange of the alpha rhythm. An increase in interhemispheric cooperation was more characteristic of subjects who increased the test activity effectiveness against the optical stimulation background. It is assumed that the growth of interhemispheric integration caused by rhythmically organized 10-Hz optical stimulation is a factor contributing to an increase in the effectiveness of performing cognitive tasks of this kind.
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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 173, No. 4, pp. 416-421, April, 2022
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Karatygin, N.A., Korobeinikova, I.I. & Pertsov, S.S. Influence of Rhythmically Organized Optical Stimulation on the Performance of Human Cognitive Activity and Spatial Characteristics of the EEG Alpha Range. Bull Exp Biol Med 173, 409–414 (2022). https://doi.org/10.1007/s10517-022-05558-4
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DOI: https://doi.org/10.1007/s10517-022-05558-4