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Analysis of Endogenous Spectral Power of EEG Alpha-Range Biopotentials during Mnestic Activity under Conditions of Rhythmically Organized Optical Stimulation

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We studied the effect of optical stimulation (10 Hz) on the effectiveness of mnestic activity in the n-back task in healthy subjects (n=32). EEG was recorded at all stages of the examination. The absolute values of the spectral power of the 10 Hz frequency (μV2) of the alpha range were calculated. According to the results of the test without optical stimulation, the examinees were divided into groups with high (group 1) and low (group 2) task performance. In the initial state, the spectral power of 10 Hz was significantly higher in group 1 subjects. Under conditions of screen flickering, the results became poorer in group 1 and better in group 2 in comparison with the results under normal conditions. These changes were accompanied by an increase in the spectral power of 10 Hz only in group 2 subjects. These findings can provide the basis for the development of practical recommendations for improving the mnestic functions in patients with consideration for the individual characteristics of their initial EEG.

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Authors and Affiliations

  1. P. K. Anokhin Research Institute of Normal Physiology, Moscow, Russia

    I. I. Korobeinikova, N. A. Karatygin & S. S. Pertsov

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  1. I. I. Korobeinikova
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  2. N. A. Karatygin
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  3. S. S. Pertsov
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Correspondence to I. I. Korobeinikova.

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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 171, No. 6, pp. 676-680, June, 2021

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Korobeinikova, I.I., Karatygin, N.A. & Pertsov, S.S. Analysis of Endogenous Spectral Power of EEG Alpha-Range Biopotentials during Mnestic Activity under Conditions of Rhythmically Organized Optical Stimulation. Bull Exp Biol Med 171, 695–698 (2021). https://doi.org/10.1007/s10517-021-05297-y

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  • DOI: https://doi.org/10.1007/s10517-021-05297-y

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