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Yakovenko I.A.

Institute of Higher Nervous Activity and Neurophysiology

Petrenko N.E.

Institute of Higher Nervous Activity and Neurophysiology

Cheremushkin E.A.

Institute of Higher Nervous Activity and Neurophysiology

Tkachenko O.N.

Institute of Higher Nervous Activity and Neurophysiology

Dorokhov V.B.

Institute of Higher Nervous Activity and Neurophysiology

Interhemispheric asymmetry of EEG rhythm connections during spontaneous awakenings after short sleep episodes during a monotonous psychomotor test

Authors:

Yakovenko I.A., Petrenko N.E., Cheremushkin E.A., Tkachenko O.N., Dorokhov V.B.

More about the authors

Journal: S.S. Korsakov Journal of Neurology and Psychiatry. 2022;122(5‑2): 18‑22

DOI: 10.17116/jnevro202212205218

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To cite this article:

Yakovenko IA, Petrenko NE, Cheremushkin EA, Tkachenko ON, Dorokhov VB. Interhemispheric asymmetry of EEG rhythm connections during spontaneous awakenings after short sleep episodes during a monotonous psychomotor test. S.S. Korsakov Journal of Neurology and Psychiatry. 2022;122(5‑2):18‑22. (In Russ.)
https://doi.org/10.17116/jnevro202212205218

 
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OBJECTIVE

To study interhemispheric asymmetry (IHA) according to electroencephalography (EEG) data of a healthy person during cognitive awakening from the second stage of daytime sleep before restoring the performance of the psychomotor test.

MATERIAL AND METHODS

In 23 healthy adult subjects, we studied IHA in the amplitude-amplitude interaction of EEG rhythms for 20 sec segments before spontaneous awakening determined by the moment the alpha-rhythm appearance on the EEG and the subsequent onset of psychomotor activity. The state of the subject during this period (in the initial stage of the so-called cognitive awakening preceding the behavioral awakening), when the person is unable to move, but is able to perceive external stimuli, is an experimental model for highlighting signs of conscious activity of patients when coming out of a coma. Wavelet transform was used to calculate the rhythmic characteristics of bioelectrical activity. The Kendall correlation coefficient served as a measure of rhythm interaction.

RESULTS

IHA in the interaction of EEG rhythms is dynamic nature and formed by theta rhythm connections with alpha2- and beta-rhythms in the left brain hemisphere and delta-type connections in the right.

CONCLUSION

Possibly, the greater activation of the left hemisphere is related to the retrieval of an instruction from memory, which subsequently allows to return to the activity interrupted by sleep.

Keywords:

psychomotor test
short-term sleep
spontaneous awakening
interhemispheric asymmetry
interaction of EEG rhythms

Authors:

Yakovenko I.A.

Institute of Higher Nervous Activity and Neurophysiology

Petrenko N.E.

Institute of Higher Nervous Activity and Neurophysiology

Cheremushkin E.A.

Institute of Higher Nervous Activity and Neurophysiology

Tkachenko O.N.

Institute of Higher Nervous Activity and Neurophysiology

Dorokhov V.B.

Institute of Higher Nervous Activity and Neurophysiology

Received:

18.03.2022

Accepted:

07.04.2022

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