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Synchronization in the brain EEG-activity in modified Multiple Sleep Latency Test

E. Martirosyan1, O. Posnenkova1, R. Parsamyan1, M. Zhuravlev2,1,,
1Saratov State Medical University
2Saratov State University


A numerical method based on wavelet bicoherence is proposed, aimed at analyzing the spatial development of the dynamics of the relationship between different regions of the cerebral cortex. A feature of the proposed technique from the classical, for example, from [Makarov V., et al. "Betweenness centrality in multiplex brain network during mental task evaluation."Physical Review E 98.6 (2018): 062413], is an adaptation to the statistical assessment of temporal dynamics, which makes it possible to consider the temporal evolution of the interaction of different zones. We describe the possibility of considering both recurring events and the allocation of time intervals of similar behavior during the experiment.
We apply the proposed method to study human EEG recording in modified Multiple Sleep Latency Test. A change in synchronization between different brain regions at the beginning and end of the experiment is demonstrated with an sleepiness feeling and an increase in pauses when sound stimuli were marked in test subjects.

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Elena Martirosyan
Saratov State Medical University


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