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Journal Article

Processing and model design of the gamma oscillation activity based on FitzHugh-Nagumo model and its interaction with slow rhythms in the brain

Sevasteeva E. S., Plotnikov S. A., Lynnyk Volodymyr

: Cybernetics and Physics vol.10, 4 (2021), p. 265-272

: Gamma rhythm, Correlation, Oscillation, Electrocorticogram, FitzHugh-Nagumo model

: 10.35470/2226-4116-2021-10-4-265-272

: http://lib.physcon.ru/doc?id=46eb05d969a0

(eng): The brain is in a state of processing information 24 hours a day. There are millions of processes proceeding in it accompanied by various spectra of rhythms. This paper tests the hypothesis that the slow delta rhythm excites the gamma rhythm oscillations. Unlike other papers, we determine the slow rhythm spectrum not at the hypothesis stage but during the experiment. We design algorithms of filtration, envelope extraction, and correlation coefficient calculation for signal processing. Moreover, we examine the data on all electroencephalogram channels, which allows us to make a more reasonable conclusion. We confirm that a slow delta rhythm excites a fast gamma rhythm with an amplitude-phase type of interaction and calculate a delay between these two signals equal to about half a second.

: BC

: 10102

2019-01-07 08:39