EEG coherence changes during relaxation correlate with the LF/HF ratio, reflecting autonomic nervous system balance.
Hypothesis-generating for EEG-autonomic links during relaxation; prospective studies needed before clinical use.
EEG parameters were analyzed in a wide frequency range for the estimation of the possible functional importance of different EEG components in the formation of relaxation. Sixty-five subjects aged 17–20 years were involved in the investigation. The relaxation session with monopolar EEG recording and autonomic parameters recording was carried out for each subject. During the relaxation significant changes were observed in all analyzed EEG ranges. Two types of changes of EEG coherence in the wakefulness-relaxation shift of state were distinguished, and correlation of the type of dynamics with the LF/HF ratio, showing the balance of sympathetic and parasympathetic parts of the autonomic nervous system, was found.
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Горев et al. (2014) studied this question.
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