EEG-reaktsii v dinamike kardiobioupravleniya u podrostkov s razlichnym vegetativnym tonusom, prozhivayushchikh na severnykh shirotakh

Abstract

The character of the electroencephalogram (EEG) changes during a once procedure of heart rate variability biofeedback was considered in adolescents 14-17 years with different autonomic nervous types living in the different geographical latitudes and climatic, ecological conditions of the European North: the Subpolar (64°30' N) and Polar (67°40' N) areas. More intensive reduction of theta EEG activity (p < 0,05-0,001) with a predominance of the dynamics in the right brain hemisphere (p < 0,05), which continues to decline after the procedure occurs in adolescents of Polar region, especially in the group with a predominance of sympathetic influences on the heart activity. A common increasing of EEG alpha activity over all areas of the cerebral cortex (p < 0,05-0,001) with some displacement gradient in the front and center brain parts revealed in adolescents from all groups. A spectral power increment of beta1 EEG activity occur primarily at the expense of the front and right center-temporal brain parts (p < 0,05-0,001) in adolescents of both areas, but the biggest changes were found in persons with a balanced (normal) autonomic nervous tone (p < 0,05).

Neurophysiologic Reactions during Heart Rate Variability Biofeedback Session in Adolescents with Different Risk of Internet Addiction

“…Mechanisms of EEG beta oscillations can be determined by the properties of neurons in both the cortex and the thalamus, as well as intracortical and thalamocortical interactions; in addition, there are data on the generation of a beta 1 rhythm in the 15–20 Hz band in the CA1 region of the hippocampus [ 32 ]. Previously, we observed the absence of significant reactivity of high-frequency EEG in response to the HRV BF procedure in adolescents with symptoms of sympathicotonia [ 33 ]. In the presented study, among individuals with a stable pattern of IA (Group III), there were more participants with sympathicotonia in terms of SI, which could also be associated with the low reactivity of brain structures in the high-frequency EEG range.…”