Analysis of the heart rate variability in negative functional states in the course of psychological relaxation sessions

The aim of this study was to compare the effects of psychological relaxation on the heart rate variability (HRV) in subjects with a number of negative functional states: asthenia, depression, and neurotic symptoms. The analysis performed allowed us to reveal the dynamics of theHRV variables characteristic of each negative functional state and to determine indicators, which are significant for their diagnosis. The effectiveness of usingHRV analysis for the control and management of the psychological relaxation process and the diagnosis of a number of negative functional states in humans is substantiated by the study results.