Mental Stress: Neurophysiology and Its Regulation by Sudarshan Kriya Yoga

Int J Yoga. 2017 May-Aug;10(2):67-72. doi: 10.4103/0973-6131.205508.


Aim: The present study focuses on analyzing the effects of Sudarshan Kriya yoga (SKY) on EEG as well as ECG signals for stress regulation. To envision the regulation of stress Determination Test (DT) has been used. We have chosen a control group for contriving a cogent comparison that could be corroborated using statistical tests.

Subjects and methods: A total of 20 subjects were taken in the study, of which 10 were allotted to a control group. Electroencephalograph was taken during a DT task, before and after SKY the sky session with 30 days of SKY session given to the experimental group. No SKY was given to the control group.

Results: We quantified mental stress using EEG, ECG and DT synergistically and used SKY to regulate it. We observed that alpha band power decreases in the frontal lobe of the brain with increasing mental stress while frontal brain asymmetry decreases with increasing stress tolerance.

Conclusions: These EEG, ECG and DT shows a significant decrement in mental stress and improvement in cognitive performance after SKY, indicating SKY as a good alternative of medication for stress management.

Keywords: Artificial neural network; Poincare plot; Sudarshan Kriya Yoga; cognition; determination test; electrocardiogram; electroencephalogram; frontal brain asymmetry; mental stress; reactive stress tolerance.