The Impact of the Brain Wave Modulation Technique (BMW-T) on Heart Rate Variability: A Single Session for Short-Term Stress Reduction

Background: Recent advances in psychophysiology have underscored the importance of autonomic nervous system modulation in managing short-term stress. While several interventions have demonstrated efficacy in reducing short-term stress and anxiety symptoms, there remains a gap in understanding how different short-term techniques compare in terms of both psychological and physiological outcomes. This study investigated the effects of a single session of the Brain Wave Modulation Technique (BWM-T) compared with a psychoeducational session on short-term stress management. Methods: A total of 72 university students participated in this study (mean age = 27.5 years, 79% female). They were randomly assigned to either an experimental group (n = 36) receiving BWM-T or a control group (n = 36) receiving a standard psychoeducational short-term stress management session. Pre- and post-intervention measures included HRV parameters, perceived stress (using the Distress Thermometer, DT), and anxiety (using the STAI-Y State Anxiety Scale, S-ANX). Results: Both groups experienced significant reductions in perceived stress (DT: MD = 1.42, p < 0.001) and anxiety (S-ANX: MD = 6.93, p < 0.001). However, only the experimental group demonstrated physiological changes indicative of improved autonomic function: decreased low-frequency (LF) power (MD = −0.369, p < 0.05) and a lower LF/HF ratio (MD = −1.09, p < 0.05). These findings highlight the unique physiological benefits of BWM-T, beyond the general psychological improvements seen in both interventions. Conclusions: BWM-T appears to be a promising, effective short-term intervention for reducing short-term stress and enhancing autonomic regulation. Further studies are needed to evaluate its long-term effects and potential for broader implementation.