The visual below demonstrates how human physiology (as measured by Heart Rate Variability (HRV)) changes before, during and after a sound healing session with singing bowls. Heart rate (shown by the red dotted line) begins to decrease when the singing bowl session starts and continues to decrease, remaining low (76) even after the session ends. Heart Rate Variability (SDNN-see description below) increases during the sound session and remains very high even after the session has been completed. At the end of the sound session, HRV remains high, heart rate declines, and the parasympathetic nervous system remains more activated (a clear indication of deep relaxation that usually leads to restoration of balance in various systems of the body).
SDNN is one of several HRV measures, and each reflects something different about autonomic regulation. Our guide to heart rate variability explains what SDNN, RMSSD, pNN50 and the Stress Index each capture, and why the LF/HF ratio should be treated with caution.
Why is this condition necessary for healing? What process facilitates such deep relaxation? How to measure this? What’s the significance of high HRV? – You can learn this during Naad Yoga workshops.
Gunjan Y Trivedi
Legend: SDNN (Standard Deviation of NN Interval) shows the standard deviation of beat-to-beat variations in the heart rate (a higher number indicates more variability), HF Power nu (High Frequency Power, normalised unit) indicates the extent of parasympathetic activation, and HR shows “heart rate”.
PS: This measurement was conducted during a one-to-one session, and the client agreed to connect to the HRV device (Emwave Pro). Data was analyzed using Kubios HRV Premium software.
