HRV

Basic biofeedback in pain management


I’m no techno-whizz in biofeedback – you have to speak to one of my colleagues (she knows who she is!) to get the technical data on things like heart rate variability – but I do use several modalities reasonably often. So today I thought I’d discuss some of the ways I use biofeedback with the people I work with.

Biofeedback basically provides visual or auditory information about normally undetectable physiological processes. It ranges from temperature sensors through to skin conduction (galvanic skin response), and includes surface EMG, respiration, blood volume pulse and sometimes these are put together to provide feedback on heart rate variability. I’m not going into HRV yet, that’s for another day!

The most common sensors I use
everyday are GSR, which is a reasonably sensitive measure of general arousal level; respiration because it provides immediate feedback on the way the person is breathing and is helpful for developing diaphragmatic breathing; BVP because it responds quickly to respiration and can demonstrate to the person the effect of slowing their breathing down; and I often use surface EMG because it can provide immediate feedback on posture changes (more…)