What is "biofeedback"?

What is "biofeedback"?

Marc Darrow (Physical Medicine and Rehabilitation, Joint Rehabilitation Sports Medical Center, Inc. ) gives expert video advice on: What is "biofeedback"?; How does biofeedback work?

Biofeedback therapy is very good to help relax the body and the mind. The way biofeedback works is by using electrodes in certain parts of the body. As an example, to show me that I am not relaxed, I may place electrodes on my face. Then I may listen to a certain noise coming from the electrode into the machine to let me know that there's contraction taking place in the muscles of my face, even though I'm not aware of it. This could also be done on the back, if someone has low back pain.