Biofeedback is a technique that provides valuable information about our bodies. This self-regulation method helps people learn how to control what would otherwise be considered involuntary physical processes such as blood pressure or pain perception. It can also be used to regulate anxiety, attention-deficit disorder, and other undesirable mental states.

Using specialized equipment that converts physiological signals into visual or auditory cues, the user is able to monitor automatic body functions that are normally not consciously felt.

Take heart rate, for instance. Using the auditory or visual information that biofeedback provides, the user can mentally regulate his or her heart rate, and then actually see or listen to it slowing.

This method has also taught people to control their blood pressure, breathing, migraines, and many other physical functions and conditions.

In everyday life, we often use milder forms of biofeedback to alter our responses. For example, when we look into a mirror, we receive information about our appearance. Based on that, we can correct our posture or change our facial expression in a way that improves our appearance and well-being.

But biofeedback equipment allows people to get much more in-depth information — almost like peering inside their bodies. And trained biofeedback practitioners help guide individuals on how to regulate their body’s functions. Over time, the user learns to voluntarily self-regulate these physiological variables, without requiring feedback from the equipment.

Biofeedback sensors plug into a computer, allowing the user to view graphics or hear auditory prompts that provide information ranging from pace of breathing to positive thoughts.

A headband sensor can be used to monitor brain activity during meditation, and sounds fed back from the computer inform the user about relaxation levels.