Final answer:
Biofeedback is a medical technique developed to help patients gain voluntary control over involuntary bodily processes to treat conditions such as anxiety attacks, using feedback from electronic equipment.
Step-by-step explanation:
The procedure of biofeedback for managing anxiety attacks involves recording a patient's neuromuscular and autonomic activity, and then providing this information back to the patient in the form of visual or auditory signals. The goal is to enable the individual to develop strategies to voluntarily control normally involuntary bodily processes. Developed by Gary Schwartz at Harvard University, biofeedback has been utilized to successfully treat a variety of conditions such as tension headaches, high blood pressure, asthma, and phobias.