Biofeedback therapy uses data collected from physiological sensors to teach patients to control and eliminate unwanted conditions. Healthcare providers have used this technology successfully to treat chronic headaches, digestive disorders, hypertension, cardiac arrhythmias, epilepsy, sleep disorders, PMS, and anxiety disorders. By one estimate, there are approximately 4,000 biofeedback practitioners in the United States. The most prevalent use of biofeedback is neurofeedback, in which patients learn to consciously control their brainwaves. Over 700 professional organizations worldwide have used neurofeedback to treat Attention Deficit Disorder. Future versions of the Sensatex System may be able to provide a simple platform for biofeedback systems, making biofeedback therapy a less costly and more accessible healthcare option.