North Texas Neuroscience Center PA Physicians are Specialists in the treatment of Multiple Sclerosis, Muscular Disorders, Epilepsy and Seizures, Sleep Disorders, Dementia, Alzheimer and Severe Migraine Headaches. Members. All of our physicians are members of the Texas Medical Association. Dr. Thomas Salmon is Board Certified in Neurology and specializes in Electro diagnostics. He is also a member of the American Academy of Neurology.Dr. Deborah Cantrell is also Board Certified in Neurology and is a member of the American Board of Psychiatry and Neurology, American Epilepsy Society and international speaker.Dr. Sunil Mathews is Board Certified in Clinical Neurophysiology and in Sleep Medicine.