He specializes in neurologic disorders involving disturbances of muscular movement and the neuromodulative treatment of pain, that is, the use of electrical impulses for therapeutic benefit. He and his cardiologist father have been involved in research on Earthing for more than two decades. Dr. Sokal is a member of the executive committee of the European Society for Stereotactic and Functional Neurosurgery and the International Neuromodulation Society.