Perhaps the engineers among you can use this info: At the Columbia-Presbyterian Medical Center (NYC), Dr. Seth Pullman, M.D., operates the "Clinical Motor Physiology Lab." There they study the objective measurement of movement disorders and analyze the physiology of the different forms of tremors. Two of the tests are: 1. EEG to EMG activity - recording the relationship between brain waves and involuntary movements, and 2. EMG profile - determining the focus of movement onset and muscle activity. Also, the basic mechanisms responsible for dystonia are being studied using stimulation of the central nervous system. Parkinson's Disease Foundation, C-P Med Cntr 640-650 West 168th Street, NY, NY 10032-9982 212-923-4700 800-457-6676 Stephan Schwartz