 All patients will undergo DBS surgery using regular surgical techniques. In this surgery a halo is attached to the skull. A CT scan is obtained. MRI - based targeting is conducted to identify to target location to implant the electrode deep in the brain. The patients have a burr hole placed just behind their hair line in the frontal lobe. Then a guide tube is inserted in the brain. Neurophysiological identification and confirmation of the target is conducted with multiple techniques including microelectrode recording to listen to single neurons in the brain, and macrostimulation to test clinical effect. The electrode is implanted and its clinical effect is tested. The halo is removed and the patient is taken to the recovery room. Patients will be randomized to undergo the surgery awake or asleep. Our current standard surgical technique is awake with intravenous anesthesia used briefly during drilling of a burr hole in the skull. 