In July and September 1994, /I had these two operations done at the Royal Nofth Shore Hospital in Sydney Australia.One to the left and one to the right side of the brain. Prior to the operations I had uncontrollable movements of both arms, and suffered severe leg cramps from 3am until it was time for the 1st dose of sinemet. During the first op, I developed severe cramps in the legs and had to be restrained on the operating table; cramps were a result of delaying the first dose of the day. so the surgeon coud see the result of the stimulation ( by the probe) it was interesting during the operation as you are very much part of the action. The surgeon was looking for a specific response from me ie. tingling of the right hand; there was no mistaking it when he found it. The computer was then told to control the incision and the brain impulses no longer went where they shouldn't. In the recovery room I can remember looking at my now stationary right arm with tears of joy rolling down my face. The next 3 months were hell, as I couldn't get the dose anywhere near right; What was ok for the right side was not suitable for the left. The second op fixed this. The "only" complication during this op was a "Grand Mal" seizure which delayed the operation for a few days; I dont remember any of it, and there was no pain during either op( except when the frame was being screwed to my head) How am I now? still no shakes in either arm, and no bad cramps; although I get tightness in the lower legs and toes splaying, which wakes me up. I have off periods about every two hours and have difficulty with speech and walking at these times. Would I have the operations again? if given a second chance? I certainly would. I have had Parkinsons Disease for about 20 years. I hope this is helpful to those contemplating having the operation. Philip Dunn