In a message dated 11/4/98 8:00:22 AM Central Standard Time, [log in to unmask] writes: << I believe there are locations trying the subthalmic nucleus implantation. Does anyone have a list where this is being carried out? >> It is possible that there is such a program starting at St Louis University, School of Medicine. I seem to have a memory of reading that somewhere. Unfortunately the best number I can give you is 314-555-1212, (ask for St Louis U, School of Medicine Neurology/neurosyurgery Dept.) A note of caution: It is possible that the STN operation is associated with loss of mental acuity. I personally have thought about the one that simulates a pallidotomy (electrode planted in the globus pallidus). I don't know, but it just sounds better to me. Regards, WHH 55/19