It's in the research category in the USA, not in various European countries. I have been involved in STN surgery since 1997. It's unfortunate that so many PD Americans have to wait such a long time or subject themselves to pallidotomy, with usually only short-lasting response and more side effects. By the way, I'll will fly to Chicago tomorrow to, among other things, attend a grand rounds at Rush at 4.00 p.m., where Dr. Warren Olanow a neurologist from Mt. Sinai Hospital in New York will talk about the treatment of PD in the early stages. I will also exchange some info with him regarding STN stimulation, since he has been involved in a few surgeries in NY on a research basis (It's not routine there either). Regards, Chris van der Linden