Hi Hilary, No I haven't made a decision yet. I go see my neuro 10/6. Right now though, he says private insurance won't cover it. This is the first I have heard about a deeper version. Also, I don't have anything on what you are asking. All I can give you is Medtronic 1-800-328-0810 and they will send you a packet of info. In the info packet there is a card that you can send them for Clinical Information. Or maybe if you call, they will go ahead and include that info with the basic package. There is also a list of regional facilities that do the DBS. Wish I could help more. Whatever I do, I will do it at the Medical College of Georgia. That is where I had my pallidotomy. Let me know what yuo decide. Jeana 46/13 [log in to unmask] http://www.mindspring.com/~jeana/