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It seems to me that we have had a most fruitful discussion on the subject of Dyskinesia. I was amazed when I looked back and found that I first raised the subject only 2 weeks ago. My question remains unanswered, apart from my own theories: I shall of course continue to polish my version, and pursue anyone who can suggest any errors or changes in my model. Tom Riess' thoughts on Dyskinesias and the visual system. provided a fascinating insight into an area which has been largely ignored. Looking back, I find it difficult to understand how I could fail to realise that the visual system must play a valuable part in the control of movement, and even though it may not cause the dyskinesia, there are strategies which can help to reduce the severity of the Dyskinesias. I am in no way trying to belittle Tom's work by attempting to fit it into my model, where it resides as part of the feedback system, operating in parallel and in series with the feedback nervous system. Bye the way, a thought just popped up- Is it purely coincidental that when performing a pallidotomy on a PWP, the adjacent area close to the operation forms part of the visual system!! I must continue to pursue this subject because, over the world, PWPs are sitting at home, bravely suffering the ravages which even the earlier years can cause, simply because their neuro has told them that they are 'buying time' in later years when levodopa 'begins to show unexpected motor responses'. If I am right, their efforts are a COMPLETE WASTE OF TIME (sorry about the caps), but don't you think we are entitled to a definitive statement? -- Brian Collins <[log in to unmask]>