Tom Thank you for your detailed reply - it certainly cleared up the apparent anomaly though I am still in the dark as to how you eliminated the activity element in favour of the visual. But as you say - enough is enough, and I will contain my soul in patience and hope you develop the device you mentioned. In closing my contribution to this discussion I would just like to reiterate my hope that your paper generates some response. And, once more my thanks for your contribution to the overall knowledge of PD. Dennis (not Brian - though I have no doubt Brian joins me in wishing you the best in your endeavours) ----- Original Message ----- From: Tom Riess <[log in to unmask]> To: <[log in to unmask]> Sent: Sunday, 15 August 1999 12:25 Subject: akinesia - dyskinesia etc. > Brian, > > A few final comments on this topic and then let's give the readers a rest.