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Rajal Cohen
08-27-2005, 03:05 AM
We have an OptoTrak motion analysis system in our lab, and I've been using
it to observe physiological tremor of the finger in normal subjects. I
collect my data at 500 Hz and smooth it with a moving window over 5 frames.
The data look like one would expect (10 Hz tremor in most subjects), but I
understand that the OptoTrak is not normally used for this purpose. I'd
love to hear from anyone who has studied tremor with a camera based system.
I'd also appreciate hearing from some skeptics: what would it take to
convince you that this method was valid?

Thanks,
Rajal Cohen


Rajal Cohen, M.S.
Laboratory for Cognition and Action
Department of Psychology
The Pennsylvania State University
USA