Jon Boyes -> RE: focal dystonia speculation (Jan. 24 2005 8:10:14)
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ORIGINAL: Miguel de Maria I could see that in this case it would be easy for the brain to get rewired, with disastrous consequences. Thats not quite how it works with focal dystonia. What you hear is not the issue. In fact, practicing different things - different patterns of arpegio, different pairs of fingers in alternation etc, is a GOOD thing. The dangers of focal dystonia lie in overdoing fast repetitions of one pattern so that the brain eventually 'rewires' and cannot distinguish between the individual movements in that pattern (which has disastrous repercussions for control as a whole). A good example might be the flamenco trill - IAMI, played of course in the tremolo but as a kind of ornament in Solea and so on. You know how it feels to played that? The fingers work as a unit, yes? Its like a compound stroke. Basically, if you sat there for hours, practicing that fast trill over and over, and did this as a major part of your practice routine, you'd be asking for trouble. What starts out as a nice brain map in the cerebral cortex with the fingers individually represented, gradually overtime becomes smeared as the areas move closer together and then overlap. Eventually, the brain cannot fully distinguish which finger joint is which -you try and move one and the other finger moves, and so on. Jon (also BSC(Hons) Psych. ;-)
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