PMID-17178410[0] A central source of movement variability.
- Small variations in preparatory neural activity were predictive of small variations in the upcoming reach
- About half of the noise in reaching movements seems to be from variability during the preparatory phase, as estimated from regressions between preparatory neural activity and variability in performance.
- even for a highly practiced task, the ability to repeatedly plan the same movement limits our ability to repeatedly execute the same movement.
- when cocontraction increases, EMG variablility increases, but movement variability decreases. (This is consistent with poisson-based noise source?)
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- see the related articles!!
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