A central source of movement variability.
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ABSTRACT:
SUBMITTER: Churchland MM
PROVIDER: S-EPMC1941679 | biostudies-literature | 2006 Dec
REPOSITORIES: biostudies-literature
Publications
A central source of movement variability.
Churchland Mark M MM Afshar Afsheen A Shenoy Krishna V KV
Neuron 20061201 6
Movements are universally, sometimes frustratingly, variable. When such variability causes error, we typically assume that something went wrong during the movement. The same assumption is made by recent and influential models of motor control. These posit that the principal limit on repeatable performance is neuromuscular noise that corrupts movement as it occurs. An alternative hypothesis is that movement variability arises before movements begin, during motor preparation. We examined this poss ...[more]
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