To test whether the most rapid visually evoked reach adjustments are cortically organized in humans, we have measured their latency in a healthy subject with complete agenesis of the corpus callosum. This condition precludes direct communication between left and right cerebral cortices and so, in this subject, a purely cortical visuomotor process would be expected to produce longer-latency responses to a target that appears in the visual hemifield contralateral to the responding limb (crossed...Expand abstract
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Evidence for subcortical involvement in the visual control of human reaching.
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