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Abstract:
Abstract: Three tasks (copying geometrical figures, solving
visual mazes, and constructing objects from component parts) and
three methods (psychophysics, fMRI, behavioral neurophysiology)
were used to investigate the brain mechanisms of praxis in humans
and monkeys. The results of these studies showed that the
capacities of humans and monkeys are very similar, and that the
tasks above involve a distributed activation of several cortical
and subcortical brain areas. In addition, the neurophysiological
studies revealed some of the cellular mechanisms by which cortical
areas are processing information specific to different praxis
tasks.
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