Journal
NEUROPSYCHOLOGIA
Volume 41, Issue 13, Pages 1757-1768Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0028-3932(03)00177-5
Keywords
fMRI; cortical regions; intraparietal sulcus; primates
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The present report reviews a series of functional magnetic resonance imaging (fMRI) activation studies conducted in parallel in awake monkeys and humans using the same motion stimuli in both species. These studies reveal that motion stimuli engage largely similar cortical regions in the two species. These common regions include MT/V5 and its satellites, of which FST contributes more to the human motion complex than is generally assumed in human imaging. These results also establish a direct link between selectivity of MT/V5 neurons for speed gradients and functional activation of human MT/V5 by three-dimensional (3D) structure from motion stimuli. On the other hand, striking functional differences also emerged: in humans V3A and several regions in the intraparietal sulcus (IPS) are much more motion sensitive than their simian counterparts. (C) 2003 Elsevier Ltd. All rights reserved.
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