title: Similarities and differences in motion processing between the human and macaque brain: evidence from fMRI.
abstract: 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.
authors.affiliation: K.U. Leuven, Laboratorium voor Neuro- en Pyschofysiologie, Campus Gasthuisberg, Herestraat 49, B-3000 Leuven, Belgium.
authors.forename: Guy A
authors.initials: GA
authors.lastname: Orban
authors.forename: Denis
authors.initials: D
authors.lastname: Fize
authors.forename: Hendrik
authors.initials: H
authors.lastname: Peuskens
authors.forename: Katrien
authors.initials: K
authors.lastname: Denys
authors.forename: Koen
authors.initials: K
authors.lastname: Nelissen
authors.forename: Stefan
authors.initials: S
authors.lastname: Sunaert
authors.forename: James
authors.initials: J
authors.lastname: Todd
authors.forename: Wim
authors.initials: W
authors.lastname: Vanduffel
mesh_terms: D000328:Adult; D000818:Animals; D001921:Brain / Q000166:cytology / Q000502:physiology*; D001931:Brain Mapping; D005133:Eye Movements; D005260:Female; D007839:Functional Laterality; D000882:Haplorhini; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D009038:Motion; D009039:Motion Perception / Q000502:physiology*; D010775:Photic Stimulation; D013045:Species Specificity; D014795:Visual Pathways; D014851:Wakefulness