Three-dimensional shape representation in monkey cortex.
Using fMRI in anesthetized monkeys, this study investigates how the primate visual system constructs representations of three-dimensional (3D) shape from a variety of cues. Computer-generated 3D objects defined by shading, random dots, texture elements, or silhouettes were presented either statically or dynamically (rotating). Results suggest that 3D shape representations are highly localized, although widely distributed, in occipital, temporal, parietal, and frontal cortices and may involve common brain regions regardless of shape cue. This distributed network of areas cuts across both "what" and "where" processing streams, reflecting multiple uses for 3D shape representation in perception, recognition, and action.
Sereno
Margaret E
ME
Max Planck Institute for Biological Cybernetics, Tübingen, Germany. margaret.sereno@tuebingen.mpg.de
Trinath
Torsten
T
Augath
Mark
M
Logothetis
Nikos K
NK
D000818:Animals; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000033:anatomy & histology / Q000502:physiology; D007091:Image Processing, Computer-Assisted; D008253:Macaca mulatta / Q000033:anatomy & histology / Q000502:physiology*; D008279:Magnetic Resonance Imaging; D009039:Motion Perception / Q000502:physiology; D009415:Nerve Net / Q000502:physiology*; D010364:Pattern Recognition, Visual / Q000502:physiology*; D010775:Photic Stimulation; D013028:Space Perception / Q000502:physiology*; D014793:Visual Cortex / Q000033:anatomy & histology / Q000502:physiology*