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The Journal of Cognitive Neuroscience, Vol 9, 133-142, Copyright © 1997 by The MIT Press

ARTICLES

A Locus in Human Extrastriate Cortex for Visual Shape Analysis

Nancy Kanwisher, Roger P. Woods, Marco Iacoboni and John C. Mazziotta

Positron emission tomography (PET) was used to locate an area in human extrastriate cortex that subserves a specific component process of visual object recognition. Regional blood flow increased in a bilateral extrastriate area on the inferolateral surface of the brain near the border between the occipital and temporal lobes (and a smaller area in the right fusiform gyrus) when subjects viewed line drawings of 3-dimensional objects compared to viewing scrambled drawings with no clear shape interpretation. Responses were seen for both novel and familiar objects, implicating this area in the bottom-up (i.e., memory-independent) analysis of visual shape.


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Copyright © 1997 by The MIT Press.