Abstract
We have combined functional maps of retinotopy (eccentricity and meridian
mapping), object category, and motion in a group of subjects to explore
the large-scale topography of higher-order object areas. Our results
reveal seven consistent category-related entities situated in the
occipito-temporal cortex adjoining early visual areas. These include
two face-related regions, three object-related regions, and two building-related
regions. Interestingly, this complex category-related pattern is
organized in a large-scale dorso-ventral mirror symmetry of object
category. Furthermore, correlating this pattern to the map of visual
field eccentricity, we found that the entire network of areas could
be related to a single and unified eccentricity map. We hypothesize
that this large-scale organization points to a possible development
of high-order object areas through extension and specialization of
a single proto-representation.
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