Journal
NATURE NEUROSCIENCE
Volume 16, Issue 12, Pages 1870-1878Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/nn.3555
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Funding
- National Science Foundation [0918064]
- US National Institutes of Health [EY023322]
- Whitehall Foundation
- Radcliffe Institute for Advanced Study (Harvard University)
- Wellesley College
- National Institute of Biomedical Imaging and Bioengineering
- US National Institutes of Health Shared Instrumentation Grant Program and/or High-End Instrumentation Grant Program [S1ORR021110]
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [0918064] Funding Source: National Science Foundation
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Visual-object processing culminates in inferior temporal cortex (IT). To assess the organization of IT, we measured functional magnetic resonance imaging responses in alert monkeys to achromatic images (faces, fruit, bodies and places) and colored gratings. IT contained multiple color-biased regions, which were typically ventral to face patches and yoked to them, spaced regularly at four locations predicted by known anatomy. Color and face selectivity increased for more anterior regions, indicative of a broad hierarchical arrangement. Responses to non-face shapes were found across IT, but were stronger outside color-biased regions and face patches, consistent with multiple parallel streams. IT also contained multiple coarse eccentricity maps: face patches overlapped central representations, color-biased regions spanned mid-peripheral representations and place-biased regions overlapped peripheral representations. These results show that IT comprises parallel, multi-stage processing networks subject to one organizing principle.
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