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Talia Konkle, Alfonso Caramazza; Macro-organization of object responses in occipito-temporal cortex. Journal of Vision 2013;13(9):1388. doi: 10.1167/13.9.1388.
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© ARVO (1962-2015); The Authors (2016-present)
What are the dimensions that organize object representation? A common assumption is that the mosaic of category-selective areas are the only large-scale clusters, while the remaining object responses have more heterogenous response profiles with structure primarily at a finer spatial scale. In contrast, I will present results showing a large-scale of object responses spanning the entire ventral and lateral occipito-temporal cortex, based on the dimensions of animacy and size. Zones with systematic animacy-size preferences are arranged in a spoked organization emanating from the occipital pole along a single ventral-medial-to-lateral-to-dorsal-medial axis, bearing marked similarity to the organization of early visual areas. Regions selective for faces, bodies, and scenes fit within these zones, demonstrating consistent meso-scale structure. These results suggest that object cortex, just like early visual cortex, has structure that can be explained at multiple spatial scales. I will argue that understanding this multi-scale representation is valuable for inferring the nature of the underlying cognitive architecture.
Meeting abstract presented at VSS 2013
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