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Neuron. 2002 Apr 25;34(3):479-90.

Eccentricity bias as an organizing principle for human high-order object areas.

Author information

1
Department of Neurobiology, Weizmann Institute of Science, Rehovot 76100, Israel.

Abstract

We have recently proposed a center-periphery organization based on resolution needs, in which objects engaging in recognition processes requiring central-vision (e.g., face-related) are associated with center-biased representations, while objects requiring large-scale feature integration (e.g., buildings) are associated with periphery-biased representations. Here we tested this hypothesis by comparing the center-periphery organization with activations to five object categories: faces, buildings, tools, letter strings, and words. We found that faces, letter strings, and words were mapped preferentially within the center-biased representation. Faces showed a hemispheric lateralization opposite to that of letter strings and words. In contrast, buildings were mapped mainly to the periphery-biased representation, while tools activated both central and peripheral representations. The results are compatible with the notion that center-periphery organization allows the optimal allocation of cortical magnification to the specific requirements of various recognition processes.

PMID:
11988177
DOI:
10.1016/s0896-6273(02)00662-1
[Indexed for MEDLINE]
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