Journal
BRAIN RESEARCH REVIEWS
Volume 36, Issue 2-3, Pages 96-107Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0165-0173(01)00085-6
Keywords
feedforward; feedback; cortical areas; primate; dorsal stream; ventral stream; magnocellular
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Cortical processing of visual information requires that information be exchanged between neurons coding for distant regions in the visual field. It is argued that feedback connections are the best candidates for such rapid lng-stance interconnections. In the integrated model, information arriving in the cortex from the magnocellular layers of the lateral geniculate nucleus is first sent and processed in the parietal cortex that is very rapidly activated by a visual stimulus. Results from this first-pass computation are then sent back by feedback connections to areas V1 and V2 that act as 'active black-boards' for the rest of the visual cortical areas: information retroinjected from the parietal cortex is used to guide further processing of parvocellular and koniocellular information in the inferotemporal cortex. (C) 2001 Elsevier Science B.V. All rights reserved.
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