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- Title
A new neural framework for visuospatial processing.
- Authors
Kravitz, Dwight J.; Saleem, Kadharbatcha S.; Baker, Chris I.; Mishkin, Mortimer
- Abstract
The division of cortical visual processing into distinct dorsal and ventral streams is a key framework that has guided visual neuroscience. The characterization of the ventral stream as a 'What' pathway is relatively uncontroversial, but the nature of dorsal stream processing is less clear. Originally proposed as mediating spatial perception ('Where'), more recent accounts suggest it primarily serves non-conscious visually guided action ('How'). Here, we identify three pathways emerging from the dorsal stream that consist of projections to the prefrontal and premotor cortices, and a major projection to the medial temporal lobe that courses both directly and indirectly through the posterior cingulate and retrosplenial cortices. These three pathways support both conscious and non-conscious visuospatial processing, including spatial working memory, visually guided action and navigation, respectively.
- Subjects
VISUAL pathways; SPACE perception; SHORT-term memory; PREFRONTAL cortex; OPTIC nerve
- Publication
Nature Reviews Neuroscience, 2011, Vol 12, Issue 4, p217
- ISSN
1471-003X
- Publication type
journal article
- DOI
10.1038/nrn3008