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Functions of the extrageniculate visual system. Tetsuro OGAWA 1 1Department of Physiology, Akita University School of Medicine pp.390-398
Published Date 1991/6/10
DOI https://doi.org/10.11477/mf.1431900140
  • Abstract
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 Considerable visual abilities survive damage to striate cortex in primates. These spared abilities, collectively referred to as blindsight, suggest that there are extrageniculate visual pathways (EGV) besides the geniculostriate visual pathway (GSV).

 Visual information reaching the striate cortex is further processed along two separate cortico-cortical pathways; the dorsal pathway consisting of V1-MT-MST-IPL and the ventral pathway consisting of V1-V2-V4-IT. The ventral pathway concerns itself primarily with color and pattern vision and the dorsal one is involved in processing visuomotor integration, movement of objects and selective attention. The dorsal pathway is anatomically more closely related to EGV and the ventral one is completely dependent on GSV. In this article I reviewed a role played by EGV, emphasizing that it is involved in selective attention and visuomotor integration.


Copyright © 1991, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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