Journal
BRAIN AND COGNITION
Volume 61, Issue 2, Pages 172-180Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bandc.2005.12.004
Keywords
magnocellular; random dots; movement; parvocellular; koniocellular; area MT; motion perception; vision; dyslexian
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The suggestion that coherent motion may serve as a test of magnocellular sensitivity is problematic. However, the nature of the problems depends on how the magnocellular system is defined. If this term is limited to subcortical entities, the problems are that subcortical neurons are not directionally selective, and that their receptive fields are too small to account for the spatial summation of coherent motion. If magnocellular system is defined to include cortical entities, such as area MT, one is faced with the fact that this definition itself is problematic as well as the problem that area MT is known to receive parvocellular and koniocellular inputs. (c) 2005 Elsevier Inc. All rights reserved.
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