Influence of lateral connections on the structure of cortical maps

Carreira-Perpinan, M. A. and Goodhill, G. J. (2004) Influence of lateral connections on the structure of cortical maps. Journal of Neurophysiology, 92 5: 2947-2959. doi:10.1152/jn.00281.2004


Author Carreira-Perpinan, M. A.
Goodhill, G. J.
Title Influence of lateral connections on the structure of cortical maps
Journal name Journal of Neurophysiology   Check publisher's open access policy
ISSN 0022-3077
Publication date 2004-01-01
Sub-type Article (original research)
DOI 10.1152/jn.00281.2004
Volume 92
Issue 5
Start page 2947
End page 2959
Total pages 13
Place of publication Bethesda
Publisher American Physiological Society
Language eng
Abstract Maps of ocular dominance and orientation in primary visual cortex have a highly characteristic structure. The factors that determine this structure are still largely unknown. In particular, it is unclear how short-range excitatory and inhibitory connections between nearby neurons influence structure both within and between maps. Using a generalized version of a well-known computational model of visual cortical map development, we show that the number of excitatory and inhibitory oscillations in this interaction function critically influences map structure. Specifically, we demonstrate that functions that oscillate more than once do not produce maps closely resembling those seen biologically. This strongly suggests that local lateral connections in visual cortex oscillate only once and have the form of a Mexican hat.
Keyword Neurosciences
Physiology
Primary Visual-cortex
Ocular-dominance Columns
Striate Cortex
Orientation-preference
Dimension Reduction
Macaque Monkey
Cat
Circuits
Singularities
Coverage
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Queensland Brain Institute Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 26 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 27 times in Scopus Article | Citations
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Created: Thu, 20 Sep 2007, 03:28:00 EST