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Published on: October 6, 2014
Cross-modal innervation of primary visual cortex by auditory fibers in congenitally anophthalmic mice
L K Laemle1, N L Strominger, D O Carpenter
1Department of Ophthalmology, UMDNJ-New Jersey Medical School, 30 Bergen Street, Rm. 1409, Newark, NJ 07103, USA. laemlelb@umdnj.edu
Abstract:
Auditory-visual cross-modal innervation was examined in control (sighted, ZRDCT-N) and congenitally anophthalmic (eyeless, ZRDCT-AN) mice using electrophysiological recording and pathway tracing with carbocyanine dyes. Electrophysiological data demonstrate that the primary visual cortex of congenitally eyeless, blind, mice receives auditory stimuli. Neuroanatomical data demonstrate a direct connection between the inferior colliculus (IC) and visual cortex. Our experiments provide new information about how the brain adapts to the loss of sight.
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