Specificity of neuronal responses in primary visual cortex is modulated by interhemispheric corticocortical input.

ABSTRACT: Within the visual cortex, it has been proposed that interhemispheric interactions serve to re-establish the continuity of the visual field across its vertical meridian (VM) by mechanisms similar to those used by intrinsic connections within a hemisphere. However, other specific functions of transcallosal projections have also been proposed, including contributing to disparity tuning and depth perception. Here, we consider whether interhemispheric connections modulate specific response properties, orientation and direction selectivity, of neurons in areas 17 and 18 of the ferret by combining reversible thermal deactivation in one hemisphere with optical imaging of intrinsic signals and single-cell electrophysiology in the other hemisphere. We found interhemispheric influences on both the st

SUBMITTER: Schmidt KE 

PROVIDER: S-EPMC2978237 | biostudies-literature | 2010 Dec

REPOSITORIES: biostudies-literature