Lateral Spread of Orientation Selectivity in V1 is Controlled by Intracortical Cooperativity.

ABSTRACT: Neurons in the primary visual cortex receive subliminal information originating from the periphery of their receptive fields (RF) through a variety of cortical connections. In the cat primary visual cortex, long-range horizontal axons have been reported to preferentially bind to distant columns of similar orientation preferences, whereas feedback connections from higher visual areas provide a more diverse functional input. To understand the role of these lateral interactions, it is crucial to characterize their effective functional connectivity and tuning properties. However, the overall functional impact of cortical lateral connections, whatever their anatomical origin, is unknown since it has never been directly characterized. Using direct measurements of postsynaptic integration in cat

SUBMITTER: Chavane F 

PROVIDER: S-EPMC3100672 | biostudies-literature | 2011

REPOSITORIES: biostudies-literature