Binocularity and single cell acuity are related in striate cortex of corpus callosum sectioned and normal cats

Cats with corpus callosum section at 4-37 postnatal days underwent electrophysiological recording in striate cortex after they reached adulthood. Single cells were examined to determine both their ocular dominance and spatial frequency threshold (acuity). Data were analyzed for each cat according to the extent of binocular interaction (binocularity) and the mean striate acuity. Both visual functions were found to be significantly related to the age at which the corpus callosum section occurred, with the greatest deficits in visual function resulting from callosum section at the younger ages. There was a significant relationship between striate binocularity and acuity in the callosum sectioned, as well as in normal, cats. This suggests that visual resolution is at least partially determined by the ability to integrate information from both eyes.