An anatomical investigation of visual inputs to the cat orbital cortex

The orbital region of the cortex in the cat is known to be involved in multimodal sensory functions. Visual afferent connections of this area have been investigated using the horseradish peroxidase technique. Our results demonstrate the existence of projections from ipsilateral thalamic nuclei essentially at the suprageniculate and magnocellular medial geniculate junction, well known to have multimodal physiological properties.