Projections from the 17/18 visual area transition zone to the ipsilateral visual field representation in the cat superior colliculus.

ABSTRACT

We demonstrate by retrograde tracing methods that the transition zone between visual cortical areas 17 and 18--where a representation of the ipsilateral visual field (IVF) has been described--projects to the IVF representation in the ipsilateral superior colliculus. The stratum griseum superficiale is the target of this retinotopically organized cortical projection to the rostral part of the superior colliculus.