Subcortical connections of area 17 in the tree shrew: an autoradiographic analysis.

The present anterograde autoradiographic study reveals several targets of the striate cortex (area 17) of the tree shrew which were not previously observed in studies which used anterograde degeneration methods; our data also confirm several previous findings. The results are discussed in the context of these projections modulating ascending visual information (claustrum, lateral intermediate nucleus, pulvinar, dorsal lateral geniculate, cells of the external medullary lamina, reticular nucleus of the thalamus, superficial collicular layers, and the anterior and posterior pretectal nuclei) or visuomotor information (putamen, caudate, ventral lateral geniculate, pontine gray, and the anterior and posterior pretectal nuclei).