BIFURCATED PROJECTIONS OF RETINAL GANGLION-CELLS BILATERALLY INNERVATE THE LATERAL GENICULATE NUCLEI IN THE CAT

Cats were injected with the fluorescent retrograde tracers, Fluoro-Gol d (FG) and Evans Blue (EB), into the left and right lateral geniculate nuclei (LGN), respectively. About 4.56% of the ganglion cells in the temporal retina were double-labeled by these dyes. 4.7% of these cells were of the large type, 30.3% were of the medium type, and 65% were c lassified as cells of the small type. These results indicate that memb ers of all three ganglion cell size classes, mainly those of small typ e, bilaterally innervate the LGN via axonal bifurcation.