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Retinal ganglion cells projecting to the dorsal raphe and lateral geniculate complex in Mongolian gerbils
Katherine V Fite1, Melissa A Birkett, Andrea Smith
1Neuroscience and Behavior Program, Tobin Hall, University of Massachusetts, Amherst, MA 01003, USA. kfite@psych.umass.edu
Abstract:
Injections of rhodamine-B into the dorsal raphe nucleus (DRN) and Fluoro-Gold into the lateral geniculate nucleus (LGN) revealed double-labeled retinal ganglion cells (DL RGCs) projecting to both nuclei. The soma-size distribution of DL RGCs was compared with three other distributions: DRN-projecting RGCs, LGN-projecting RGCs, and a large sample of RGCs labeled via the optic nerve with DiI. DL RGC soma diameters fell primarily within the mid-to-upper size range of all three distributions. DL RGCs may provide information to both nuclei concerning comparable aspects of light and visual stimulation via collateralized axons.