Functional diversity of human intrinsically photosensitive retinal ganglion cells

In this study, we used a human organ donor preparation method to measure human ipRGCs’ photoresponses. We discovered three functional ipRGC subtypes with distinct sensitivities and responses to light. The response of one ipRGC subtype appeared to depend on exogenous chromophore supply, and this response is conserved in both human and mouse retinas. Rods and cones also provided input to ipRGCs; however, each subtype integrated outer retina light signals in a distinct fashion.
Source: ScienceNOW - Category: Science Authors: Tags: Medicine, Diseases, Neuroscience reports Source Type: news