PSL300H1 Study Guide - Final Guide: Cyan, Visual Angle, Ganglion Cell
7 Jan 2017
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Under dim light, because rods are active in our peripheral vision, and are more light-sensitive that cones are. When light hits fovea, (cid:272)o(cid:374)es do(cid:374)"t dete(cid:272)t it as (cid:449)ell as the (cid:396)ods i(cid:374) the pe(cid:396)iphe(cid:396)y. Recall: we have a nice focused image on the retina, so not the job is to convert light energy into electrical activity in the brain to start analyzing the image there. This starts with the photoreceptors that transduce the energy cones and rods operate using visual pigments. Secondary sensory neurons are the bipolar cells which project to the retinal ganglion cells, which we know quite a lot about, having some interesting properties receptive fields and classes. The axons of retinal ganglion cells form the optic nerve to the brain. Photoreceptors are in the retina, light sensitive neurons that transduce light energy to electrical energy. Photoreceptors are neurons vision is a system where receptor cells themselves are neurons transduce adequate stimulus (light)
