PSL300H1 Chapter Notes - Chapter 10: Rhodopsin, Scattering, Exocytosis
Document Summary
Fovea and macula (ring of tissue around fovea) has most acute vision and the form the centre of the visual field: so when we look at an object, the lens focuses that object onto the fovea you get sharp focus, bipolar cells, so sensory information about light passes from the photoreceptors (corn or rod at fovea) and goes to the layer of bipolar cells, then to , ganglion cells, a layer of gc cells, can see that the axons of the ganglion cells actually form the optic nerve (cranial nerve 2) that leaves the eye at the optic disk, optic disk: doesn"t have photoreceptors so if images were project onto the. Photoreceptors transduce light into electrical signals (365 367: rods, these photoreceptors function well @ low light/night vision where objects are seen in b&w and not in colour, way more rods than cones 20:1 ratio expect @ the fovea (pit) where its just cones, cones, these photoreceptors are needed for: