PSYC51H3 Lecture Notes - Lecture 1: Electromagnetic Spectrum, Lateral Geniculate Nucleus, Vitreous Body
Document Summary
Outline: light and the eye, structure of the eye, the retina, the lateral geniculate nucleus. Structure of the eye: non-optical components, optical components, neural components. Non-optical components: sclera: tough, dense outer fibrous coat, choroid: contains a network of blood vessels. Neural components: retina: contains photoreceptors, collector cells, retinal ganglion cells, optic nerve: ganglion cell axons, retina is a direct extension of the central nervous system. The eye and camera: both are optical devices designed to record visual images on light sensitive material. Camera: light goes through aperture, focused by lens, and focused on film. Eye: light goes through pupil, focused by cornea and lens, and focused on photoreceptors of retina: but the eye does much more! Rods highest density in fovea highest density outside of fovea, in periphery need bright light can see in dim light. Insensitive in dim light: good colour sensation.
