PSY100H1 Chapter Notes - Chapter 4.2: Color Blindness, Ganglion Cell, Optic Chiasm
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PSY100H1 Full Course Notes
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Document Summary
Primary function of eye: gather light and change it into an action potential. Light refers to radiation that occupies a relatively narrow band of the electromagnetic spectrum. Low-amplitude = dim colours, high-amplitude = bright colours. Light waves also differ in terms of how many different wavelengths are being viewed at once. If there are a large variety of wavelengths being viewed at the same time colour seems washed out. Characteristics of light: hue colour of the spectrum. Intensity brightness: saturation colorfulness or density. Sclera white, outer surface of the eye. Cornea clear layer that covers the front portion of the eye and contributes to the eye"s ability to focus. Light enters the eye through the cornea and passes through the pupil. Pupil regulates the amount of light that enters by changing its size: dilates to allow more light to enter, constricts allow less light to enter.
