PSY1011 Study Guide - Final Guide: Color Vision, Color Blindness, Retina
8 Aug 2018
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Week 10 sensation & perception pt 2. Describing the experience of colour: basic colours = red, yellow, green & blue, colour is light (mixing light does not give the same effect as mixing paint, colours can be changed by; Saturation (adding white to a colour reduces saturation) Wavelength (increase the amount of light being reflected = brighter) The colours of objects are determined by the wavelengths they reflect. It reflects very long wavelengths (red) and absorbs all other wavelengths (yellow, green and blue). Reflectance curves = plot the % of light reflected for specific wavelengths. Chromatic colours = hues = selective reflectance = objects that reflect some wavelengths. Colour perception is unique for humans and unique for individual humans. Eg. honey bees are sensitive to ultraviolet light. Trichomatic theory of colour vision: (young & helmholtz) Three different receptors are responsible for colour vision (3 diff receptors in retina)
