PSYCH 1XX3 Study Guide - Final Guide: Retinal Ganglion Cell, Color Vision, Color Constancy

• School: McMaster University
• Department: Psychology
• Course: PSYCH 1XX3
• Professor: Christopher Teeter

Document Summary

Perception of colour allows us to distinguish features of objects when borders and contours don"t. Processing of colour begins at the retina 3 types of cones respond best to 3 diff. wavelengths of light: red, blue, and green colour vision is trichromatic (3 kinds of cones) Colour perception is not an absolute process there is an abstracting process that occurs. Colour is a constant property the wavelength of light the objects reflects is its colour. Humans, bees, and macaque monkeys are trichromats (3 types of cones) bees are sensitive to uv light. Some animals (ex. goldfish, pigeons, and ducks) have eyes that contain 4 types of retinal receptors. Other animals (ex. rabbits, squirrels, and cats) are dichromats (2 types of cones) Some are monochromats (lack chromatic vision entirely) resolve objects based on differences in brightness and contrast only. Pigments reflect some wavelengths, but absorb all others (ex.