PSYCH 1XX3 Lecture Notes - Lecture 3: Visual Cortex, Color Blindness
Document Summary
Ability to see colour is not because the objects are inherently colourful. Objects and surfaces reflect certain wavelengths of the visible spectrum. Reflected wavelengths trigger specific patterns of responses in our brains that give rise to our subjective experience of colour. Unit 2: evolution of colour vision why and who. Bulls do not see a cape as red, but as a piece of grey moving cloth. Many birds, fish, reptiles and insects have excellent colour vision. Mammals: colour vision is limited to primates. Birds, fish and insects are able to see colours we don"t see at all (uv end) Few colour receptor types activity combine in various proportions to make every colour. Subtractive colour mixing: when coloured pigments selectively absorb some wavelengths and reflect others: all wavelengths absorbed except those that two pigments both reflect, primary + complementary = brown.
