PSYC 363 Lecture Notes - Lecture 13: Color Constancy, Chromatic Adaptation, Green Paper
Document Summary
Chromatic adaptation: prolonged exposure to chromatic colour leads to: Receptors adapt when colour selectively bleaches specific cone pigment. Adaptation to light sources lead to colour constancy. P"s shown coloured paper in 3 conditions: baseline paper and observer in white light. See paper as green: observer not adapted paper illuminated by red light; observer by white. Paper looks much more red: observer adapted paper and observer illuminated by red light. Baseline: green paper is seen as green. Observer not adapted: perception of green paper is shifter toward red. Observer adapted: perception of green paper is slightly shifted toward red: partial colour constancy was shown in this condition. The dress that looked white and amber but was in fact black and blue! Brain brightens things in shadow correction of colour in shadow can be extreme! The bright background makes you think the dress is in shadow so your perception system corrects for the shadow and lightens the dress up.