PSY 100 Lecture Notes - Lecture 23: Trichromacy, Color Vision, Gestalt Psychology
Document Summary
Rods - detect difference between light and dark. Cones - focusing; good at picking up detailed information. Recognizing the specifics in what you see. We perceive the color of a tomato as red because it reflects red wavelengths of light. Color is a mental construction (i. e. , it happens in the brain) Young- helmholtz trichromatic theory of color vision. Basis of theory: the retina has three types of color receptors. Rare for them to not see color at all. The young-helmholtz theory does not account for yellow. The retina"s cones respond in varying degrees to color stimuli (young-helmholtz) Their responses are processes by opponent-process cells. Gestalt psychologists emphasized our tendency to integrate pieces of information into a more meaningful whole. Take information that we see in the world and group it into a whole. Figures are objects that stand out from their surroundings (ground) Gestalt psychology focused on different principles of grouping. Proximity - we group nearby figures together.
