PS102 Lecture Notes - Lecture 4: Opponent Process, Additive Color, Color Blindness
Document Summary
We perceive a small part of the electromagnetic spectrum. Light waves measured in nanometers (billionths of meter) We can see light from 400 nm to 700 nm. Brightness: refers to the intensity of the light energy that is perceived. Saturation: refers to the purity of the colour. Cones most sensitive to blue/purple, green, and red wavelengths. Colours are perceived by additive mixture of impulses. If all are equally activated - white colour is produced. Red-green colour blind individuals should not be able to perceive yellow. If you stare at red and look away you"ll see green. Have rebound" effect with receptor responding and it"s opponent opposite reaction. There are three types of cones that are sensitive to short (blue) medium (green) and long (red) wavelengths. Opponent-process occurs in ganglion cells, neurons in relay stations and visual cortex. Perception and vision: gestalt principles of perceptual organization. Figure ground: the simplest form of organization. has foreground and background.
