PSYC 1010 Chapter Notes - Chapter 19: Color Vision, Retina, Trichromacy

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: Rebecca Jubis

Document Summary

Module 19: vision - sensory & perceptual processing. Wavelength: distance from one wave peak to the next. (determines the colour/hue, shorter waves of blue-violet light to longer waves of red light) Hue: the colour we experience (red, green, blue) Intensity: amount of energy in a light wave, perceiving as brightness determined by the wave"s amplitude (height). Pupil: adjustable opening in centre of eye through which light enters. Iris: coloured muscle ring that dilates/constricts to light intensity that controls the size of pupil. Lens: behind the pupil, focuses images onto the retina. Retina: inner surface of eye that begins processing visual info. Accommodation: process of lens changing shape to focus near or far objects on retina. Information processing in the eye & brain. Rods: retinal receptors that detect black, white, grey. Cones: retinal receptors that function in daylight, detect ne detail & colour. Some with direct connection to brain for more precise info. 130 million rods & cones in retina.