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Mod 22

Vision/ Perceptual processing

TermDefinition
frequency (wavelength) Hue or color/ Low frequency = reds/ High frequency = blues
Amplitude (height) Color intensity/ Low amplitude= faded/ High amplitude = bright
Cornea Clear protective layer / 1st place light enters
Pupil Small adjustable opening in the center of the eye/ 2nd step for light
Iris colored muscle tissue/ controls the size of pupil opening
Lens transparent structure behind the pupil/ Accommodation: changes shape to help focus images on the retina. /step 3 for light
Retina light-sensitive inner surface of the eye/ contains rods & cones (photoreceptors)/ step 4 for light
Cones inner part of retina, detect color
BotH contain bipolar & ganglion cells (process of transduction)
Optic Nerve comprised of the axons of the ganglion cells./ carries neural impulses from the eye to the brain. (Thalamus, visual cortex)
Blind spot Point at which optic nerve leaves the eye. No rods or cones here.
Myopia Lens focuses image in front of the retina/ Nearsighted
Hyperopia Lens focuses image behind the retina/ Farsighted
Color-blindness Caused by a defect in the cones/ Typically red-green deficiency/ More common in males
Young-Helmholtz Trichromatic Theory the retina contains three different types of cones, which, when stimulated in combination, can produce any color EX-Like printer cartridges
Opponent-Process Theory theory that cones are paired together (red-green, blue-yellow, white-black) to enable color vision. /Activation of one color of the pair inhibits activation of the other.
Motion Parallex An object appears to move faster if it is closer to you than if it is farther away Ex: A car passing by you on the highway, vs looking down at a car from a plane
Retinal Disparity Depth perception cue/ Occurs because your eyes do not see identical fields of vision/ Explains magic eye tricks
Monocular Cues Only require one eye
Binocular Cues Depth perception
Parallel processing thinking about many aspects of a problem simultaneously.
Created by: Sophia154
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