Perception of Vision Flashcards
Color Perception
Wavelengths of light are physical, but our perception of color is purely psychological
Hue
variations described by names such as red, purple, blue, orange, etc.
Saturation
apparent purity, vividness, or richness
Lightness
dark to light
Trichromatic Theory
Theory proposes there are 3 types of photoreceptors, corresponding to blue, green, and red
Color blindness
two types of cones and are entirely missing the function of the third (dichromats)
two types of cones that work normally, and one type that works more weakly
Opponent Process Theory
Color perception is controlled by the activity of two opponent systems, only one color can be signaled at a time
Blue-yellow and red-green
Visual Acuity
Represents the clearness or sharpness of vision
Contrast Sensitivity
Represents the ability of the visual system to distinguish bright and dim components of a static image
Perceptual Organization
Perceptual organization is the process by which we figure out the relationships among potentially separate stimulus elements (e.g., parts, features, dimensions)
Figure and Ground
Figure is objects and Ground is background
Proximity
elements close together are perceived as a group
Similarity
similar elements (in terms of color, form, or orientation) are perceived together
Continuity
points connected in straight or smoothly curving lines are perceived together
Closure
open curves are perceived as complete forms
