UNIT #3 Sensation And Perception Essential Q And V (P.2) Flashcards
Parallel processing
The processing of many aspects of a problem simultaneously; the brain’s natural mode of info processing for many functions, including vision. Contrasts with the step-by-step (serial) processing of most computers and or conscious problem solving
Young-Helmholtz Trichromatic theory
The theory that the retina contains three different colour receptors-one most sensitive to red, one to green, and one to blue-which when stimulated in combination can produce the perception of any colour
Opponent Processing Theory
The theory that opposing retinal processes (red-green, yellow-blue, white-black) enable colour vision. For example; some cells are stimulated by green and inhibited by red; others are stimulated by red and inhibited by green
Gestalt
An organized whole. Geslat psychologists emphasized our tendency to integrate pieces of info into meaningful wholes
Figure-ground
The organization of the visual field into objects (the figures) that stand out from their surroundings (the ground)
Grouping
The perceptual tendency to organize stimuli into coherent groups
Depth perception
The ability to see objects in three dimensions although the images that strike the retina are two-dimensional; allows us to judge distance
Visual cliff
A laboratory decide for testing depth perception in infants and young animals
Binocular cues
Depth cues, such as retinal disparity that depend on the use of two eyes
Retinal disparity
A binocular cue for perceiving depth; By comparing images from the retina in the two eyes; the brain computes distance - the greater the disparity between the two images, the closer the object
Monocular cues
Depth cues such as interposition and linear perspective available to either eye alone
Phi phenomenon
An illusion of movement created when two or more adjacent lights blink on and off in quick succession
Perceptual constancy
Preceding objects as unchanging (having consistent shapes, size, brightness and colour) even as illumination and retinal images change
Perceptual adaptation
In vision, the ability to adjust to an artificially displaced or even inverted visual field
Audition
The sense or act of hearing