Vocab Review Unit 2.1a & 2.1b

Inattentional Blindness

Failing to see visible objects when our attention is directed elsewhere.

Perceptual Set

A mental predisposition to perceive one thing and not another.

Selective Attention

Focusing conscious awareness on a particular stimulus.

Change Blindness

Failing to notice changes in the enviroment.

Retinal Disparity

A binocular cue for perceiving depth. By comparing retinal images from the two eyes, the brain computes distance- the greater the disparity between the two things, the closer the objects.

Depth Perception

The ability to see object in three dimensions, although the images that strike the retina are two-dimensional; allows us to judge distance.

Perceptual Adaptation

The ability to adjust to changed sensory input, including including an artificially displaced or even inverted visual fields.

Monocular Cues

A depth cue, such as interposition or linear perspective, available to either eye alone.

Figure-ground

The organization of the visual field into objects that stand out from their surroundings.

Autokinetic Effect

The illusory movement of a still spot of light ina. dark room.

Binocular Cues

A depth cue, such as retinal disparity, that depends on the use of two eyes.

Color Constancy

Perceiving familiar objects as having consistent color, even if changing illumination.

Gesalt

AN organized whole; emphasize or tendency to integrate pieces of information into meaningful wholes.

Stroboscopic Movement

An illusion of continuous movement experienced when viewing a rapid series of slightly varying still images

Convergence

A cue to nearby objects distance, enabled by the brain combining retinal.

Perceptual Constancy

Perceiving objects as unchanging even as illuminations and retinal images change.

groupings

the perceptual tendency to organize stimuli into coherent groups.

Phi Phenomenon

An illusion of movement created when two or more adjacent lights bi=link on and off in quick succession.

Visual Cliff

A laboratory device for testing depth perception in infants and young animals.