The focusing of conscious awareness on a particular stimulus
Failing to see visible objects when our attention is directed elsewhere
cocktail party effect
Ability to attend to only one voice among many
Gestalt theory (see things as a whole)
A task in which the participant has to name the colours in which words are printed. (stroop effect)
the tendency for vision to dominate the other senses
"an organized whole" or "configuration"
The organization of the visual field into objects that stand out from their surroundings
the perceptual tendency to organize stimuli into coherent groups
Grouping nearby figures together.
Group similar figures together
We perceive smooth, continuous patterns rather than discontinuous ones.
Because they are uniform and linked, we perceive each set of two dots and the line between them as one unit
Fill gaps to create whole objects
the ability to see objects in three dimensions although the images that strike the retina are two-dimensional; allows us to judge distance
A laboratory device for testing depth perception in infants and young animals
Depth cues, such as retinal disparity and convergence, that depend on the use of two eyes
A binocluar cue for perceiving depth: By encompassing images from the two eybealls, the brain computes distance--the greater the disparity (difference) between the two images, the closer the object.
A binocular cue for perceiving depth; the extent to which the eyes converge inward when looking at an object
Depth cues, such as interposition and linear perspective, available to either eye alone
if we assume that two objects are similar in size, we perceive the one that casts the smaller retinal image as farther away
A depth cue in which one object partly covering another is assumed to be closer in distance.
because light from distant objects passes through more atmosphere we perceive hazy objects as farther away than sharp,clear objects
-A gradual change from a coarse, distinct texture to a fine, indistinct texture signals increasing distance
We perceive objects higher in our field of vision as farther away
relative motion (motion parallax)
as we move, objects that are actually stable may appear to move
Parallel lines appear to converge with distance.
light and shadow
Nearby objects reflect more light to our eyes. Dimmer objects seem farther away.
An illusion of movement created when two or more adjacent lights blink on and off in quick succession
perceiving objects as unchanging even as illumination and retinal images change
Brain perceives continuous movement in a rapid series of slightly varying images
in vision, the ability to adjust to an artificially displaced or even inverted visual field
A mental predisposition to perceive one thing and not another
human factors psychology
A branch of psychology that explores how people and machines interact and how machines and physical environments can be made safe and easy to use
Controversial claim that perception can occur apart from sensory input. Said to include telepathy, clairvoyance, and precognition.
the study of paranormal phenomena, including ESP and psychokinesis