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Exam 2
Sensation, Recognition, Agnosia, and Auditory Perception
55
Psychology
Undergraduate 4
03/28/2015

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Term
backwards masking
Definition
a later visual stimulus can dramatically affect the perception of an earlier one
Term
Beta Movement
Definition
illusory movement that occurs when perception makes inferences when viewing a series of static pictures in rapid succession, as in a movie
Term
Change Blindness
Definition
the failure to notice changes in visual stimuli (e.g., photographs) when those changes occur during a saccade
Term
closure
Definition
a Gestalt grouping principle that is used by visual perception to close up gaps in a percept to help identify a whole object
Term
conceptually driven processing
Definition
context and higher-level knowledge influence lower-level processes; top-down processing.
Term
connectionism
Definition
theoretical and computational approach applied to understanding the ways in which human cognition might perform its mental operations. The connections in a connectionist network are pathways. Network pathways exist both within and between levels of the network
Term
context
Definition
the influence of surrounding information and your own knowledge
Term
erasure
Definition
the masking or loss of information caused by subsequent presentation of another stimulus; usually in sensory memory (e.g., when the contents of visual sensory memory are degraded by subsequent visual stimuli, the loss of the original information); a specific kind of interference
Term
feature detection
Definition
a theoretical approach, most commonly in pattern recognition. Stimuli (patterns) are identified by breaking them into constituent features
Term
figure-ground
Definition
a Gestalt grouping principle that is used by visual perception to segregate what part of the percept corresponds to an object, and what corresponds to the background behind it
Term
fixation
Definition
in visual perception, the pause during which the eye is almost stationary and is taking in visual information; also, the visual point on which the eyes focus during the fixation pause
Term
focal attention
Definition
Neisser’s (1976) term for the mental process of focused visual attention, such as a mental redirection of attention; visual attention. Important for transfer to short-term memory
Term
fovea
Definition
the highly sensitive region of the retina responsible for precise, focused vision. Most of the fovea is cones, and most of the cones lie in the small area of the retina at the foveal pit.
Term
geons
Definition
geometric ions, from Biederman’s recognition-by-components model of human object recognition; geometric components that a visual object might be broken down into for the purpose of representation (and thus recognition) within the visual information system
Term
gestalt
Definition
an overall pattern, form, configuration, or percept. (Note: the term carries with it the assumption that decomposing a pattern into its components in some way loses the essential wholeness of the cohesive pattern
Term
good continuation
Definition
a Gestalt grouping principle that is used by visual perception to structure and organize together elements based on edges and trajectories so that a visually simple solution is obtained.
Term
hidden units
Definition
: the level between the input and hidden units in a simple three-level connectionist model.
Term
icon
Definition
the visual image that resides in iconic (visual sensory) memory; “snapshot.”
Term
inattention blindness
Definition
as a result of directing attention elsewhere, failing to see an object even if looking directly at it.
Term
interference
Definition
forgetting caused by the effects of intervening stimulation or mental processing
Term
input units
Definition
the level analogous to the receptors in a simple three-level connectionist model.
Term
masking
Definition
an effect, often in perception experiments, in which a mask or pattern is presented very shortly after a stimulus and disrupts or even prevents the perception of the earlier stimulus (see also erasure).
Term
modality effect
Definition
in sensory memory research, the advantage in recall of the last few items in a list when those items have been presented orally rather than visually.
Term
output units
Definition
the level at which the input pattern has been categorized in a simple three-level connectionist model.
Term
pandemonium
Definition
whimsical feature-detection model of pattern recognition (letter detection). (Selfridge)
Term
partial report condition
Definition
only the cued item or items are to be reported (e.g., Sperling used partial report to study iconic memory).
Term
perception
Definition
the process of interpreting and understanding sensory information.
Term
phi movement
Definition
illusory movement that occurs when perception makes inferences when viewing a series of adjacent images, as with blinking lights on a theater marquee
Term
precategorical acoustic storage
Definition
Crowder’s (1972) term for auditory sensory memory; called precategorical because categorization implies recognition.
Term
problem of invariance
Definition
sounds of speech are not invariant from one time to the next (they change depending on preceding and following sounds) yet humans understand spoken language.
Term
proximity
Definition
a Gestalt grouping principle that is used by visual perception to structure and organize together elements of a visual input that are nearer to one another in space.
Term
repetition blindness
Definition
the tendency to not perceive a pattern, whether a word, picture, or other visual stimulus, when it is quickly repeated.
Term
retina
Definition
back of the eye; contains the sensory apparatus for vision (rods and cones).
Term
saccades
Definition
the eye sweeps from one point to another in fast (jerky) movements; the voluntary sweeping of the eyes from one fixation point to another.
Term
sensation
Definition
the reception of stimulation from the environment and the initial encoding of that stimulation into the nervous system.
Term
sensory memory
Definition
the initial mental storage system for sensory stimuli. There are presumably as many modalities of sensory memory as there are kinds of stimulation we can sense.
Term
similarity
Definition
a Gestalt grouping principle that is used by visual perception to structure and organize together elements of a visual input that have similar visual features, such as texture, color, brightness, and so forth.
Term
span of apprehension
Definition
the number of individual items that can be heard (or seen) and immediately recalled. A common memory task on intelligence tests.
Term
template
Definition
stored model of a categorizable pattern. In theories of pattern recognition, a template is the pattern stored in memory against which incoming stimuli are compared to recognize the incoming patterns.
Term
three-eared man
Definition
procedure used to investigate echoic memory
Term
trans-saccadic memory
Definition
memory in visual perception that occurs across eye movements.
Term
visual persistence
Definition
the apparent persistence of a visual stimulus beyond its physical duration.
Term
visual sensory memory
Definition
temporary visual buffer that holds visual information for brief periods (250-500 ms) of time. The visual sensory register.
Term
whole report condition
Definition
report all items. Compare to partial report (report some items).
Term
averbach
Definition
masking
Term
biederman
Definition
recognition by components
Term
crowder
Definition
modality effect
Term
Darwin, turbey, and crowder
Definition
three-eared man procedure
Term
hubel and wiesel
Definition
implanted electrodes provide support for feature detection
Term
McClelland and rummelhart
Definition
connectionist account of word recognition
Term
neisser
Definition
the effect of context; echoic and iconic memory; focal attention
Term
sacks
Definition
agnosia
Term
selfridge
Definition
pandemonium
Term
sperling
Definition
iconic memory; whole vs. partial report
Term
warren and warren
Definition
phonemic restoration effect (conceptually-driven processing)
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