Perception Flashcards
Perception
Organization and interpretation of sensations
Saccades
Quick movement of the eye from one fixation to another
Change blindness
Failure to notice changes in visual stimulus because of disruption of image
Inattention blindness
Failure to notice change in visual scene that are easily visible due to focused attention on one part of scene
Discontinuities in visual perception is due to…
1) Saccades and fixations
2) change blindness
3) blind spot
4) proximal vs distal stimulus
Iconic memory
Visual buffer that holds information for brief periods of time
Gestalt grouping principles
1) figure ground principle
2) closure
3) proximity
4) similarity
5) good continuation
6) common fate
Bottom up (data-driven) processing
Processing driven by feature detection
Top down processing
Processing driven by knowledge and context
Prosopagnosia
Face recognition deficit
Apperceptive agnosia
Deficit in perceiving whole patterns
Associative agnosia
Deficit in associating pattern with meaning
Agnosias indicate…
1) sensation and feature detecting are different processes and brain regions
2) combining features is critical
3) naming of objects is different processes and region
Sensation
Simple conscious experience associated with stimulus; first contact between organism and environment
