Chapter 6: Visual Attention Flashcards
attention
the process of focusing on specific objects while ignorning others
attentional capture
when the properties of a stimulus grab attention, seemingly against a person’s will
covert attention
attention that you maintain without looking at the object
fixiation
when you briefly pause to process/recognize information
overt attention
attention that involves looking directly at the attended object
saccadic eye movement
a rapid jerky movement from one fixiation to another
visual salience
scene regions that are markedly different from their surroundings (like in color, contrast, movement, or orientation)
visual scanning
precueing
determine whether presenting a cue indicating where a test stimulus will appear enhances the processing of the test stimulus
saliency map
reveals which regions are visually different from the rest of the scene
visual search
when we look for an object among a number of other objects
same-object advantage
the faster responding that occurs whene enhancement spreads within an object
local field potential (LEP)
spatial attention
change blindness
rensink - showed a picture, blank screen, picture with object missing, blank screen, and orginal picture (multiple times). Found that there was a difficulting in detecting changes in scenes
continuity errors
aspects of a scene that should have maintained constant change from one shot to the next.
dual task procedure
inattentional blindness
subjects can be unaware of clearly visibke stimuli if they arent directing their attention to them (Mack and Rock)
balint’s syndrome
characterized by an inablity to focus and shift attention when multiple objects are present in a scene
binding
the process by which visual features are combined to create our perception of a coherent object
binding problem
how an object’s individual features become bound together
conjunction search
searching for a conjunction of two features in a stimulus
dishabituation
divided attention
people need to complete multiple tasks at once
feature integration theory (FIT)
feature search
habituation
focus attention stage
high load tasks
illusory conjunctions
combinations of features from different stimuli (shown a small red triangle and small green circle, might say you saw a small green triangle)
load theory of attention
low load tasts
perceptual capacity
perceptual completion
perceptual load
preattentive stage
occurs before we focus attention on an object - automatic, unconcious, and effortless
task-irrelevant stimuli
