PSYC 230 UIUC - Exam 3 UPDATED ACTUAL Questions and
CORRECT Answers
bottom-up processing process where physical stimuli influence how they perceive them
process where our existing knowledge of objects influences how
top-down processing
they perceive them
recognition ability to match a presented item with an item and memory
representation the storage/reconstruction of information when it is not in use
allows you to recognize/organize objects
perceptual organization
(i.e. grouping, segregation)
grouping organizing into groups (i.e. chairs, lights, plates, etc.)
, making sense of different surfaces in a scene (what is behind,
segregation
what is in front, etc.)
gestalt psychology whole is greater than sum of its parts
structuralism whole = sum of parts
distinguishing background vs foreground of a scene (top vs
figure-ground organization
bottom, background vs foreground)
figure-ground organization rules symmetry, convexity/concavity
good continuation, proximity, similarity, common region,
gestalt laws
connectedness, common fate
receptors used for edge V1 detectors
detection
carry meaning
- "Y'-shaped edge means a corner
role of angles and edges
- "T"-shaped edge means an occlusion
- angles show good continuation
geon basic component of an object
recognition by components (Biederman) objects are recognized by the relation of its geons
thoery
viewpoint invariance recognition of an object is independent of one's viewpoint
- viewpoint invariance is not foolproof (preferred viewpoint
problems wit recognition by leads to faster recognition)
components - many geon combinations can be perceived as multiple things
- faces/letter recognition
recognition is a point-by-point comparison to a stored "average
template theory
or ideal" representation
- multiple stored representations with all possible variations
problems with template theory (requires lots of memory space!)
- separate representations needed for all viewpoints
Where are shapes V4
representations located in the
brain?
Where is object recognition inferotemporal area
located in the brain?
- temporal lobe area w/many neurons
fusiform face area (FFA)
- responds to ALREADY KNOWN faces
- occipital lobe area
occipital face area (OFA)
- responds to face-like images
propagnosia inability to recognize faces
parahippocampal place area - selective area in temporal lobe
(PPA) - scene recognition
topographic agnosia inability to recognize landmarks/spatial layouts
extrastriate body area (EBA) recognizes body parts
part of the cerebral cortex in the lower portion of the temporal
inferotemporal (IT) cortex lobe, important in object recognition
- includes PPA, EBA, FFA
CORRECT Answers
bottom-up processing process where physical stimuli influence how they perceive them
process where our existing knowledge of objects influences how
top-down processing
they perceive them
recognition ability to match a presented item with an item and memory
representation the storage/reconstruction of information when it is not in use
allows you to recognize/organize objects
perceptual organization
(i.e. grouping, segregation)
grouping organizing into groups (i.e. chairs, lights, plates, etc.)
, making sense of different surfaces in a scene (what is behind,
segregation
what is in front, etc.)
gestalt psychology whole is greater than sum of its parts
structuralism whole = sum of parts
distinguishing background vs foreground of a scene (top vs
figure-ground organization
bottom, background vs foreground)
figure-ground organization rules symmetry, convexity/concavity
good continuation, proximity, similarity, common region,
gestalt laws
connectedness, common fate
receptors used for edge V1 detectors
detection
carry meaning
- "Y'-shaped edge means a corner
role of angles and edges
- "T"-shaped edge means an occlusion
- angles show good continuation
geon basic component of an object
recognition by components (Biederman) objects are recognized by the relation of its geons
thoery
viewpoint invariance recognition of an object is independent of one's viewpoint
- viewpoint invariance is not foolproof (preferred viewpoint
problems wit recognition by leads to faster recognition)
components - many geon combinations can be perceived as multiple things
- faces/letter recognition
recognition is a point-by-point comparison to a stored "average
template theory
or ideal" representation
- multiple stored representations with all possible variations
problems with template theory (requires lots of memory space!)
- separate representations needed for all viewpoints
Where are shapes V4
representations located in the
brain?
Where is object recognition inferotemporal area
located in the brain?
- temporal lobe area w/many neurons
fusiform face area (FFA)
- responds to ALREADY KNOWN faces
- occipital lobe area
occipital face area (OFA)
- responds to face-like images
propagnosia inability to recognize faces
parahippocampal place area - selective area in temporal lobe
(PPA) - scene recognition
topographic agnosia inability to recognize landmarks/spatial layouts
extrastriate body area (EBA) recognizes body parts
part of the cerebral cortex in the lower portion of the temporal
inferotemporal (IT) cortex lobe, important in object recognition
- includes PPA, EBA, FFA
