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