Lecture 2 Flashcards
(30 cards)
Q: What do contours help us perceive?
A) Motion
B) Depth
C) Boundaries of objects
D) Color gradients
C
Q: What visual phenomenon is illustrated by the vase/faces illusion?
A) Depth perception
B) Simultaneous contrast
C) Figure-ground ambiguity
D) Color constancy
C
Q: Which of the following does NOT make object recognition difficult?
A) Distance
B) Familiarity
C) Lighting
D) Occlusion
B
Q: What condition involves the failure to recognize objects despite normal vision?
A) Visual neglect
B) Object agnosia
C) Prosopagnosia
D) Scotoma
B
Q: Which ability remains intact in individuals with object agnosia?
A) Recognizing faces
B) Detecting color
C) Drawing objects
D) Naming objects
C
Q: What principle helps us group visual components into whole objects?
A) Lateral inhibition
B) Trichromacy
C) Depth cues
D) Gestalt grouping
D
Q: In Marr’s model, what are objects segmented at?
A) Bright edges
B) Convex angles
C) Concavities
D) Random junctions
C
Q: What structure in Marr’s model serves as the base for assembling parts?
A) Principal axis
B) Primary cylinder
C) The thalamus
D) First edge filter
A
Q: According to Marr, why are some object orientations harder to recognize?
A) Brain doesn’t rotate images
B) Lighting affects recognition
C) Principal axis is obscured
D) Retinal fatigue
C
Q: What does Biederman’s model emphasize for recognition?
A) Surface brightness
B) Edge arrangements
C) Spatial frequency
D) Retinal disparity
B
Q: What are the 3D shapes used in Biederman’s model called?
A) Blobs
B) Geons
C) Voxels
D) Primitives
B
Q: How many geons are typically sufficient to describe most objects?
A) 1–2
B) 3
C) 10–12
D) 36
B
Q: A limitation of Biederman’s model is:
A) It can’t recognize rotated objects
B) It ignores lighting
C) It doesn’t differentiate within object classes
D) It fails to detect geons
C
Q: In visual processing, what does V1 project to?
A) LGN
B) V2
C) V4
D) Temporal cortex
B
Q: Cells in the temporal cortex are especially sensitive to:
A) Eye movement
B) Simple edges only
C) Binocular disparity
D) Shapes, colors, and textures
D
Q: Compared to V1, cells in the temporal cortex have:
A) Smaller receptive fields
B) No orientation selectivity
C) Larger receptive fields
D) No response to shape
C
Q: Cells in temporal cortex respond independently of:
A) Orientation
B) Position
C) Shape
D) Texture
B
Q: What is NOT a property of temporal cortex neurons?
A) Coding specific edges
B) Generalizing across position
C) Responding to specific shapes
D) Sensitivity to color and texture
A
Q: The “vocabulary of properties” model suggests object identity is:
A) Based on memory recall
B) Coded by individual cells
C) Determined by a large array of detectors
D) Defined only by shape
C
Q: Lesions in the temporal cortex often lead to:
A) Blindness
B) Color blindness
C) Object agnosia
D) Hearing loss
C
Q: What does Marr’s model fail to explain effectively?
A) Edge detection
B) Recognition across all orientations
C) Object segmentation
D) Principal axis use
B
Q: Biederman’s model suggests that a few geons can support recognition because:
A) The brain stores millions of templates
B) Geons have unique colors
C) They always appear in the same locations
D) Their spatial arrangements are stable across views
D
Q: Which of the following is a challenge for both Marr’s and Biederman’s models?
A) Recognizing motion
B) Handling occlusion
C) Differentiating individual objects in a class
D) Detecting shadows
C
Q: The human brain’s ability to group edges into objects relies heavily on:
A) Gestalt principles
B) Surface shading
C) Colour contrast
D) Retinal disparity
A
