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Multiple Choice Quiz
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1
The two-dimensional retinal image of the three-dimensional world confounds information about:
A)the shape of an object and its spatial configuration
B)the size and the distance of an object
C)the direction of an object's movement in depth and its dynamic form
D)all of the above
2
An allocentric frame of reference is:
A)viewpoint dependent
B)measured in non-metric units
C)invariant regardless of where an observer is sitting
D)the most convenient and meaningful reference for visual systems
3
The ability to make fine discriminations between offsets is called:
A)vernier acuity
B)spatial frequency discrimination
C)disparity detection
D)phase identification
4
When people are asked to point to an object in the peripheral regions of the visual field they:
A)are remarkably accurate
B)consistently point more centrally than the object's location
C)consistently point more peripherally than the object's location
D)are highly variable
5
When people, told to press a button at the onset of a target, are misinformed about the potential location of the target, they:
A)are just as fast as when they are told the correct location
B)are as fast as when they are given no prior information about the location
C)are slower than when they are given no prior information about the location
D)frequently fail to detect the target at all
6
Individuals wearing goggles that invert the visual world:
A)are unable to interact in the environment without assistance
B)eventually recover a sense of upright vision
C)adapt to the inversion by correcting motor behavior, without seeing the world upright
D)take as long to readapt to normal vision after the goggles are removed as they did to adapt to the inverted vision
7
Stereopsis works best for:
A)judging the relative distance of two objects
B)judging the absolute distance of an object
C)disambiguating stimuli undergoing binocularly rivalry
D)animals with laterally placed eyes
8
An example of an oculomotor cue to depth is:
A)stereopsis
B)motion parallax
C)convergence
D)interposition
9
The difference in the lateral separation between objects in the two eyes' retinal images is called:
A)binocular rivalry
B)parallax
C)retinal disparity
D)strabismus
10
The horopter is:
A)the imaginary plane marking the position of all objects located at the same perceived distance
B)the dividing line between crossed and uncrossed disparities
C)a device for measuring an object's eccentricity
D)both a and b
11
The primary contribution of random-dot stereograms to the study of depth perception is that they:
A)are easy stimuli to generate
B)show that feature matching isn't required for stereopsis
C)demonstrate that overlapping spatial frequency content isn't required for stereopsis
D)utilize binocular rivalry to great effect
12
Which of these statements is NOT true of binocular rivalry?
A)Perception is occasionally of a mosaic of both eyes' views.
B)Perception changes over time.
C)Changes in the suppressed stimulus can break suppression.
D)There is no known physiological correlate.
13
Stereoblindness:
A)affects over 25% of the population
B)usually causes strabismus as well
C)is correlated with little interocular transfer in adaptation experiments
D)is not associated with a lack of binocular experience
14
Which of these depth cues may help explain the moon illusion?
A)vergence
B)motion parallax
C)interposition
D)stereopsis
15
The perception of areas of an object that are occluded by another object is called:
A)filling-in
B)amodal completion
C)transparency
D)spreading
16
Which of these is NOT a monocular depth cue?
A)interposition
B)size
C)aerial perspective
D)accommodation
17
Motion parallax is related to stereopsis because both require:
A)two different views that are spatially offset
B)two eyes to operate
C)motion to operate
D)an horopter





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