Question 1

Refer to the figure.
 The M unit would best respond to a(n) _______ direction of motion.

Accepted Answer

A)   upward
B)   downward
C)   leftward
D)   rightward
E)   diagonal D

Question 2

Refer to the figure.
 The image on the right illustrates

Accepted Answer

A)   the role of the comparator.
B)   saccadic suppression.
C)   a pattern of eye movements.
D)   the phenomenon known as vergence.
E)   points of binocular disparity. C

Question 3

The motion we interpret as people moving around from a few animated dots is called _______ motion.

Accepted Answer

A)   apparent
B)   induced
C)   real
D)   biological
E)   ambiguous D

Question 4

What is the "aperture problem"?

Accepted Answer

A)   We cannot perceive motion seen through apertures.
B)   We cannot perceive forms seen through apertures.
C)   Global edge motion seen through several apertures is ambiguous.
D)   Local edge motion seen through a single aperture is ambiguous.
E)   We perceive all motion seen through an aperture as horizontal motion.

Question 5

An area of the visual system that receives one copy of the order issued by the motor system when the eyes move is called

Accepted Answer

A)   a comparator.
B)   the superior colliculus.
C)   the caudal midbrain.
D)   the parietal lobe.
E)   the cerebellum.

Question 6

The "focus of expansion" informs you of the direction

Accepted Answer

A)   in which you are looking.
B)   in which you are moving.
C)   from which you came.
D)   of the largest object in your visual field.
E)   of the smallest object in your visual field.

Question 7

A(n) _______ eye movement rapidly changes fixation from one object or location to another.

Accepted Answer

A)   tracking
B)   saccade
C)   smooth pursuit
D)   scan
E)   adapting

Question 8

Imagine that you are at Niagara Falls, staring at the falling water for a few minutes. When you look away from the water at the crowd of people, the people seem to be floating upward. What phenomenon have you just experienced?

Accepted Answer

A)   Akinetopsia
B)   Tau
C)   Focus of expansion
D)   Vergence eye movements
E)   Motion aftereffect

Question 9

Why is the middle temporal area (MT) important for motion perception, and how has it been studied?

Accepted Answer

The answer of Why is the middle temporal area (MT)...

Question 10

A field of globally moving dots can make stationary targets in the periphery seem to disappear in a phenomenon known as

Accepted Answer

A)   motion aftereffect.
B)   motion-induced sensitivity.
C)   motion-induced blindness.
D)   saccadic suppression.
E)   correlated dot motion.

Question 11

Which statement about the development of motion perception in humans is false?

Accepted Answer

A)   Reflexive eye movements to moving targets are present in newborns.
B)   V1 neurons in newborns have adult-like sensitivity.
C)   Sensitivity to global motion matures at about 3-4 years of age.
D)   Sensitivity to visual motion is fully developed at birth.
E)   Sensitivity to motion-defined form and biological motion takes more than three years to develop.

Question 12

The reduction of visual sensitivity that occurs when we make saccadic eye movements is called

Accepted Answer

A)   attentional blink.
B)   vigilance decrement.
C)   saccadic enhancement.
D)   saccadic suppression.
E)   saccadic blindness.

Question 13

Refer to the figure.
 This is an example of _______, which is the changing angular position of points in an image that one experiences as they move through the world.

Accepted Answer

A)   an optic flow field
B)   a positional change
C)   an optic array
D)   motion perspective
E)   tau

Question 14

_______ describes the changing angular positions of points in a perspective image that we experience as we move through the world.

Accepted Answer

A)   Biological motion
B)   First-order motion
C)   Optic flow
D)   Second-order motion
E)   Apparent motion

Question 15

A _______-defined object is one that is delineated by differences in reflected light.

Accepted Answer

A)   contrast
B)   texture
C)   luminance
D)   color
E)   hue

Question 16

What is the difference between smooth pursuit and saccadic eye movements?

Accepted Answer

The answer of What is the difference between smooth pursuit...

Question 17

In the Newsome and Pare paradigm, an observer's task is to

Accepted Answer

A)   determine whether or not motion is observed.
B)   experience a motion aftereffect.
C)   identify the direction of motion of the correlated dots.
D)   trace moving dots.
E)   perceive the dots as a moving person.

Question 18

What is the difference between first-order and second-order motion?

Accepted Answer

The answer of What is the difference between first-order and...

Question 19

_______ is a rare neuropsychological disorder in which the affected individual has no perception of motion.

Accepted Answer

A)   Akinetopsia
B)   Motion agnosia
C)   Motion blindness
D)   Prosopagnosia
E)   Hyperopia

Question 20

During smooth pursuit, the eyes move

Accepted Answer

A)   steadily, to follow a moving object.
B)   rapidly, while jumping from one object to the next.
C)   independently.
D)   with the head.
E)   to the smoothest part of an object.

Exam 8: Visual Motion Perception

Refer to the figure. The M unit would best respond to a(n) _______ direction of motion.

Refer to the figure. The image on the right illustrates