Question 1

Discuss and compare photopic and scotopic vision.Discuss four of their differences being sure to include convergence and spectral sensitivity in your discussion.

Accepted Answer

40% for discussing differences...

Question 2

The blind spot is the place where axons of retinal __________ cells leave the eye.

Accepted Answer

ganglion

Question 3

Prior to migraine attacks,sufferers often experience

Accepted Answer

A)   headaches.
B)   fortification illusions.
C)   indigestion.
D)   amnesia.
E)   agnosia.F) A) and E)
G) C) and D)

Question 4

Most binocular cells in the monkey striate cortex,

Accepted Answer

A)   are hypercomplex.
B)   are simple.
C)   display ocular dominance.
D)   do NOT respond to retinal disparity.
E)   both C and DF) C) and E)
G) B) and D)

Question 5

Projections to the visual cortex from the lateral geniculate nuclei terminate in cortical layer

Accepted Answer

A)   I.
B)   II.
C)   III.
D)   IV.
E)   V.F) A) and C)
G) B) and D)

Question 6

The discovery that there are three kinds of cones,each with a different absorption spectrum,supports the __________ or trichromatic theory of color vision.

Accepted Answer

The answer of The discovery that there are three kinds...

Question 7

Scotomas are located by

Accepted Answer

A)   triangulation.
B)   perimetry.
C)   topography.
D)   scotometry.
E)   scatology.F) B) and C)
G) A) and C)

Question 8

The receptive field of a visual neuron is the area of the

Accepted Answer

A)   striate cortex within which stimulation can activate the neuron.
B)   striate cortex within which stimulation can inhibit the neuron.
C)   visual field within which the suitable visual stimulus can influence the firing of the neuron.
D)   retina within which stimulation with diffuse light can activate the neuron.
E)   either A or BF) A) and B)
G) B) and E)

Question 9

Complex visual cortex cells are __________ than simple cells.

Accepted Answer

A)   much bigger
B)   much smaller
C)   more numerous
D)   less numerous
E)   more inhibitoryF) B) and D)
G) C) and D)

Question 10

A nanometer is a

Accepted Answer

A)   tenth of a meter.
B)   hundredth of a meter.
C)   thousandth of a meter.
D)   millionth of a meter.
E)   billionth of a meter.F) B) and C)
G) B) and D)

Question 11

The Mach band demonstration is an excellent demonstration of contrast __________.

Accepted Answer

The answer of The Mach band demonstration is an excellent...

Question 12

Primary visual cortex neurons

Accepted Answer

A)   are circular.
B)   are grouped in functional vertical columns.
C)   have straight edges.
D)   are larger than the "off" areas.
E)   are rectangular.F) B) and D)
G) B) and C)

Question 13

Akinetopsia is associated with damage to

Accepted Answer

A)   MT/V5.
B)   primary visual cortex.
C)   posterior parietal cortex.
D)   the dorsal route.
E)   V3.F) C) and E)
G) None of the above

Question 14

Posterior parietal cortex is considered to be association cortex because it receives substantial sensory input from the

Accepted Answer

A)   primary visual cortex.
B)   thalamus.
C)   secondary areas of more than one sensory system.
D)   primary motor cortex.
E)   hypothalamus.F) A) and B)
G) A) and E) C

Question 15

Recent studies of the function of primary visual cortex neurons using natural visual scenes rather than simple artificial stimuli have discovered that

Accepted Answer

A)   some neurons respond only to trees.
B)   some neurons respond only to color.
C)   visual neurons are plastic: As a background scene changes, the way that a neuron responds to elements in its receptive field changes.
D)   all of the above
E)   both A and BF) None of the above
G) A) and E)

Question 16

The dorsal stream flows from primary visual cortex to

Accepted Answer

A)   inferotemporal cortex then to prestriate cortex.
B)   dorsal prestriate cortex then to inferotemporal cortex.
C)   inferotemporal cortex then to posterior parietal cortex.
D)   posterior parietal cortex then to inferotemporal cortex.
E)   dorsal prestriate cortex then to posterior parietal cortex.F) A) and B)
G) A) and C)

Question 17

In general,neurons of the retina-geniculate-striate system respond weakly to

Accepted Answer

A)   monocular stimuli.
B)   diffuse light.
C)   contrast.
D)   circles of light.
E)   circular edges.F) A) and E)
G) A) and B) B

Question 18

Color perception would be of less survival value if the color of an object

Accepted Answer

A)   did not change under different illumination.
B)   changed under different illumination.
C)   were not a hue.
D)   were not chromatic.
E)   were influenced by its wavelength.F) A) and B)
G) C) and E)

Question 19

With respect to vision,wavelength is to intensity as

Accepted Answer

A)   vision is to audition.
B)   wavelength is to color.
C)   color is to brightness.
D)   color is to loudness.
E)   color is to pattern.F) A) and C)
G) A) and D)

Question 20

Most lateral geniculate neurons terminate in

Accepted Answer

A)   the primary visual cortex.
B)   cortical layer IV.
C)   the contralateral hemisphere.
D)   both A and B
E)   both A and CF) All of the above
G) None of the above

Exam 6: The Visual System

Discuss and compare photopic and scotopic vision.Discuss four of their differences being sure to include convergence and spectral sensitivity in your discussion.

Correct Answerverified40% for discussing differences...View AnswerShow Answer

The blind spot is the place where axons of retinal __________ cells leave the eye.

Correct Answerverifiedganglion

Prior to migraine attacks,sufferers often experience

Correct AnswerverifiedShow Answer

Most binocular cells in the monkey striate cortex,

Correct AnswerverifiedShow Answer

Projections to the visual cortex from the lateral geniculate nuclei terminate in cortical layer

Correct AnswerverifiedShow Answer

The discovery that there are three kinds of cones,each with a different absorption spectrum,supports the __________ or trichromatic theory of color vision.

Correct AnswerverifiedShow Answer

Scotomas are located by

Correct AnswerverifiedShow Answer

The receptive field of a visual neuron is the area of the

Correct AnswerverifiedShow Answer

Complex visual cortex cells are __________ than simple cells.

Correct AnswerverifiedShow Answer

A nanometer is a

Correct AnswerverifiedShow Answer

The Mach band demonstration is an excellent demonstration of contrast __________.

Correct AnswerverifiedShow Answer

Primary visual cortex neurons

Correct AnswerverifiedShow Answer

Akinetopsia is associated with damage to

Correct AnswerverifiedShow Answer

Posterior parietal cortex is considered to be association cortex because it receives substantial sensory input from the

Correct AnswerverifiedC

Recent studies of the function of primary visual cortex neurons using natural visual scenes rather than simple artificial stimuli have discovered that

Correct AnswerverifiedShow Answer

The dorsal stream flows from primary visual cortex to

Correct AnswerverifiedShow Answer

In general,neurons of the retina-geniculate-striate system respond weakly to

Correct AnswerverifiedB

Color perception would be of less survival value if the color of an object

Correct AnswerverifiedShow Answer

With respect to vision,wavelength is to intensity as

Correct AnswerverifiedShow Answer

Most lateral geniculate neurons terminate in

Correct AnswerverifiedShow Answer

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