Question 1

The domestic cat is a(n)

Accepted Answer

A)   excellent trichromat.
B)   robust dichromat.
C)   feeble dichromat.
D)   feeble trichromat.

Question 2

Rods and cones in the retina are analogous to

Accepted Answer

A)   hair cells in the nose.
B)   the tympanic membrane of the ear.
C)   papillae on the tongue.
D)   hair cells in the utricle of the vestibular system.

Question 3

Matching
-Ciliary muscles _____

Accepted Answer

A)   Contain(s)  photopigments
B)   First structure(s)  to refract light entering the eye
C)   Regulate(s)  the amount of light entering the eye
D)   Change(s)  the shape of the lens

Question 4

A person has trouble reaching and grasping objects but can identify objects visually. They most likely have

Accepted Answer

A)   damage to V1.
B)   optic ataxia.
C)   myopia.
D)   amblyopia.

Question 5

The receptive fields of retinal ganglion cells are

Accepted Answer

A)   complex.
B)   concentric.
C)   hypercomplex.
D)   eccentric.

Question 6

Stem cells might be able to help a blind person that has

Accepted Answer

A)   macular degeneration.
B)   myopia.
C)   a lesion in the LGN.
D)   damage to the primary visual cortex.

Question 7

Describe the probable neural processes involved in forming mental images as revealed by transcranial magnetic stimulation.

Accepted Answer

Transcranial magnetic stimulation (TMS) ...

Question 8

The G protein that is active when light strikes rods is

Accepted Answer

A)   cyclic GMP.
B)   opsin.
C)   retinal.
D)   transducin.

Question 9

If a person loses the ability to detect illusory contours, the structure that most likely has sustained damage is area _______ of the visual cortex.

Accepted Answer

A)   V1
B)   V2
C)   V3
D)   V4

Question 10

Ocular dominance slabs are found in the

Accepted Answer

A)   retina.
B)   superior colliculus.
C)   primary visual cortex.
D)   inferotemporal cortex.

Question 11

Molecules of photopigment are concentrated in the _______ of the rods.

Accepted Answer

A)   base
B)   nucleus
C)   inner segment
D)   outer segment

Question 12

In area V5 of the visual cortex, cells appear to be sensitive to _______ but not to _______.

Accepted Answer

A)   movement; wavelength
B)   wavelength; orientation
C)   form; movement
D)   wavelength; movement

Question 13

The blind spot in our visual field is created by _______ at the _______.

Accepted Answer

A)   densely packed cones; lens
B)   fewer rods than cones; fovea
C)   thicker photoreceptors; optic nerve
D)   a lack of photoreceptors; optic disc

Question 14

What experimental evidence suggests that a person born with no photoreceptors can be helped?

Accepted Answer

A)   Photoreceptors from immature mice can become incorporated into normal retinal circuitry when transplanted into genetically altered mice with dysfunctional rods.
B)   Photoreceptors from immature mice increase visual acuity when transplanted into genetically altered mice with dysfunctional rods.
C)   Bipolar neurons can respond to light directly when viruses induce retinal bipolar cells to express a light-sensitive ion channel.
D)   All of the above

Question 15

The _______ muscles are used to change the shape of the lens.

Accepted Answer

A)   orbital
B)   ciliary
C)   extraocular
D)   lentiform

Question 16

The process that enhances the boundaries of visual objects is called

Accepted Answer

A)   lateral inhibition.
B)   edge detection.
C)   spatial frequency filtration.
D)   spectral opponency.

Question 17

The human retina has about _______ million ganglion cells.

Accepted Answer

A)   1
B)   4
C)   40
D)   100

Question 18

Matching
-Iris

Accepted Answer

A)   Contain(s)  photopigments
B)   First structure(s)  to refract light entering the eye
C)   Regulate(s)  the amount of light entering the eye
D)   Change(s)  the shape of the lens

Question 19

Bipolar cells have receptive fields that

Accepted Answer

A)   are orientation specific.
B)   are color sensitive.
C)   are concentric.
D)   show a high rate of spontaneous activity.

Question 20

Write a coherent and informative paragraph incorporating each of the following terms or concepts: light rays; cornea; lens; ciliary muscles; iris; retina.

Accepted Answer

Light rays enter the eye through the cor...

Exam 10: Vision: From Eye to Brain

Bipolar cells have receptive fields that

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Stem cells might be able to help a blind person that has

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The human retina has about _______ million ganglion cells.

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Write a coherent and informative paragraph incorporating each of the following terms or concepts: light rays; cornea; lens; ciliary muscles; iris; retina.

Correct AnswerAnswered by ExamLex AILight rays enter the eye through the cor...View AnswerShow Answer

The domestic cat is a(n)

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Describe the probable neural processes involved in forming mental images as revealed by transcranial magnetic stimulation.

Correct AnswerAnswered by ExamLex AITranscranial magnetic stimulation (TMS) ...View AnswerShow Answer

If a person loses the ability to detect illusory contours, the structure that most likely has sustained damage is area _______ of the visual cortex.

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Molecules of photopigment are concentrated in the _______ of the rods.

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A person has trouble reaching and grasping objects but can identify objects visually. They most likely have

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What experimental evidence suggests that a person born with no photoreceptors can be helped?

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The blind spot in our visual field is created by _______ at the _______.

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Rods and cones in the retina are analogous to

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Matching -Iris

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The G protein that is active when light strikes rods is

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Ocular dominance slabs are found in the

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The _______ muscles are used to change the shape of the lens.

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The process that enhances the boundaries of visual objects is called

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In area V5 of the visual cortex, cells appear to be sensitive to _______ but not to _______.

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Matching -Ciliary muscles _____

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The receptive fields of retinal ganglion cells are

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Light rays enter the eye through the cor...
View Answer

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Transcranial magnetic stimulation (TMS) ...
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The blind spot in our visual field is created by _ at the _.

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In area V5 of the visual cortex, cells appear to be sensitive to _ but not to _.

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