Question 1

Photopigment regeneration occurs during

Accepted Answer

A) light adaptation. 
B) dark adaptation. 
C) light adaptation for rods and dark adaptation for cones. 
A) light adaptation. 
B) dark adaptation. 
C) light adaptation for rods and dark adaptation for cones.

Question 2

The eyes of most prey animals are positioned

Accepted Answer

A) in the front of the head. 
B) on the sides of the head. 
C) to provide high-resolution depth perception. 
A) in the front of the head. 
B) on the sides of the head. 
C) to provide high-resolution depth perception.

Question 3

In a center-surround receptive field,lateral inhibition

Accepted Answer

A) is due to inhibitory signals sent from one photoreceptor to an adjacent photoreceptor. 
B) is due to inhibitory signals sent from horizontal cells to photoreceptors. 
C) is due to inhibitory signals sent from photoreceptors to horizontal cells. 
A) is due to inhibitory signals sent from one photoreceptor to an adjacent photoreceptor. 
B) is due to inhibitory signals sent from horizontal cells to photoreceptors. 
C) is due to inhibitory signals sent from photoreceptors to horizontal cells.

Question 4

In order to establish a dark adaptation curve for cone photoreceptors,the test light that the par- ticipant adjusts would be

Accepted Answer

A) shown away from the fovea. 
B) shown directly on the fovea. 
C) shown to both the foveal and peripheral regions of the retina. 
A) shown away from the fovea. 
B) shown directly on the fovea. 
C) shown to both the foveal and peripheral regions of the retina.

Question 5

The focusing of light onto the surface of the retina is due to the lens and the

Accepted Answer

A) cornea. 
B) iris. 
C) pupil. 
A) cornea. 
B) iris. 
C) pupil.

Question 6

The pupillary reflex is a(n)

Accepted Answer

A) change in the opening of the iris in response to a change in light intensity. 
B) when the eye is automatically directed toward motion in the visual scene. 
C) adjustment in the thickness of the lens in response to a change in light intensity. 
A) change in the opening of the iris in response to a change in light intensity. 
B) when the eye is automatically directed toward motion in the visual scene. 
C) adjustment in the thickness of the lens in response to a change in light intensity.

Question 7

When 11-cis retinal absorbs light it changes into ,which results in a(n)in the amount of neurotransmitter released by the photoreceptor.

Accepted Answer

A) all-trans retinal;increase 
B) all-trans retinal;decrease 
C) 12-cis retinal;decrease 
A) all-trans retinal;increase 
B) all-trans retinal;decrease 
C) 12-cis retinal;decrease

Question 8

Which of the following disorders of vision can be treated with LASIK surgery?

Accepted Answer

A) astigmatism 
B) cataracts 
C) glaucoma 
A) astigmatism 
B) cataracts 
C) glaucoma

Question 9

Which retinal cells are capable of transduction?

Accepted Answer

A) photoreceptors 
B) bipolar cells 
C) horizontal cells 
A) photoreceptors 
B) bipolar cells 
C) horizontal cells

Question 10

A complex web of connections goes from the photoreceptors to the retinal ganglion cells (in- cluding amacrine cells,horizontal cells,and bipolar cells).What is gained by the visual system from all this processing,rather than simply propagating (or passing forward)the basic signal initially transmitted from each photoreceptor?

Accepted Answer

Each photoreceptor,by itself,can only in

Question 11

______________ results from the optic axis being too long and light being focused in front of the retina.

Accepted Answer

A) Myopia 
B) Hyperopia 
C) Amblyopia 
A) Myopia 
B) Hyperopia 
C) Amblyopia

Question 12

Why is it so difficult to see both (a)when you first enter a darkened theater from the sunlit street,and (b)when you step out to a sunlit street from a darkened theater?

Accepted Answer

Answers to this question should refer to

Question 13

______________ is characterized by a loss of vision in the area of the fovea,while results in the opposite (i.e. ,tunnel vision).

Accepted Answer

A) macular degeneration;retinitis pigmentosa 
B) cataracts;macular degeneration 
C) retinitis pigmentosa;macular degeneration 
A) macular degeneration;retinitis pigmentosa 
B) cataracts;macular degeneration 
C) retinitis pigmentosa;macular degeneration

Question 14

When the pupil ,it allows light into the eye.

Accepted Answer

A) constricts;more 
B) dilates;less 
C) constricts;less 
A) constricts;more 
B) dilates;less 
C) constricts;less

Question 15

Which of the following constitutes part of the retina's through pathway?

Accepted Answer

A) bipolar cells 
B) amacrine cells 
C) horizontal cells 
A) bipolar cells 
B) amacrine cells 
C) horizontal cells

Question 16

Light differs from other forms of electromagnetic radiation in that

Accepted Answer

A) light behaves like a wave. 
B) light is composed of a stream of particles. 
C) we can see it. 
A) light behaves like a wave. 
B) light is composed of a stream of particles. 
C) we can see it.

Question 17

The extraocular muscles

Accepted Answer

A) control eye movements. 
B) control the size of the pupil. 
C) control the shape of the lens. 
A) control eye movements. 
B) control the size of the pupil. 
C) control the shape of the lens.

Question 18

Highly convergent neural circuits are found

Accepted Answer

A) mostly in the fovea. 
B) mostly in the periphery of the retina. 
C) equally distributed in the fovea and the periphery. 
A) mostly in the fovea. 
B) mostly in the periphery of the retina. 
C) equally distributed in the fovea and the periphery.

Question 19

Starting at the center of fixation and working your way out to the visual periphery,describe the changes that occur in (a)visual acuity, (b)sensitivity to light,and (c)color discrimination.

Accepted Answer

Vision at fixation has the highest acuit

Question 20

When viewing an object at close distance,the lens becomes and the ciliary muscles are .

Accepted Answer

A) thinner;relaxed 
B) thinner;contracted 
C) thicker;relaxed 
A) thinner;relaxed 
B) thinner;contracted 
C) thicker;relaxed

Photopigment regeneration occurs during

The eyes of most prey animals are positioned

In a center-surround receptive field,lateral inhibition

In order to establish a dark adaptation curve for cone photoreceptors,the test light that the par- ticipant adjusts would be

The focusing of light onto the surface of the retina is due to the lens and the

The pupillary reflex is a(n)

When 11-cis retinal absorbs light it changes into ,which results in a(n)in the amount of neurotransmitter released by the photoreceptor.

Which of the following disorders of vision can be treated with LASIK surgery?

Which retinal cells are capable of transduction?

______________ results from the optic axis being too long and light being focused in front of the retina.

Why is it so difficult to see both (a)when you first enter a darkened theater from the sunlit street,and (b)when you step out to a sunlit street from a darkened theater?

______________ is characterized by a loss of vision in the area of the fovea,while results in the opposite (i.e. ,tunnel vision).

When the pupil ,it allows light into the eye.

Which of the following constitutes part of the retina's through pathway?

Light differs from other forms of electromagnetic radiation in that

The extraocular muscles

Highly convergent neural circuits are found

Starting at the center of fixation and working your way out to the visual periphery,describe the changes that occur in (a)visual acuity, (b)sensitivity to light,and (c)color discrimination.

When viewing an object at close distance,the lens becomes and the ciliary muscles are .

Foundations

The Visual Brain

Recognizing Visual Objects

Perceiving Color

Perceiving Depth

Perceiving Motion and Perception for Action

Attention and Awareness

Sound and the Ears

The Auditory Brain and Perceiving Auditory Scenes

Perceiving Speech and Music

The Body Senses

The Chemical Senses:

Filters

Exam 2: Light and the Eyes

Photopigment regeneration occurs during

The eyes of most prey animals are positioned

In a center-surround receptive field,lateral inhibition

In order to establish a dark adaptation curve for cone photoreceptors,the test light that the par- ticipant adjusts would be

The focusing of light onto the surface of the retina is due to the lens and the

The pupillary reflex is a(n)

When 11-cis retinal absorbs light it changes into ,which results in a(n)in the amount of neurotransmitter released by the photoreceptor.

Which of the following disorders of vision can be treated with LASIK surgery?

Which retinal cells are capable of transduction?

______________ results from the optic axis being too long and light being focused in front of the retina.

Why is it so difficult to see both (a)when you first enter a darkened theater from the sunlit street,and (b)when you step out to a sunlit street from a darkened theater?

______________ is characterized by a loss of vision in the area of the fovea,while results in the opposite (i.e. ,tunnel vision).

When the pupil ,it allows light into the eye.

Which of the following constitutes part of the retina's through pathway?

Light differs from other forms of electromagnetic radiation in that

The extraocular muscles

Highly convergent neural circuits are found

Starting at the center of fixation and working your way out to the visual periphery,describe the changes that occur in (a)visual acuity, (b)sensitivity to light,and (c)color discrimination.

When viewing an object at close distance,the lens becomes and the ciliary muscles are .

Foundations

The Visual Brain

Recognizing Visual Objects

Perceiving Color

Perceiving Depth

Perceiving Motion and Perception for Action

Attention and Awareness

Sound and the Ears

The Auditory Brain and Perceiving Auditory Scenes

Perceiving Speech and Music

The Body Senses

The Chemical Senses:

Filters