Question 1

Describe the dorsal and ventral streams. Describe two theories of their functional difference and the evidence on which each theory is based.

Accepted Answer

20% for describing dorsal and ventral st...

Question 2

Prosopagnosics

Accepted Answer

A)   can usually recognize a face as a face.
B)   have difficulty telling one face from another.
C)   report seeing faces as a jumble of individual parts, rather than as a unitary whole.
D)   all of the above
E)   both A and BF) C) and E)
G) A) and B)

Question 3

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) None of the above
G) C) and D)

Question 4

Neurons with receptive fields in the fovea

Accepted Answer

A)   are all on-center cells.
B)   are all off-center cells.
C)   have particularly small receptive fields.
D)   are all rods.
E)   are all bipolar.F) A) and C)
G) B) and E)

Question 5

The perception of an edge is in effect the perception of a

Accepted Answer

A)   line.
B)   line separating two adjacent areas of the visual field.
C)   contour.
D)   contrast between two adjacent areas of the visual field.
E)   line between two adjacent areas of the retina.F) C) and D)
G) B) and C)

Question 6

Scotomas are located by

Accepted Answer

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

Question 7

Prior to migraine attacks, sufferers often experience

Accepted Answer

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

Question 8

The parvocellular layers of the lateral geniculate nuclei get their name from the fact that the neurons in these layers are

Accepted Answer

A)   multipolar.
B)   small.
C)   monopolar.
D)   large.
E)   parvo-like.F) B) and D)
G) D) and E)

Question 9

There are more rods

Accepted Answer

A)   at the center of the fovea than there are 20° from the center.
B)   in the nasal hemiretina than in the temporal hemiretina.
C)   in the temporal hemiretina than in the nasal hemiretina.
D)   both A and B
E)   both A and CF) B) and D)
G) A) and D)

Question 10

In humans, the axons of retinal ganglion cells whose cell bodies are in the left temporal hemiretina

Accepted Answer

A)   project contralaterally.
B)   project ipsilaterally.
C)   terminate in the right lateral geniculate nucleus.
D)   terminate in the right striate cortex.
E)   both A and CF) A) and C)
G) All of the above

Question 11

The bleaching of rhodopsin by light

Accepted Answer

A)   hyperpolarizes rods.
B)   depolarizes rods.
C)   depolarizes cones.
D)   opens sodium channels.
E)   opens potassium channels.F) A) and B)
G) B) and E)

Question 12

Nonexistent stripes of lightness and darkness that accentuate the perception of edges are often called

Accepted Answer

A)   lateral inhibitions.
B)   lateral plexuses.
C)   ommatidia.
D)   hallucinations.
E)   Mach bands.F) A) and B)
G) A) and C)

Question 13

Light passes through layers of the retina in which of the following sequences?

Accepted Answer

A)   receptor layer, bipolar cell layer, retinal ganglion cell layer
B)   retinal ganglion cell layer, horizontal cell layer, receptor layer
C)   retinal ganglion cell layer, amacrine cell layer, receptor layer
D)   both B and C
E)   none of the aboveF) C) and E)
G) A) and D)

Question 14

In contrast to the "where" vs. "what" theory, Goodale and Milner have argued that the respective functions of the dorsal and ventral streams are

Accepted Answer

A)   "what" vs. "where."
B)   "conscious perception" vs. "control of behavior."
C)   "control of behavior" vs. "conscious perception."
D)   both A and B
E)   both A and CF) None of the above
G) A) and D)

Question 15

The absorption spectrum of rhodopsin closely corresponds to the

Accepted Answer

A)   scotopic spectral sensitivity curve.
B)   colors of the rainbow.
C)   absorption spectrum of cones.
D)   photopic vision of humans.
E)   photopic vision of fish.F) C) and E)
G) A) and D)

Question 16

The color and brightness of large unpatterned surfaces are not directly perceived; they are filled in or completed by a process called

Accepted Answer

A)   edge extrapolation.
B)   area extrapolation.
C)   surface interpolation.
D)   accommodation.
E)   binocular rivalry.F) A) and C)
G) A) and D)

Question 17

The brightness of a light depends on its

Accepted Answer

A)   intensity.
B)   wavelength.
C)   color.
D)   both A and B
E)   both A and CF) C) and E)
G) D) and E)

Question 18

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) C) and D)
G) B) and E)

Question 19

According to one theory, the __________ stream controls behavior in the absence of conscious awareness.

Accepted Answer

The answer of According to one theory, the __________ stream...

Question 20

Current evidence suggests that some cases of blindsight may be mediated by

Accepted Answer

A)   surviving islands of primary visual cortex.
B)   ascending pathways to secondary visual cortex that do not involve primary visual cortex.
C)   subjective contours.
D)   both A and B
E)   both B and CF) A) and B)
G) A) and C)

Exam 6: The Visual System

In humans, the axons of retinal ganglion cells whose cell bodies are in the left temporal hemiretina

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According to one theory, the __________ stream controls behavior in the absence of conscious awareness.

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The color and brightness of large unpatterned surfaces are not directly perceived; they are filled in or completed by a process called

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Describe the dorsal and ventral streams. Describe two theories of their functional difference and the evidence on which each theory is based.

Correct Answerverified20% for describing dorsal and ventral st...View AnswerShow Answer

With respect to vision, wavelength is to intensity as

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The parvocellular layers of the lateral geniculate nuclei get their name from the fact that the neurons in these layers are

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Prior to migraine attacks, sufferers often experience

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In contrast to the "where" vs. "what" theory, Goodale and Milner have argued that the respective functions of the dorsal and ventral streams are

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Neurons with receptive fields in the fovea

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The bleaching of rhodopsin by light

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Current evidence suggests that some cases of blindsight may be mediated by

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The absorption spectrum of rhodopsin closely corresponds to the

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Prosopagnosics

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Light passes through layers of the retina in which of the following sequences?

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Scotomas are located by

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Nonexistent stripes of lightness and darkness that accentuate the perception of edges are often called

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Most lateral geniculate neurons terminate in

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There are more rods

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The perception of an edge is in effect the perception of a

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The brightness of a light depends on its

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