Neural Processing

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Question 1
Free
Multiple Choice

 Hartline et al. (1956) selected the Limulus to demonstrate lateral inhibition because _____ .

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A

it was possible to illuminate a single receptor without illuminating its adjacent receptor

B

it was readily available to him and was extremely easy to breed in the lab

C

the Limulus eye contained more cones than rods

D

the Limulus has excellent color vision

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Question 2
Free
Multiple Choice

 A receptor array in the Limulus is connected by the lateral plexus. Receptor "A" is located 5 receptors to the left of Receptor "B." What stimulation will result in the greatest firing rate recorded from "A"

Choose correct answer/s
A

stimulate A with 10 units of illumination

B

stimulate A with 10 units of illumination and stimulate B with 10 units

C

stimulate A with 10 units of illumination and stimulate B with 20 units

D

stimulate A with 5 units of illumination and stimulate B with 20 units

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Question 3
Free
Multiple Choice

 _________ : Limulus :: ________ : human retina.

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A

Horizontal cells; amacrine cells

B

Amacrine cells; horizontal cells

C

Lateral plexus; horizontal and amacrine cells

D

Lateral plexus; rods

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Question 4
Free
Multiple Choice

 Human lateral inhibition is most likely accomplished by _____ .

Choose correct answer/s
A

end-stopped cells

B

extrastriate cells

C

bipolar cells

D

dissociative cells

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Question 5
Free
Multiple Choice

 Lateral inhibition has previously been used to explain _____ .

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A

the Hermann Grid only

B

Mach bands and the Hermann Grid, but not the Chevreul illusion

C

Chevreul illusion only

D

the Hermann Grid and Mach bands, and the Chevreul illusion

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Question 6
Multiple Choice

 The gray intersections in the Hermann Grid _____ .

Choose correct answer/s
A
are physically present
B
are explained by dark adaptation
C
support the claim that "perception is not the same as the physical stimulus"
D
support the claim that what is learned in animals is not applicable to humans
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Question 7
Multiple Choice

 In Hermann's grid, a possible explanation for why gray areas appear at the intersections is because _____ .

Choose correct answer/s
A
the amount of inhibition right at the intersections is twice as great as the inhibition between each square
B
the amount of inhibition right at the intersections is much less than the inhibition between each square
C
the superior colliculus responds maximally as you move your eye from intersection to intersection
D
moving the eye creates a blur at all the intersections
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Question 8
Multiple Choice

 In Mach bands, the darker area sends _____ lateral inhibition to the lighter area than the lighter area sends to the darker area.

Choose correct answer/s
A
less
B
more
C
the same amount of
D
no
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Question 9
Multiple Choice

 You can create a version of the _____ by illuminating a light-colored surface with a desk lamp and casting a shadow with a piece of paper.

Choose correct answer/s
A
Hermann Grid
B
Mach bands
C
Benary Cross
D
illusory square
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Question 10
Multiple Choice

 When _____ , lateral inhibition can no longer account for the Hermann Grid.

Choose correct answer/s
A
the lines are made curvy
B
illumination is increased
C
illumination is decreased
D
the number of squares is increased
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Question 11
Multiple Choice

 The inability of lateral inhibition to account for more complex effects shows how _____ .

Choose correct answer/s
A
physiological explanations may need to be modified by perceptual results
B
physiological explanations rarely hold across species
C
perceptual explanations are typically consistent across species
D
what we learn from animals is rarely applicable to humans
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Question 12
Multiple Choice

 The inability of lateral inhibition to explain some perceptual effects suggests that some contrast effects are based in _____ .

Choose correct answer/s
A
the retina.
B
the cortex
C
the lateral plexus
D
the macula
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Question 13
Multiple Choice

 The area on the retina that influences the firing rate of the neuron is called the _____ .

Choose correct answer/s
A
receptive field
B
amacrine region
C
divergence area
D
inverted fovea
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Question 14
Multiple Choice

 A neuron with an excitatory center-inhibitory surround receptive field will respond most when we stimulate _____ .

Choose correct answer/s
A
only the center
B
only the surround
C
both the center and surround together
D
part of the surround
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Question 15
Multiple Choice

 Most of the signals travel from the retina to the _____ via the optic nerve.

Choose correct answer/s
A
temporal cortex
B
lateral geniculate nucleus
C
the superior colliculus
D
the visual homunculus
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Question 16
Multiple Choice

 Chad is reading when he sees an insect land on the corner of his book. He then makes an eye movement to look at the insect. The structure of the visual system that is most likely responsible for making this eye movement is the _____ .

Choose correct answer/s
A
superior colliculus
B
extrastriate cortex
C
optic chiasm
D
parietal cortex
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Question 17
Multiple Choice

 Neurons in the LGN have _____ receptive fields.

Choose correct answer/s
A
center-surround
B
side-by-side columnar
C
ill-defined
D
ambiguous
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Question 18
Multiple Choice

 The flow of information in the LGN is best described as _____ .

Choose correct answer/s
A
unidirectional, with signals going from the retina to the LGN
B
unidirectional, with signals going from the LGN to the retina
C
unidirectional, with signals going from the LGN to the cortex
D
signals coming from the retina and the cortex to the LGN
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Question 19
Multiple Choice

 The flow of information to the _____ from the _____ is greater than from the _____ .

Choose correct answer/s
A
cortex; LGN; retina
B
LGN; retina; cortex
C
retina; LGN; cortex
D
LGN; cortex; retina
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Question 20
Multiple Choice

 The Nobel Prize winners who conducted the pioneering research on the physiology of striate cortex neurons were _____ .

Choose correct answer/s
A
White and Benary
B
Hubel and Wiesel
C
Mathers and Marshall
D
Libby and Rizzutto
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