Question 1

Seeing in dim light is referred to as

Accepted Answer

A)  scotopic vision. 
B)  photopic vision. 
C)  duplex vision. 
D)  none of these 
A)  scotopic vision. 
B)  photopic vision. 
C)  duplex vision. 
D)  none of these A

Question 2

If you had in each eye only one ganglion cell on which all photoreceptors converged, your eye would show

Accepted Answer

A)  high resolution. 
B)  high sensitivity. 
C)  robust lateral inhibition. 
D)  a pronounced Purkinje shift. 
A)  high resolution. 
B)  high sensitivity. 
C)  robust lateral inhibition. 
D)  a pronounced Purkinje shift. B

Question 3

Stimulation of the ON portion of a ganglion cell's receptive field results in a/an ______ in the neural activity of that cell.

Accepted Answer

A)  decrease 
B)  increase 
C)  depends on whether the ON portion is in the center or surround 
D)  cannot be determined based on the information presented 
A)  decrease 
B)  increase 
C)  depends on whether the ON portion is in the center or surround 
D)  cannot be determined based on the information presented B

Question 4

Increasing the number of receptors that contribute input to a retinal ganglion cell is known as

Accepted Answer

A)  temporal summation. 
B)  duplex solution. 
C)  spatial summation. 
D)  none of these 
A)  temporal summation. 
B)  duplex solution. 
C)  spatial summation. 
D)  none of these

Question 5

What is lightness constancy, and why is it important?

Accepted Answer

Lightness constancy refers to our abilit

Question 6

The ratio of the number of receptors to the number of ganglion cells is referred to as

Accepted Answer

A)  visual acuity. 
B)  sensitivity. 
C)  convergence. 
D)  none of these 
A)  visual acuity. 
B)  sensitivity. 
C)  convergence. 
D)  none of these

Question 7

Which one of the following is NOT a trait of M cells?

Accepted Answer

A)  larger than P cells 
B)  more frequent than P cells 
C)  larger receptive fields than P cells 
D)  respond well to small differences in light levels in center and surround 
A)  larger than P cells 
B)  more frequent than P cells 
C)  larger receptive fields than P cells 
D)  respond well to small differences in light levels in center and surround

Question 8

Bars of light that vary in lightness and yet are invariant in intensity are referred to as

Accepted Answer

A)  Mach bands. 
B)  lightness constancy. 
C)  lightness contrast. 
D)  none of these 
A)  Mach bands. 
B)  lightness constancy. 
C)  lightness contrast. 
D)  none of these

Question 9

Within certain limits, all stimuli having the same product of intensity and area will be equally detectable. This principle is called

Accepted Answer

A)  temporal summation. 
B)  spatial summation. 
C)  Bloch's law. 
D)  Ricco's law. 
A)  temporal summation. 
B)  spatial summation. 
C)  Bloch's law. 
D)  Ricco's law.

Question 10

The amount of light that is reflected by a typical piece of white paper is what percentage of the light that strikes the paper?

Accepted Answer

A)  10% 
B)  30% 
C)  50% 
D)  80% 
A)  10% 
B)  30% 
C)  50% 
D)  80%

Question 11

The most common arrangement for the receptive fields of retinal ganglion cells is

Accepted Answer

A)  two vertically adjacent rectangular areas. 
B)  two concentric circles. 
C)  two horizontally adjacent squares. 
D)  diagonally aligned squares. 
A)  two vertically adjacent rectangular areas. 
B)  two concentric circles. 
C)  two horizontally adjacent squares. 
D)  diagonally aligned squares.

Question 12

To get maximally effective reading light for your money, you should use bulbs that emit light at wavelengths of _____ nanometers.

Accepted Answer

A)  200 
B)  400 
C)  550 
D)  650 
A)  200 
B)  400 
C)  550 
D)  650

Question 13

Which area of the retina has the highest spatial resolution?

Accepted Answer

A)  periphery 
B)  fovea 
C)  choroid 
D)  optic disk 
A)  periphery 
B)  fovea 
C)  choroid 
D)  optic disk

Question 14

Night blindness can result from

Accepted Answer

A)  cone impairment. 
B)  vitamin C deficiency. 
C)  vitamin A deficiency. 
D)  too much retinal convergence. 
A)  cone impairment. 
B)  vitamin C deficiency. 
C)  vitamin A deficiency. 
D)  too much retinal convergence.

Question 15

Which of the following factors influence(s) visual acuity?

Accepted Answer

A)  spacing of cones 
B)  level of illumination 
C)  spacing between adjacent stimuli 
D)  all of these 
A)  spacing of cones 
B)  level of illumination 
C)  spacing between adjacent stimuli 
D)  all of these

Question 16

What is a receptive field, and how is it measured?

Accepted Answer

A receptive field refers to the specific

Question 17

A snowball normally looks white no matter how much total light it is reflecting. This is because of

Accepted Answer

A)  the luminosity of snow. 
B)  lightness constancy. 
C)  light convergence. 
D)  brightness fixation. 
A)  the luminosity of snow. 
B)  lightness constancy. 
C)  light convergence. 
D)  brightness fixation.

Question 18

If your perception of lightness is constant despite changes in the amount of light hitting the eye, this is known as

Accepted Answer

A)  constant response. 
B)  fixed intensity. 
C)  lightness contrast. 
D)  lightness constancy. 
A)  constant response. 
B)  fixed intensity. 
C)  lightness contrast. 
D)  lightness constancy.

Question 19

Seeing during daylight is referred to as

Accepted Answer

A)  scotopic vision. 
B)  photopic vision. 
C)  duplex vision. 
D)  none of these 
A)  scotopic vision. 
B)  photopic vision. 
C)  duplex vision. 
D)  none of these

Question 20

In which of the following ways do M and P retinal ganglion cells differ?

Accepted Answer

A)  receptive field size 
B)  relative numbers 
C)  conduction speed 
D)  all of these 
A)  receptive field size 
B)  relative numbers 
C)  conduction speed 
D)  all of these

Seeing in dim light is referred to as

If you had in each eye only one ganglion cell on which all photoreceptors converged, your eye would show

Stimulation of the ON portion of a ganglion cell's receptive field results in a/an ______ in the neural activity of that cell.

Increasing the number of receptors that contribute input to a retinal ganglion cell is known as

What is lightness constancy, and why is it important?

The ratio of the number of receptors to the number of ganglion cells is referred to as

Which one of the following is NOT a trait of M cells?

Bars of light that vary in lightness and yet are invariant in intensity are referred to as

Within certain limits, all stimuli having the same product of intensity and area will be equally detectable. This principle is called

The amount of light that is reflected by a typical piece of white paper is what percentage of the light that strikes the paper?

The most common arrangement for the receptive fields of retinal ganglion cells is

To get maximally effective reading light for your money, you should use bulbs that emit light at wavelengths of _____ nanometers.

Which area of the retina has the highest spatial resolution?

Night blindness can result from

Which of the following factors influence(s) visual acuity?

What is a receptive field, and how is it measured?

A snowball normally looks white no matter how much total light it is reflecting. This is because of

If your perception of lightness is constant despite changes in the amount of light hitting the eye, this is known as

Seeing during daylight is referred to as

In which of the following ways do M and P retinal ganglion cells differ?

Introduction to Perception

The Human Eye

Central Visual Pathways

Spatial Vision and Patten Perception

Object Perception: Recognizing the Things We See

Color Perception

Seeing a Three-Dimensional World

Action and the Perception of Events

The Ear and Auditory System

Hearing and Listening

Speech and Music Perception

Touch

Chemical Senses L: Smell

Chemical Senses Ll: Taste

Filters

Exam 3: The Eye and Seeing

Seeing in dim light is referred to as

If you had in each eye only one ganglion cell on which all photoreceptors converged, your eye would show

Stimulation of the ON portion of a ganglion cell's receptive field results in a/an ______ in the neural activity of that cell.

Increasing the number of receptors that contribute input to a retinal ganglion cell is known as

What is lightness constancy, and why is it important?

The ratio of the number of receptors to the number of ganglion cells is referred to as

Which one of the following is NOT a trait of M cells?

Bars of light that vary in lightness and yet are invariant in intensity are referred to as

Within certain limits, all stimuli having the same product of intensity and area will be equally detectable. This principle is called

The amount of light that is reflected by a typical piece of white paper is what percentage of the light that strikes the paper?

The most common arrangement for the receptive fields of retinal ganglion cells is

To get maximally effective reading light for your money, you should use bulbs that emit light at wavelengths of _____ nanometers.

Which area of the retina has the highest spatial resolution?

Night blindness can result from

Which of the following factors influence(s) visual acuity?

What is a receptive field, and how is it measured?

A snowball normally looks white no matter how much total light it is reflecting. This is because of

If your perception of lightness is constant despite changes in the amount of light hitting the eye, this is known as

Seeing during daylight is referred to as

In which of the following ways do M and P retinal ganglion cells differ?

Introduction to Perception

The Human Eye

Central Visual Pathways

Spatial Vision and Patten Perception

Object Perception: Recognizing the Things We See

Color Perception

Seeing a Three-Dimensional World

Action and the Perception of Events

The Ear and Auditory System

Hearing and Listening

Speech and Music Perception

Touch

Chemical Senses L: Smell

Chemical Senses Ll: Taste

Filters