Question 1

Spatial summation usually causes things to appear very sharp and clear.

Accepted Answer

A) True 
 B)False

Question 2

How does wavelength affect human perception?

Accepted Answer

The answer of How does wavelength affect human perception?...

Question 3

Frequency and wavelength are considered the inverse of each other.

Accepted Answer

A) True 
 B)False

Question 4

The Duplex theory of vision is the doctrine that there are functionally two distinct ways in which our eyes work, the photopic, associated with the cones, and the scotopic, associated with the rods.

Accepted Answer

A) True 
 B)False

Question 5

Zonule fibers and the ciliary muscles work to ______.

Accepted Answer

A) stretch the retina to be thin enough to allow light to pass through it 
B) ensure that the cornea is clear of materials, such as hair and other debris 
C) change the curvature of the lens, allowing accommodation 
D) adjust the amount of fluid in the posterior chamber

Question 6

Cataracts develop from an irregular shape of the cornea or lens.

Accepted Answer

A) True 
 B)False

Question 7

What is retinal?

Accepted Answer

A) a derivative of vitamin A 
B) a protein found in cones 
C) a wall dividing the lens and the retina 
D) a muscle attaching the retina to the lens

Question 8

The optic disk is the area in which human sensitivity to light is the highest.

Accepted Answer

A) True 
 B)False

Question 9

What is spatial summation?

Accepted Answer

A) the ability to pool light across different regions of space 
B) the ability to resolve light to particular locations in the visual world 
C) the process of adapting sensitivity to match visual conditions 
D) the process of adapting focus based on physical distance

Question 10

What is the goal of lateral inhibition?

Accepted Answer

A) mediating on-center surround cells 
B) facilitating edge detection 
C) overriding illusory processes 
D) integrating figure and ground

Question 11

Rocio enjoys star-gazing.When using a flashlight to look at her star chart on a dark but clear light, she should use a flashlight with ______.

Accepted Answer

A) red light because red light least interferes with scotopic vision 
B) blue light because blue light has higher reflectance values 
C) a broad range of wavelengths to compensate for the low ambient light level 
D) green light, as green closely corresponds to the wavelengths emitted by stars

Question 12

The colored part of the eye, really a muscle that controls the amount of light entering through the pupil, is known as the ______.

Accepted Answer

A) iris 
B) pupil 
C) sclera 
D) cornea

Question 13

Explain the physiological mechanism that creates center-surround receptive fields by explaining what happens when you look at a book that is sitting on top of a desk.

Accepted Answer

The answer of Explain the physiological mechanism that creates center-surround...

Question 14

This visual abnormality results from the clouding of the lens.It affects older adults more than younger adults but can occur in anyone at any age.What is it?

Accepted Answer

A) macular degeneration 
B) presbyopia 
C) cataracts 
D) corneal contusions

Question 15

What is a receptive field?

Accepted Answer

A) the range of wavelengths that a particular sensory neuron responds to 
B) the area in the visual world that a particular sensory neuron responds to 
C) the range of intensities that a particular sensory neuron responds to 
D) the range of speeds at which a particularly sensory neuron reacts

Question 16

Lucy is an 85-year-old woman with the following symptoms.She has tunnel vision in which she can see only in a small area in the middle of the visual field.She can read, but has difficulty seeing objects approach from the side.Your diagnosis?

Accepted Answer

A) retinitis pigmentosa 
B) cataracts 
C) macular degeneration 
D) astigmatism

Question 17

The doctrine that there are functionally two distinct ways in which our eyes work, the photopic, associated with the cones, and the scotopic, associated with the rods, is known as the ______ theory of vision.

Accepted Answer

A) Young-Helmholtz 
B) duplex 
C) inverse 
D) retinal-macular

Question 18

Animals such as antelope that have eyes on the sides of their head have the advantage of a ______.

Accepted Answer

A) wider field of view 
B) better binocular vision 
C) better depth perception 
D) great perception of detail

Question 19

Describe what happens inside your eye as you walk out of a dark movie theater on a sunny day.

Accepted Answer

The answer of Describe what happens inside your eye as...

Question 20

The wavelength distribution of visible light is ______.

Accepted Answer

A) 100-850 nm 
B) 400-700 nm 
C) 50-2500 nm 
D) 20-20,000 nm

Exam 3: Visual System: The Eye

Spatial summation usually causes things to appear very sharp and clear.

How does wavelength affect human perception?

Frequency and wavelength are considered the inverse of each other.

The Duplex theory of vision is the doctrine that there are functionally two distinct ways in which our eyes work, the photopic, associated with the cones, and the scotopic, associated with the rods.

Zonule fibers and the ciliary muscles work to ______.

Cataracts develop from an irregular shape of the cornea or lens.

What is retinal?

The optic disk is the area in which human sensitivity to light is the highest.

What is spatial summation?

What is the goal of lateral inhibition?

Rocio enjoys star-gazing.When using a flashlight to look at her star chart on a dark but clear light, she should use a flashlight with ______.

The colored part of the eye, really a muscle that controls the amount of light entering through the pupil, is known as the ______.

Explain the physiological mechanism that creates center-surround receptive fields by explaining what happens when you look at a book that is sitting on top of a desk.

This visual abnormality results from the clouding of the lens.It affects older adults more than younger adults but can occur in anyone at any age.What is it?

What is a receptive field?

Lucy is an 85-year-old woman with the following symptoms.She has tunnel vision in which she can see only in a small area in the middle of the visual field.She can read, but has difficulty seeing objects approach from the side.Your diagnosis?

The doctrine that there are functionally two distinct ways in which our eyes work, the photopic, associated with the cones, and the scotopic, associated with the rods, is known as the ______ theory of vision.

Animals such as antelope that have eyes on the sides of their head have the advantage of a ______.

Describe what happens inside your eye as you walk out of a dark movie theater on a sunny day.

The wavelength distribution of visible light is ______.