Question 1

Depth cues that require only one eye are known as __________depth cues.

Accepted Answer

Monocular depth cues are visual information that can be perceived with just one eye, allowing for the perception of depth and distance.

Question 2

When you estimate a distance under 50 feet, such as when you play catch or shoot trash can hoops with the first draft of your essay, you are using

Accepted Answer

The answer of When you estimate a distance under 50...

Question 3

As you are walking to the corner or driving your car around town, you are probably not aware that the muscles attached to your eyeballs are feeding information on eye position to your brain to help you judge distances under 50 feet. This describes the binocular depth cue known as

Accepted Answer

Convergence refers to the binocular depth cue that involves the inward turning of our eyes that is required to focus on objects that are less than 50 feet away. This muscle movement provides the brain with information on the object's distance.

Question 4

You look through an old photographic slide-viewer toy, which creates the impression of seeing a three-dimensional scene by one photograph of the scene being displayed to one eye and a slightly different view of this scene being presented to the other eye. When these two images are fused into one overall image, which of the following occurs?

Accepted Answer

Stereoscopic vision occurs when two slightly different images of the same scene are presented to each eye, creating the illusion of depth and three-dimensional perception. This is the principle behind the old photographic slide-viewer toy.

Question 5

The chief cues for depth perception utilized by producers of 3-D movies are those that involve the moviegoers being presented with two slightly differing views of the scenes, which simulates

Accepted Answer

3-D movies create depth perception by presenting two slightly different images to each eye, simulating retinal disparity, which is the way our eyes perceive depth in the real world by each eye viewing objects from slightly different angles.

Question 6

If you focus on your fingertip and bring it toward your eyes until they almost cross, you will actually feel the muscles that control eye movement working harder as your fingertip gets closer through a process known as

Accepted Answer

Convergence is the process where the eye muscles adjust to maintain focus on an object as it moves closer or farther away. This involves the eyes moving toward each other (converging) as objects come closer, which is why you feel the muscles working harder.

Question 7

The ability to identify the direction from which a sound originates is strongly dependent on having two ears separated in space by several inches. The ability to perceive visual depth is related to a similar property known as

Accepted Answer

Retinal disparity refers to the slight difference in the images perceived by each eye due to their different positions on the face. This difference is crucial for depth perception, similar to how having two ears allows for the localization of sound sources.

Question 8

Even if you only have one eye, you would still be able to drive a car or ride a bicycle. The ability to still engage in tasks that require depth perception shows that

Accepted Answer

The answer of Even if you only have one eye,...

Question 9

Regarding accommodation, which of the following statements is FALSE?

Accepted Answer

Accommodation is a depth cue that is effective only at short distances, typically within a few feet. It is not useful for tasks requiring depth perception at longer distances, such as driving a car or catching a ball, where binocular cues and other monocular cues like motion parallax and perspective are more important.

Question 10

The monocular depth cue that involves the bending of the lens to focus on nearby objects is called

Accepted Answer

Accommodation is the process by which the eye's lens changes shape to focus near or far objects on the retina. This is a monocular depth cue because it involves a change in the shape of the lens of a single eye to focus on objects at different distances.

Question 11

Chris lost the vision in his left eye in an accident. Regarding driving and depth perception, which of the following statements is FALSE?

Accepted Answer

Depth perception is not solely dependent on having two functioning eyes; individuals with vision in only one eye can still perceive depth using monocular cues. Thus, losing vision in one eye does not make driving or perceiving depth impossible.

Question 12

The perception of space and depth caused chiefly by the fact that the eyes receive different images is known as

Accepted Answer

Stereoscopic vision refers to the perception of depth and three-dimensional structure obtained on the basis of visual information deriving from two eyes by individuals with normally developed binocular vision. This is because each eye captures a slightly different image, and the brain processes these differences to perceive depth.

Question 13

Convergence and retinal disparity are similar in that both are

Accepted Answer

Convergence and retinal disparity are both binocular cues because they rely on the use of both eyes to perceive depth and distance. Convergence involves the inward movement of the eyes when focusing on close objects, while retinal disparity refers to the slight difference in the images projected on each retina, which the brain uses to gauge depth.

Question 14

Because of the difference in the images that reach each eye, we receive two slightly different views of the world. This phenomenon is the most basic source of depth perception and is known as

Accepted Answer

Retinal disparity refers to the slight difference in the images perceived by each eye due to their different positions on the face. This difference is crucial for depth perception, allowing us to perceive the world in three dimensions.

Question 15

The batter has just hit a high fly ball to center field where you are standing. As the ball spirals down, you are able to focus on this object and judge distances because of

Accepted Answer

Convergence is the binocular cue that helps in judging distances by the inward angle of the eyes when focusing on a nearby object, such as a ball coming towards you.

Question 16

Which binocular cue is controlled by the muscles attached to one's eyeballs and allows one to estimate distance under 50 feet?

Accepted Answer

Convergence is the binocular cue that involves the inward turning of the eyes to focus on objects closer than about 50 feet. This cue is controlled by the muscles attached to the eyeballs, allowing individuals to estimate the distance of nearby objects.

Question 17

Which of the following is a binocular cue and is based on the fact that the eyes are about 2.5 inches apart?

Accepted Answer

Retinal disparity is a binocular cue that arises because each eye views a slightly different angle of an object due to the 2.5-inch separation between the eyes.

Question 18

When you thread a needle, which of the following depth cues would be most important to you?

Accepted Answer

Accommodation is the depth cue most important when threading a needle, as it involves the eye's lens changing shape to focus on objects at different distances, crucial for such close-up tasks.

Question 19

In judging distances within four feet of the eyes, we rely on changes in the sensations of the muscles attached to each lens, a process known as

Accepted Answer

Accommodation refers to the process by which the eye's lens changes shape to focus near or far objects on the retina, including the sensation changes in the muscles that control the lens for focusing on objects within close range.

Question 20

When two images are fused into one overall image, a three-dimensional sight occurs, which is referred to as

Accepted Answer

Stereoscopic vision refers to the process by which the brain combines two slightly different images received from each eye into a single three-dimensional image. This is what gives depth perception and the sense of three-dimensionality.

Quiz 4: Sensation and Perception