8.4 -- PART 1/2

Question 1

What are binocular depth cues?

Answer 1

Depth cues that require the use of both eyes for our brain to gathering information about distance and depth

Question 2

List the processes of the eye receiving information

Answer 2

Reception, transduction, transmition, interpretation

Question 3

What are monocular depth cues?

Answer 3

require the use of only one eye to provide information to the brain about depth and distance, but they also operate with both eyes. Monocular cues that are classified as pictorial cues include linear perspective, interposition, texture gradient, relative size and height in the visual field.

Question 4

What is convergence?

Answer 4

involves the brain detecting and interpreting depth or distance from changes in tension in the eye muscles that occur when the two eyes turn inwards to focus on objects that are close. The brain interprets greater tension in the eye muscles as an object gets closer and less tension as an object gets further away.

Question 5

What is retinal disparity?

Answer 5

The very slight difference in the location of the images on the retinas (due to the different positions of our eyes), which enables us to make judgments about the depth or distance of an object.

Question 6

What is accommodation in this context?

Answer 6

The automatic adjustment of the shape of the lens to focus an object in response to changes in how far away the object is

Question 7

What is linear perspective?

Answer 7

The apparent “meeting” of actual or imagined parallel lines as they recede into the distance.

Question 8

What is interposition?

Answer 8

also called overlap, occurs when one object partially blocks or covers another, and the partially blocked object is perceived as further away than the object that obscures it (and vice versa).

Question 9

What is texture gradient?

Answer 9

refers to the gradual reduction of the detail that occurs in an object or surface as it recedes into the distance, compared with an object or surface that is close and perceived in fine detail

Question 10

What is relative size?

Answer 10

refers to the tendency to visually perceive the object that produces the largest image on the retina as being closer, and the object that produces the smallest image on the retina as being further away.

Question 11

What is “height in visual field”?

Answer 11

objects that are located closer to the horizon are perceived as being more distant than objects located further from the horizon.