Lesson 5 Test

Question 1

The major distortion in the retinotopic layout of the primary visual cortex is the disproportionately

• low cortical representation of the fovea
• high cortical representation of movement
• low cortical representation of color
• high cortical representation of the fovea

Answer 1

High cortical representation of the fovea

Question 2

In humans, all of the visual receptors are in the

• first layer of the retina to be reached by light entering the eye.
• last layer of the retina to be reached by light entering the eye.
• Optic disk.
• cornea.

Answer 2

Last layer of the retina to be reached by light entering the eye.

Question 3

Damage to the ventral visual processing stream will likely result in

• object agnosia.
• an impairment of verbally describing the location of objects.
• simultagnosia.
• an impairment in reaching out and grasping objects.

Answer 3

Object agnosia.

Question 4

A peg-like, cytochrome-oxide-rich column of dual-opponent color cells in V1 is called

• an “on-off” color peg.
• a color field.
• a blob.

Answer 4

A blob.

Question 5

Why is the first step in visual processing to decompose the visual scene into lines and edges?

• light travels in lines.
• lines resolve binocular disparity.
• lines and edges define the boundaries of objects.

Answer 5

Lines and edges define the boundaries of objects.

Question 6

A point of light located in the upper left of the visual field is projected to what part of the retina?

• lower left.
• lower right.
• upper left.

Answer 6

Lower right.

Question 7

What information do we get from rods?

• motion.
• fine detail.
• color.

Answer 7

Motion.

Question 8

Why would prosopagnosia impair social interactions in particular?

• because it is an inability to identify object locations.
• because it is an inability to identify objects.
• because it is an inability to identify faces.
• because it is an inability to focus on more than one object at a time.

Answer 8

Because it is an inability to identify faces.

Question 9

When Jack gazes at a bear object, the Mende of his eye is

• thickened.
• stretched and thinned.
• concave.

Answer 9

Thickened.

Question 10

There are several cortical areas for vision, and each

• shows differential responses to different forms.
• is retinotopically organized.
• responds differently to hue.

Answer 10

Is retinotopically organized.