Quiz 2

Question 1

Light is bent by the lens and enters the eye through the

Answer 1

Pupil

Question 2

Projected on to the

Answer 2

Retina (visual receptors)

Question 3

From receptors to

Answer 3

Bipolar cells

Question 4

Bipolar cells to

Answer 4

Ganglion cells

Question 5

Ganglion cells to the

Answer 5

Optic nerve

Question 6

Cornea’s purpose:

Answer 6

Protect the eye and maintains its shape

Question 7

Fovea (center of the macula)

Answer 7

Area specialized for acute, detailed vision (1:1:1 ratio bipolar cell to ganglion cell)

Question 8

Midget ganglion cells

Answer 8

Respond to a single cell

Question 9

Rods (periphery)

Answer 9

Respond to faint light

Question 10

Cones (in/near the fovea)

Answer 10

Bright light and color vision

Question 11

Law of specific nerve energies

Answer 11

Whatever excites a nerve always sends the same kind of information to the brain

Question 12

Photopigments (in rods and cones)

Answer 12

Chemicals that release energy when struck by light

Question 13

Humans have two visual systems

Answer 13

Parvocellular

Magnocellular

Question 14

Parvocellular (cones)

Answer 14

Detail, good light, color
Smaller cell bodies and small receptive fields
Connect only to the lateral geniculate nucleus of the thalamus

Question 15

Magnocellular

Answer 15

Motion, peripheral vision, moving objects
Located evenly throughout the retina
Mostly connect to the lateral geniculate nucleus of the thalamus

Question 16

Koniocellular

Answer 16

Small cell bodies

Found throughout the nucleus AND the superior colliculus

Question 17

Organization of the occipital cortex

Answer 17

V1 (like a bullseye on a target)
V2
V3
V4 (ventral to the inferior temporal cortex) and MT(V5) (dorsal to the posterior parietal cortex)

Question 18

Damage to the V1:

Answer 18

Cortical blindness: aware of some of their surroundings

Question 19

Damage to the V5/MT

Answer 19

Motion blindness: can’t see things that are in motion