2-vision

Question 1

cornea

Answer 1

protective layer of your skin over your eyes, focuses light waves that enter the eye

Question 2

pupil

Answer 2

hole for light to enter

Question 3

iris

Answer 3

muscles that control how long or how small the pupil is

Question 4

lens

Answer 4

Curved, transparent structure that serves to provide additional focus, attached to muscles that change its shape to focus light better

Question 5

retina

Answer 5

lining of eye, has rod cells, see in low light

Question 6

Fovea

Answer 6

indentation in back of the eye, where the lens focusing, Part of the retina, has cone cells, see colours

Question 7

optic nerve

Answer 7

no rods, no cones, so brain fills it in (blind spot!); brings information from eye to the brain

Question 8

Rods

Answer 8

• located throughout the remainder of the retina
  
  • work well in low light conditions
  • Lack spatial resolution and colour function

Question 9

cones

Answer 9

located on fovea, sees colour

Question 10

retinal ganglion cells

Answer 10

interneurons that rods and cones are connected to, their axons exit through the back of the eye to form the optic nerve

Question 11

optic chiasm

Answer 11

• where the optic nerve from each eye merges just below the brain
  
  • X-shaped structure
  • Sits just below cerebral cortex

Question 12

Parallel pathways

Answer 12

the “what pathway” and the “where/how” pathway

Question 13

dorsal stream

Answer 13

WHERE is what I am loooking at?

Question 14

ventral stream

Answer 14

WHAT am I looking at?

Question 15

binocular cues

Answer 15

cues in a visual scene that rely the use of both eyes

Question 16

Binocular disparity

Answer 16

slightly different view of the world that each of our eyes receives

Question 17

Monocular clues

Answer 17

cues that require only one eye

Question 18

Linear perspective

Answer 18

when two parallel lines seem to converge

Question 19

Linear perspective

Answer 19

when two parallel lines seem to converge

Question 20

relative size

Answer 20

smaller things are, the more we perceive it to be further in the distance relative to other objects

Question 21

interposition

Answer 21

partial overlap of objects

Question 22

trichromatic theory of colour perception

Answer 22

all colours in the spectrum can be produced by combining red, green, and blue

• long wavelength→ red
• medium wavelength→ green
• short wavelength→ blue

Question 23

opponent process theory

Answer 23

we have these different opponents of colour combinations that fire and that when one gets overused its compensated by using a different colour

• negative afterimages!!

Question 24

Negative afterimages

Answer 24

continuation of a visual sensation after removal of the stimulus

Question 25

where do the two theories of seeing apply?

Answer 25

• Visual processing on the retina—trichromatic theory
• In the brain—cells respond in a way consistent with the opponent-process theory