Ch. 4.2 - Visual Pathways to the Brain

Question 1

optic chiasm

Answer 1

crossover point for the optic nerve at the midpoint of the brain

Question 2

lateral geniculate nucleus

Answer 2

region within thalamus that directs visual info throughout the brain

Question 3

feature detection cells

Answer 3

neurons that respond selectively based on specific aspects of a stimulus (ex: angles and edges) as well as to specific regions of the visual field

Question 4

ventral stream (4)

Answer 4

• extends from visual cortex to the temporal lobe
• responsible for object and face recognition
• pareidolia and prosopagnosia
• fusiform face area (FFA)

Question 5

greeble experiment

Answer 5

fusiform face area responsible visual expertise

Question 6

perceptual constancy

Answer 6

ability to perceive objects as having constant shape, size, and colour despite changes in perspective

Question 7

size constancy (2)

Answer 7

• relies on other depth cues to make perceptual corrections to the retinal images
• rely on contextual depth cues to achieve deception

Question 8

lightness constancy

Answer 8

maintain perception under uneven illumination

Question 9

dorsal stream (2)

Answer 9

• extends from visual cortex to the parietal lobe

- responsible for depth and motion perception

Question 10

binocular depth cues

Answer 10

distance cues that are based on the differing perception of both eyes

Question 11

convergence (2)

Answer 11

• occurs when the eye muscles contract so that both eyes focus on a single object
• finger tip to nose

Question 12

retinal disparity (2)

Answer 12

• difference in relative position of an object as seen by both eyes
• stereoscopic vision

Question 13

monocular depth cues

Answer 13

depth cues that we can perceive with only one eye

Question 14

accommodation

Answer 14

curving of lens to focus on nearby objects

Question 15

motion parallax

Answer 15

used when surroundings are in motion