Ch. 4.2 - Visual Pathways to the Brain Flashcards

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1
Q

optic chiasm

A

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

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2
Q

lateral geniculate nucleus

A

region within thalamus that directs visual info throughout the brain

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3
Q

feature detection cells

A

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

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4
Q

ventral stream (4)

A
  • extends from visual cortex to the temporal lobe
  • responsible for object and face recognition
  • pareidolia and prosopagnosia
  • fusiform face area (FFA)
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5
Q

greeble experiment

A

fusiform face area responsible visual expertise

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6
Q

perceptual constancy

A

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

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7
Q

size constancy (2)

A
  • relies on other depth cues to make perceptual corrections to the retinal images
  • rely on contextual depth cues to achieve deception
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8
Q

lightness constancy

A

maintain perception under uneven illumination

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9
Q

dorsal stream (2)

A
  • extends from visual cortex to the parietal lobe

- responsible for depth and motion perception

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10
Q

binocular depth cues

A

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

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11
Q

convergence (2)

A
  • occurs when the eye muscles contract so that both eyes focus on a single object
  • finger tip to nose
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12
Q

retinal disparity (2)

A
  • difference in relative position of an object as seen by both eyes
  • stereoscopic vision
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13
Q

monocular depth cues

A

depth cues that we can perceive with only one eye

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14
Q

accommodation

A

curving of lens to focus on nearby objects

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15
Q

motion parallax

A

used when surroundings are in motion

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