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Cognitive Psychology > Vision > Flashcards

Vision Flashcards

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1
Q

Dark adaption

A

Same physical environment, different visual experiences at different stages of dark adaption
- Vision is not a clear window onto reality

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2
Q

T or F: Vision is a clear window onto reality

A

FALSE

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3
Q

Motion aftereffect

A

Static image, perceived motion

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4
Q

Visual illusion: Moon

A

the moon looks larger on the horizon than when its high in the sky

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5
Q

Visual completion

A

T-junctions indicate occlusion

  • Continuous: horse & cat
  • Visual completion type 2: illusory contour
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6
Q

Impossible objects

A

Optical illusion

- 3 legs 2 head

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7
Q

Two hemisphere are connected by ____

A

corpus callosum

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8
Q

Brain-body is dominated by _____ correspondence

A

Contra-lateral

  • left hemisphere: right body
  • right hemisphere: left body
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9
Q

T or F: two hemispheres do not have identical functions

A

True

- left hemisphere is important for speech in most people (95%)

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10
Q

T or F: cutting the corpus callosum leads to split brain

A

true

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11
Q

Predators have eyes in the ___; pray have eyes to the ____

A

front; side

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12
Q

T or F: the two eyes have overlapping visual field

A

true

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13
Q

Input from left eye go to which hemisphere

A

Both

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14
Q

Nasal input goes to

A

Right hemisphere

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15
Q

Temporal part goes to

A

left hemisphere

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16
Q

Anatomical separation

A

Electrophysiological recording in monk inferotemporal cortex (IT): face cells

  • Bars represent neural “spikes” or firing
  • More spikes = greater response
  • Prefers face stimulus!
17
Q

Electrophysiological recording in monkey inferotemporal cortex (IT)

A

non-face cells

18
Q

Intracranal electrode recording in ____

A

epilepsy

19
Q

Prosopagnosia

A

Impairment in recognizing other individuals by their faces

20
Q

Object agnosia

A

.

21
Q

Patient CK

A

impaired object recognition, intact face recognition

- CK is agnosic - cant process objects

22
Q

Inversion effect

A

normal subjects show a much slower RT and lower accuracy for upside-down faces than for other categories

23
Q

Faces are processed _____

A

configurally (holistically)

24
Q

5 cognitive modules

A
  1. Domain specific
  2. Innate maybe?
  3. Hard wired in the brain
  4. Informationally encapsulated
  5. Mandatory
25
Q

Two kind of photo-sensitive receptors on the retina

A
  1. Rods

2. Cones

26
Q

Rods

A

Individual sensitivity high

- Extensive convergence onto bipolar and ganglion cells

27
Q

Outcome of rods

A

Low resolution image

- provided there is ample light

28
Q

Cones

A

Limited convergence

  • high resolution image
  • provided there is ample light
29
Q

Subsections of ganglion cells

A
  1. M cells

2. P cells

30
Q

M cells

A

Large, faster, transient response

  • Receive input from large # of photoreceptors
  • Good light sensitivity
  • Poor spatial resolution
31
Q

P cells

A

Small, slower, sustained response

  • Receive input from small # of photoreceptors
  • Good spatial resolution
  • Poor light sensitivity
32
Q

Two visual stream

A
  1. Ventral

2. Dorsal

33
Q

Occipito-temporal

A

Object shape recognition

- ventral: what

34
Q

Ventral ____; Dorsal _____

A

what; where

35
Q

Occipito-parietal

A

Object location, spatial attention

- dorsal: where

36
Q

Patient DF

A

Low level visual functions normal

  • Adept at tactual recognition
  • Cannot perceive shape
  • Cant make a copy of the model but can draw model from memory
  • Later if you ask her what the object is she does not know
37
Q

Difference between ventral and dorsal stream in _____ processing

A

Shape

  • Both streams process object shape
  • processing is not identical`
38
Q

Visual illusion: affects _____, not action

A

Perception

- complex shape analysis

Cognitive Psychology (7 decks)

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