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Intro to Psychology > Visual perception > Flashcards

Visual perception Flashcards

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1
Q

How many light senstive cells does the retina have?

A

107 million

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2
Q

How many rods does the retina have?

A

100 million

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3
Q

How many cones does the retina have?

A

7 million

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4
Q

what are rods?

A

mostly used in peripheral view, more light sensitive, used for black and white view.

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5
Q

How long does it take for rods to adjust to the dark?

A

20-30 minutes

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6
Q

What are cones?

A

Mostly in fovea, detail sensitive, detect color.

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7
Q

How long does it take for cones to adapt to light?

A

2-3 minutes

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8
Q

What is the Young- Helmholtz theory Trichromatic theory?

A

3 types of color: S cones=blue
M cones= green
L cone= red

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9
Q

What is color blindness?

A

lacking one or more types of cones

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10
Q

What is the opponent process theory?

A

red opposes green
blue opposes yellow
black opposes white

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11
Q

What is an after image?

A

Opposite color stands out when looked at

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12
Q

What is depth?

A

binocular cues( 2 eyes) and monocular cue (1 eye)

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13
Q

What is binocular disparity?

A

each eye gets a different picture, the greater the difference the closer the object

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14
Q

What is linear perspective?

A

parallel lines converge with distance

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15
Q

What is relative size?

A

bigger thing are closer

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16
Q

What is texture gradient?

A

texture gets finer with distance

17
Q

What do visual illusions do?

A

Reveal information about the visual systems.

18
Q

What are the different types of illusions?

A
  • perspective illusions
  • horizontal/ vertical illusions
  • contrast illusions
  • perspective illusions
  • contrast illusions
19
Q

What is the figure/ground principle?

A

Figure–ground (perception) Figure–ground organization is a type of perceptual grouping which is a vital necessity for recognizing objects through vision

20
Q

What are the wavelengths for visible light?

A

400-750 nanometer

Intro to Psychology (42 decks)

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