Vision Flashcards

(45 cards)

0
Q

Transducer

A

It’s output is a nerve impulse each sense has their own

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1
Q

Receptor cells

A

Modified nerve cells

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2
Q

Sensation

A

Raw incoming information

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3
Q

Perception

A

Resulting of processing in the brain

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4
Q

When is light 2d?

A

When it hits the retina

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5
Q

Is depth sent from either eye?

A

No

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6
Q

What is desparity?

A

The difference of images from either eye (can create how you see depth)

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7
Q

Phycophysicist

A

People studying the physical world vs. perceptual experience they try to connect the two

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8
Q

Relative threshold

A

Relative to previous experience there is a minimal change (difference of colors)

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9
Q

JND

A

Just noticeable difference

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10
Q

Subjective scaling

A

Saying numbers that correspond to your experience

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11
Q

What is our hearing range?

A

20 cps- 20,000 cps

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12
Q

Subjective probability

A

The likely hood that you think something will happen to you

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13
Q

In your eye what does the light hit first?

A

Cornea

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14
Q

What is your lens?

A

Biconvex

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15
Q

What is cataracts?

A

Lens becomes cloudy

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16
Q

What was Stratton’s experiment?

A

Displace visual array- upside down glasses - vision is learned

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17
Q

What is vision?

A

Learned

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18
Q

What was kohlers experiment?

A

The clolor and depth changing glasses with upside down side

19
Q

Where are the rods?

A

Out sides of retina responsible for periferal vision and black and white and motion sensitive

20
Q

Where are cones?

A

Middle area of eye sensitive to light an color and details

21
Q

Wavelength to?

22
Q

Brightness to?

23
Q

Purity to?

24
When is something less saturated?
If its closer to gray
25
Helmholtz
Tri chromatic theory
26
What were the old colors In tri chromatic theory? New colors?
Red green blue in the new they added yellow no red
27
Hering
Opponent process-some rods only process color so those colors can't be "mixed" in one color ex: no red-green
28
Black is?
Absence of all colors
29
White
Addition of all colors
30
What percent of men have color problems?
8%
31
Why do we see red?
Ancestral warning signs
32
Intensity
Amount of energy in a light or sound
33
Order of light strike
Cornea, iris, pupil, lens, fovea and retina
34
Retina
The light sensitive inner surface of the eye containing cones and rods
35
Blind spot
Where the optic nerve leaves the eye making it "blind" because there are no receptor cells are located there
36
Feature detectors
Nerve cells in the brain that respond to specific features of the stimulus like shape angle or movement
37
Binocular cues
Depth cues such as desparity that depend on the use of two eyes
38
Accommodation
The process by which the eyes lens changes shape to focus near or far objects on the retina
39
Fovea
The central focal point in the retina around which the eye cones cluster
40
Rods come in
Sets of four
41
How many cones are there?
6 million
42
How many rods?
120 million
43
Absolute threshold
The minimum stimulation needed to detect a particular stimulus 50 percent of the time
44
What is transduction?
All of our senses receive transform and deliver