Color Vision Flashcards

1
Q

What is light?

A

the spectrum of electromagnetic energy that the eye can see.

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2
Q

The human eye can see wavelengths between what?

A

400 and 700 nm

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3
Q

What are the colors that the human eye can see?

A

violet, indigo, blue, green, yellow, orange, red.

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4
Q

A pigment/color absorbs other wavelengths but what occurs?

A

It reflects its wavelengths.

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5
Q

A red jacket absorbs all wavelengths except what?

A

Long-Wavelengths light and appears red.

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6
Q

What is white color/light consists of?

A

a uniform mixture of different colors/wavelengths.

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7
Q

For wavelength detection by visual pigments consists of how many rods?

A

only by one type of rod

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8
Q

The visual pigment rhodopsin in rods has what type of absorption

A

505nm absorption peak so we can see color.

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9
Q

What is rhodopsin also called?

A

Purple Vision

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10
Q

What is responsible for black and white vision?

A

Rhodopsin

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11
Q

The photopsin in blue cones are sensitive to what?

A

to violet with a 445 nm absorption peak.

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12
Q

The photopsin in green cones are sensitive to what?

A

green with a 535nm absorption peak.

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13
Q

The photopsin in red cones are sensitive to what?

A

yellow-orange with a 570 nm absorption peak

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14
Q

The visual pigments in cones are called what?

A

Color pigments.

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15
Q

Humans are colorblind when?

A

in darkness or low light.

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16
Q

The normal human eye can match any color in the visible spectrum by what?

A

mixing the three primary colors (red, green, blue)

17
Q

Humans are said to be what due to color detection?

A

trichromats

18
Q

What are dichromats?

A

almost a complete loss in the sensitivity to one of the primary colors and only two are used to match spectral colors.

19
Q

What is an anomalous trichromat?

A

some reduction in sensitivity to one of the primary colors.

20
Q

Defects in sensitivity to red and green cones are more common than what?

A

blue

21
Q

Most animals are what?

A

Dichromats

22
Q

Primates are what in regards to color vision?

A

trichromat like humans.

23
Q

Many birds and marsupials are what?

A

tetrachromats.

24
Q

What is a tetrachromat?

A

they have four cone pigments including UV

25
Q

Amphibians, some fish , and reptiles are what in terms to eye vision?

A

tetrachromat.