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According to the text,we cannot even imagine a color called reddish green because


A) red and green are primary colors.
B) red and green are noncomplementary colors.
C) red and green are complementary colors.

D) None of the above
E) All of the above

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C

Each pixel in digital video displays


A) is either red or blue or yellow.
B) has two subelements that are complementary colors.
C) has three subelements that are red,green,and blue.

D) None of the above
E) A) and B)

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Physiological support for opponent color representation comes from


A) the discovery of three types of cones in the retina.
B) differences in the photopigments found in rods and cones.
C) the discovery of lateral geniculate nucleus (LGN) cells that responded to colors showing op- ponency.

D) All of the above
E) B) and C)

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______________ light would be considered colorless.


A) Achromatic
B) All heterochromatic
C) Monochromatic

D) B) and C)
E) A) and B)

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Concerning rod and cone monochromats,


A) rod monochromats see no color while cone monochromats see just one color.
B) rod monochromats are rare but still more common than cone monochromats.
C) rod monochromats suffer from protanopia while cone monochromats suffer from deuteran- opia.

D) A) and C)
E) A) and B)

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What do pointillist paintings have in common with digital color video displays with regard to how each represents color? What are the major differences between them?

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Both use a limited number of colors,and ...

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A heterochromatic light source that emits relatively more long wavelengths than either short or medium wavelengths is


A) sunlight.
B) fluorescent light.
C) incandescent light.

D) A) and B)
E) All of the above

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With an additive color mixture,mixing yellow and blue light on a white surface produces


A) green.
B) red.
C) white.

D) A) and B)
E) A) and C)

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C

Achromatopsia


A) is genetically inherited on the X chromosome.
B) is genetically inherited on the Y chromosome.
C) is due to damage to the ventral pathway.

D) All of the above
E) None of the above

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C

Lightness constancy allows us to perceive the intrinsic properties


A) of a surface despite changes in lighting conditions.
B) of a surface because of changes in lighting conditions.
C) of the lighting conditions despite changes in the appearance of the surface.

D) A) and C)
E) B) and C)

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By convention,the three primary colors for additive color mixing


A) are cyan,magenta,and yellow.
B) are red,blue,and green.
C) can be any three colors.

D) A) and B)
E) A) and C)

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The spectrum is that portion of the spectrum ranging from 400 to 700 nm.


A) visible;electromagnetic
B) electromagnetic;visible
C) invisible;electromagnetic

D) None of the above
E) B) and C)

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The spectral power distribution of incandescent light is that of fluorescent light.


A) greater than
B) less than
C) different than

D) A) and B)
E) None of the above

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If the original color is ,then the color afterimage would be .


A) red;blue
B) yellow;green
C) blue;yellow

D) None of the above
E) All of the above

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Going clockwise around the color circle,wavelength increases as you go from blue (450 nm)to cyan (500 nm)to green (550 nm),and so on.Beyond red (650 nm),and before we return to blue,however,lies a quadrant of nonspectral purples.Are the wavelengths of these purples below 450 nm,above 650 nm,or something else altogether?

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Nonspectral purples are so named because...

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The three independent dimensions of color experience are


A) hue,saturation,and brightness.
B) color,saturation,and brightness.
C) wavelength,saturation,and hue.

D) None of the above
E) All of the above

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A medium wavelength cone (M-cone) contains a photopigment that


A) absorbs only 550 nm light.
B) absorbs only 650 nm light.
C) absorbs light across most of the visible spectrum.

D) A) and B)
E) A) and C)

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Metameric color-matching experiments provide evidence for three types of cones,and retinal densitometry provides evidence.


A) psychophysical;physiological
B) research;phenomenological
C) physiological;psychophysical

D) All of the above
E) A) and B)

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Metamers are any two stimuli that are physically but are perceptually .


A) different;identical
B) identical;different
C) identical;identical

D) A) and C)
E) All of the above

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The visible spectrum is that portion of the electromagnetic spectrum that ranges from to nm.


A) 400;800
B) 300;600
C) 400;700

D) A) and C)
E) A) and B)

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