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23 Cards in this Set
- Front
- Back
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What is the principle of univariance?
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wavelengths can have same neural response making it hard to discriminate between them
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What is scoptopic?
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dim light levels
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What is photopic?
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bright day light levels
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What is mesotopic?
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dust and dawn
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What is protanopia?
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no L cones;colorblindness
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What is deuteranopia?
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No M cones;colorblindness
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What is tritanopia?
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No S cones;colorblindness
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What are metamers?
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different wavelengths perceived as same color
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What is trichromacy?
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theory that color of any light is defined in our visual system by the relationship between a set of three cones
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What is L-M?
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red - green
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What is S - (L+M)?
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purple-yellow
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What is L + M?
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black-white
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What is additive color mixture?
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mixture of lights
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What is subtractive color mixture?
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a mixture of pigments
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What is hue?
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the chromatic aspect of color
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What is saturation?
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the chromatic strength of a hue
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What is brightness?
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the distance from black in color space
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What is color space?
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3-d space, established because color perception is based on the outputs of three cone types, that describes the set of all colors
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What is the opponent color theory?
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theory that perception of color is based on the output of three mechanisms, each of them on an opponency between 2 colors
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What is achromatopsia?
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inability to perceive colors that is due to damage to central nervous system
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What is agnosia?
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inability to recognize objects in spite of the ability to see them`
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What is anomia?
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inability to name objects in spite of the ability to see and recognize them
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What is color constancy?
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the tendency of a surface to appear the same color under a fairly wide range of illuminants
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