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Colour agnosia

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Color agnosia (from the Greek ἀγνωσία agnōsia, "ignorance" or "non-knowledge"), is a medical or psychological condition that prevents a person from correctly associating hue names with common objects. The sufferer retains the ability of distinguishing hues. It is a specific form of agnosia and generally results from damage to the visual cortex, often in V4 (as opposed to most other kinds of color blindness, which stem from problems with the photoreceptor cells).

NotesEdit

Color agnosia is different than color anomia, a condition in which a person can distinguish between colors but cannot connect those colors to their names. Failure to investigate color agnosia may lead to late diagnosis of brain cancer.

See alsoEdit

External linksEdit

  • Damasio A, Yamada T, Damasio H, Corbett J, McKee J (October 1980). Central achromatopsia: behavioral, anatomic, and physiologic aspects. Neurology 30 (10): 1064–71.
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