pure word blindness การใช้

• These variants of visual agnosia include prosopagnosia ( inability to recognize faces ), pure word blindness ( inability to recognize words, often called " agnosic alexia " or " pure alexia " ), agnosias for colors ( inability to differentiate colors ), agnosias for the environment ( inability to recognize landmarks or difficult with spatial layout of an environment, i . e . topographagnosia ) and simultanagosia ( inability to sort out multiple objects in a visual scene ).