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Cortex. 1985 Mar;21(1):121-34.

A case of visual agnosia showing a disorder of pre-semantic visual classification.

Abstract

A case (J.R.) of associative visual agnosia (loss of meaning for visually presented objects without any serious sensory disorder) is reported. When asked to match a given name to sample the patient made both visual and semantic errors. Whereas semantic errors were reduced by priming, visual errors were intractable. It is argued that there is a disorder at the stage of pre-semantic abstraction, similar to that postulated elsewhere for some cases of deep dyslexia, contributing to the agnosia.

PMID:
3987306
[PubMed - indexed for MEDLINE]
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