Cognitive Neuropsychological Analysis and Neuroanatomic Correlates in a Case of Acute Anomia

Cognitive Neuropsychological Analysis and Neuroanatomic Correlates in a Case of Acute Anomia We describe an analysis of lexical processing performed in a patient with the acute onset of an isolated anomia. Based on a model of lexical processing, we evaluated hypotheses as to the source of the naming deficit. We observed impairments in oral and written picture naming and oral naming to definition with relatively intact semantic processing across input modalities, suggesting that output from the semantic system was impaired. In contrast to previous reports, we propose that this pattern represents an impairment that arises late in semantic processing prior to accessing mode-specific verbal and graphemic output lexicons. These deficits were associated with a lesion in the posterior portion of the middle temporal gyrus or area 37, an area of supramodal association cortex that is uniquely suited as a substrate for the multimodal deficit in naming. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Brain and Language Elsevier

Cognitive Neuropsychological Analysis and Neuroanatomic Correlates in a Case of Acute Anomia

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Publisher
Elsevier
Copyright
Copyright © 1997 Academic Press
ISSN
0093-934X
eISSN
1090-2155
DOI
10.1006/brln.1997.1786
pmid
9184100
Publisher site
See Article on Publisher Site

Abstract

We describe an analysis of lexical processing performed in a patient with the acute onset of an isolated anomia. Based on a model of lexical processing, we evaluated hypotheses as to the source of the naming deficit. We observed impairments in oral and written picture naming and oral naming to definition with relatively intact semantic processing across input modalities, suggesting that output from the semantic system was impaired. In contrast to previous reports, we propose that this pattern represents an impairment that arises late in semantic processing prior to accessing mode-specific verbal and graphemic output lexicons. These deficits were associated with a lesion in the posterior portion of the middle temporal gyrus or area 37, an area of supramodal association cortex that is uniquely suited as a substrate for the multimodal deficit in naming.

Journal

Brain and LanguageElsevier

Published: Jun 1, 1997

References

  • Where do semantic errors come from?
    Caramazza, A.; Hillis, A.E.
  • Delineation of single-word semantic comprehension deficits in aphasia, with anatomical correlation
    Hart, J.; Gordon, B.

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