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    Word retrieval deficits in adults with brain tumors

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    Author
    Zak, Marsha Gale
    Issue Date
    1998
    Keywords
    Health Sciences, Speech Pathology.
    Advisor
    Holland, Audrey L.
    
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    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    The relationship between brain invaded by tumor and consequent word retrieval deficits was investigated. Performance scores from 10 individuals who underwent craniotomy for tumor resection were obtained using contexts of constrained naming, verbal fluency, and picture description during pre- and post-craniotomy. This study described qualitative and quantitative differences of impairment to elucidate the nature and extent of naming impairment in individuals with cerebral hemisphere tumors. For all tasks, independent of group, performance decrements were reported pre-operatively in relation to normative data, with subsequent post-operative decline. This was particularly true for the Left Hemisphere Group who exhibited poorer performance than the Right Hemisphere Group. It was expected that the Frontal Group would have greater difficulty on tasks requiring intact frontal lobe function (i.e. Verbal Fluency), but the Non-Frontal Group performed more poorly. Surprisingly, the Frontal Lobe Group showed the smallest decrement, and the Non-Frontal and Left Hemisphere Groups showed the worst performance overall. Pre- and post-operatively, all subjects exhibited greater word retrieval deficits than normal controls during verbal fluency tasks. The overall disruption of word retrieval across tasks was predictable for time of examination, but not for site of lesion. The results of this study suggest that the word retrieval deficits of brain tumor patients may differ from traditional aphasia profiles. This knowledge may contribute to a better understanding of language processing and production in tumor-related aphasia.
    Type
    text
    Dissertation-Reproduction (electronic)
    Degree Name
    Ph.D.
    Degree Level
    doctoral
    Degree Program
    Graduate College
    Speech and Hearing Sciences
    Degree Grantor
    University of Arizona
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