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Assessment of linguistic and verbal short-term memory components of language abilities in aphasia
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Abstract:
Some current models of aphasia emphasize a role of short-term memory in the processing of language and propose that the language impairment in aphasia involves impairment to cognitive processes that activate and maintain representations of words over the time-period needed to support single word and multiple word tasks, including verbal span tasks. This paper reports normative data from 39 people with aphasia and 16 age-matched neurotypical controls on a test battery for aphasia that assesses effects of increased short-term/working memory load on word and sentence processing as well as effects of linguistic variations on verbal short-term memory abilities Two concepts are discussed that capture the unique potential of this test battery for research and clinical practice: specificity of diagnosis and sensitivity to all degrees of aphasia severity, including mild aphasia. An analysis is included that shows how the performance of individuals with mild aphasia who achieve normal level of performance on the Western Aphasia Battery (Kertesz, 2006) show a decline in a temporal delay condition that is greater than performance of control participants. We also report preliminary data showing differential effects of adding a time interval before a response or between items to be compared: reduced accuracy for some individuals with aphasia and improved accuracy for others. The theoretical and clinical importance of this finding is discussed, as well as the overall potential for this test battery to be used in research and as a clinical tool. Finally, we discuss the relevance of this test battery to investigate functional communication abilities in aphasia.
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Article
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URL: http://www.ncbi.nlm.nih.gov/pubmed/30220790 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6135249/ https://doi.org/10.1016/j.jneuroling.2018.02.006
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Effects of semantic context on access to words of low imageability in deep-phonological dysphasia: a treatment case study
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Effects of increased memory load on short-term facilitation of repetition in persons with aphasia
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Improving auditory access to low imageabilty words by embedding them in imageable semantic-syntactic contexts in a case of deep phonological dysphasia
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Cross-structural priming in sentences with verb particles and verb prepositions: A replication
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Comprehension of sentences with reversible semantic roles is sensitive to phonological STM capacity.
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Effects of working memory load on processing of sounds and meanings of words in aphasia
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Verbal Perseveration in Aphasia during Word-String Repetition: Effects of a Filled versus Silent Interstimulus Interval
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Remediation of language processing in aphasia: Improving activation and maintenance of linguistic representations in (verbal) short-term memory
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The effect of syntactic and semantic argument structure on sentence production in aphasia
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Remediation of language processing in aphasia: Improving activation and maintenance of linguistic representations in (verbal) short-term memory
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A processing approach to the assessment of language and verbal short-term memory in aphasia
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Treatment of a language activation maintenance deficit in Wernicke's aphasia
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A Diagnostic Battery to Assess Language and Short-term Memory Deficits in Aphasia
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Syntactic Priming Treatment for Severe Agrammatic Aphasia: A Case Study
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