Sentence Repetition and Processing Resources in Alzheimer’s Disease  

Oleh:

Small, Jeff A. ; Kemper, Susan ; Lyons, Kelly

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 75 no. 2 (2000), page 232-258.
Topik: Alzheimer’s disease; sentence repetition; sentence processing; syntactic complexity; working memory; processing resource capacity; speech production; serial position
Fulltext: 75_02_Small.pdf (145.82KB)

Isi artikel

Sentence processing in Alzheimer’s disease (AD) has been found to be influenced by several grammatical and extragrammatical factors, including phrase structure and verb–argument relations, number of propositions/verbs, and processing resource capacity. This study examines the effects of these variables on sentence production in AD. Normal control and AD subjects were asked to repeat six types of sentences varying along the above dimensions of complexity. Subjects’ processing resource capacity was measured using several verbal working memory tests. AD subjects’ sentence-repetition performance was impaired compared to the normal control group. Significant effects were observed for branching direction of phrase structure, canonicity of verb–argument relations, and serial position of errors. Sentencerepetition performance significantly correlated with working memory scores. The findings are interpreted within a resource capacity theory of sentence processing.

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