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Type: Artigo de periódico
Title: Lexical semantic memory in amnestic mild cognitive impairment and mild Alzheimer's Disease
Author: Balthazar, MLF
Martinelli, JE
Cendes, F
Damasceno, BP
Abstract: Objective: To study lexical semantic memory in patients with amnestic mild cognitive impairment (aMCl), mild Alzheimer's disease (AD) and normal controls. Method: Fifteen mild AD, 15 aMCI, and 15 normal control subjects were included. Diagnosis of AD was based on DSM-IV and NINCDS-ADRDA criteria, and that of aMCl, on the criteria of the International Working Group on Mild Cognitive Impairment, using CDR 0.5 for aMCl and CDR 1 for mild AD. All subjects underwent semantic memory tests (Boston Naming-BNT, CAMCOG Similarities item), Rey Auditory Verbal Learning Test (RAVLT), Mini-Mental Status Examination (MMSE), neuropsychological tests (counterproofs), and Cornell Scale for Depression in Dementia. Data analysis used Mann-Whitney test for intergroup comparisons and Pearson's coefficient for correlations between memory tests and counterproofs (statistical significance level was p < 0.05). Results: aMCl patients were similar to controls on BNT and Similarities, but worse on MMSE and RAVLT. Mild AD patients scored significantly worse than aMCl and controls on all tests. Conclusion: aMCl impairs episodic memory but tends to spare lexical semantic system, which can be affected in the early phase of AD.
Subject: semantic memory
mild cognitive impairment
Alzheimer's disease
neuropsychological tests
Country: Brasil
Editor: Assoc Arquivos Neuro- Psiquiatria
Citation: Arquivos De Neuro-psiquiatria. Assoc Arquivos Neuro- Psiquiatria, v. 65, n. 3A, n. 619, n. 622, 2007.
Rights: aberto
Identifier DOI: 10.1590/S0004-282X2007000400014
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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