Journal
DEMENTIA AND GERIATRIC COGNITIVE DISORDERS EXTRA
Volume 9, Issue 1, Pages 136-151Publisher
KARGER
DOI: 10.1159/000496824
Keywords
Mild cognitive impairment; Language; Alzheimer's disease
Categories
Funding
- Alzheimer's Association/Canada Brain
- Canadian Institutes of Health Research doctoral fellowship
- Morris Goldenberg Medical Research Endowment
- CABHI
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Background/Aims: The purpose of this study was to explore language differences between individuals diagnosed with amnestic mild cognitive impairment multiple domain (aMCIm) and those with probable Alzheimer's disease, with a goal of (i) characterizing the language profile of aMCIm and (ii) determining whether the profiles of dementia of Alzheimer's type (DAT) and aMCIm individuals are on a continuum of one diagnostic entity or represent two distinct -cognitive disorders. Methods: Language data from 28 patients with consensus diagnosis of aMCIm and DAT derived from a retrospective chart review were compared to that of healthy controls. Results: A non-parametric statistic established that there was no significant difference between groups in age, years of education or duration of symptoms and that expressive language was found to be relatively intact in both patient groups. In contrast, both groups exhibited significant impairments on receptive language tests and on linguistically complex tasks that rely on episodic memory and executive functions. Individuals with aMCIm and DAT present with configurations of language features that are largely in parallel to each other and reflect predominantly quantitative differences. Conclusion: Language tests provide an important contribution to the diagnostic process in their capacity to identify language impairments at an early stage. Understanding the nature of language decline is critically important to the intervention process as this information would inform cognitive intervention approaches aimed at promoting quality of life in people living with MCI and dementia. (C) 2019 The Author(s) Published by S. Karger AG, Basel
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