Multilingualism and Dementia: From the Studies in Brazil and Taiwan Rikako Suzuki 1 , Kenichi Meguro 1 1Geriatric Behavioral Neurology Project, New Industry Creation Hatchery Center (NICHe), Tohoku University Keyword: 認知予備力 , 認知症保護効果 , 認知症発症遅延 , 言語衰退 , 精神症状 , 認知症ケア , 多言語使用 , cognitive reserve , dementia protection effect , dementia onset delay , language decline , psychiatric symptoms , dementia care , multilingualism pp.223-229
Published Date 2021/3/1
DOI https://doi.org/10.11477/mf.1416201744
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Our studies in Brazil and Taiwan revealed that the prevalence of dementia was independent of environment, culture, and use of multilingualism. However, language deterioration in dementia was found to be related to its frequency of use and the environment, and both language, and deterioration were asymmetric. Although the cognitive reserve and protective effect of multilingualism on dementia were shown, the decline in language function was found to be related to psychiatric symptoms of dementia, delusions, and depression which were relieved by providing a reliable language environment. It was suggested that language function evaluation should be considered for dementia care.

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