Language changes in bilingual individuals with Alzheimer's disease

Stilwell, Becca L.; Dow, Rebecca M.; Lamers, Carolien; Woods, Bob

doi:10.1111/1460-6984.12190

Cited by 19 publications

(12 citation statements)

References 37 publications

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“…A recent review of language impairments in bilingual patients with AD suggested that the disease appeared to affect both languages similarly but noted that this general conclusion needed to be confirmed, given the limited number of studies on the subject (Stilwell et al, 2015). Recently, another study contradicted this suggestion, reporting differential impairment of the two languages in bilingual AD patients (Ivanova et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies of bilingual AD patients have examined the pattern of language deterioration of the lexico-semantic system (Costa et al, 2012;de Picciotto & Friedland, 2001; De Santi, Obler, Sabo-Abramson, & Goldberger, 1990;Friedland & Miller, 1999;Gómez-Ruiz, Aguilar-Alonso, & Espasa, 2012;Hyltenstam & Stroud, 1989;Ivanova et al, 2014;McMurtray, Saito, & Nakamoto, 2009;Meguro et al, 2003;Mendez, Perryman, Pontón, & Cummings, 1999;Salvatierra, Rosselli, Acevedo, & Duara, 2007; for a review see Stilwell, Dow, Lamers, & Woods, 2015). As can be seen in Table 1, most of the cross-sectional studies found differential language impairment, with the non-dominant language more affected by AD in most cases.…”

Section: Parallel or Differential Language Deterioration In Bilingualmentioning

confidence: 99%

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Language deterioration in bilingual Alzheimer's disease patients: A longitudinal study

Calabria

Cattaneo

Marne

et al. 2017

Journal of Neurolinguistics

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In the context of bilingual research, little is known about the effects of neurodegenerative disorders (NDs) on the processing of two languages in a bilingual. In a recent cross-sectional study, we showed that Mild Cognitive Impairment (MCI) and Alzheimer's disease (AD) had similar effects on lexico-semantic processes in the two languages of highly proficient bilinguals (Costa et al., Neuropsychologia, 2012, 50, 740-53). In the present longitudinal study, we extend this finding by looking at the pattern of language deterioration over time in the same population of Catalan-Spanish bilingual patients. All the participants completed three language-processing tasks (picture naming, word translation and word comprehension), both in their dominant (L1) and non-dominant (L2) language. At one year, the final group was made up of 50 patients: 15 with MCI and 35 with AD. For AD but not MCI, the language deterioration over time was the same in both languages, as previously reported in the cross-sectional study. The results are discussed in the frame of the hypothesis of shared lexico-semantic processing in highly proficient bilinguals and the influence of executive control deficits in language production.

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Section: Discussionmentioning

confidence: 99%

Section: Parallel or Differential Language Deterioration In Bilingualmentioning

confidence: 99%

Language deterioration in bilingual Alzheimer's disease patients: A longitudinal study

Calabria

Cattaneo

Marne

et al. 2017

Journal of Neurolinguistics

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“…Bilinguals diagnosed with Alzheimer’s disease may exhibit cognitive impairment and lapses in attention, decreased language control ability and increased unwanted code-switching ( Friedland and Miller, 1999 ). Bilingual individuals with Alzheimer’s disease show linguistic decrements in both their dominant and non-dominant languages ( Stilwell et al, 2016 ). English dominant bilinguals with Alzheimer’s disease were more likely to name pictures in the non-dominant language than controls; and Spanish-dominant bilinguals with Alzheimer’s disease were equally likely to name pictures in their non-dominant language than controls ( Gollan et al, 2011 ).…”

Section: Language Use In Individuals With Alzheimer’s Diseasementioning

confidence: 99%

Uncovering the Mechanisms Responsible for Why Language Learning May Promote Healthy Cognitive Aging

Antoniou

Wright

2017

Front. Psychol.

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One of the great challenges facing humankind in the 21st century is preserving healthy brain function in our aging population. Individuals over 60 are the fastest growing age group in the world, and by 2050, it is estimated that the number of people over the age of 60 will triple. The typical aging process involves cognitive decline related to brain atrophy, especially in frontal brain areas and regions that subserve declarative memory, loss of synaptic connections, and the emergence of neuropathological symptoms associated with dementia. The disease-state of this age-related cognitive decline is Alzheimer’s disease and other dementias, which may cause older adults to lose their independence and rely on others to live safely, burdening family members and health care systems in the process. However, there are two lines of research that offer hope to those seeking to promote healthy cognitive aging. First, it has been observed that lifestyle variables such as cognitive leisure activities can moderate the risk of Alzheimer’s disease, which has led to the development of plasticity-based interventions for older adults designed to protect against the adverse effects of cognitive decline. Second, there is evidence that lifelong bilingualism acts as a safeguard in preserving healthy brain function, possibly delaying the incidence of dementia by several years. In previous work, we have suggested that foreign language learning programs aimed at older populations are an optimal solution for building cognitive reserve because language learning engages an extensive brain network that is known to overlap with the regions negatively affected by the aging process. Here, we will outline potential future lines of research that may uncover the mechanism responsible for the emergence of language learning related brain advantages, such as language typology, bi- vs. multi-lingualism, age of acquisition, and the elements that are likely to result in the largest gains.

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“…The disease from that point on is accompanied by deterioration of comprehension, speech, writing and reading [14]. Language dysfunction is one of the most significant symptoms in terms of incidence on textuality in AD [15] [16]. In the earliest stages, it is slight but it increases in time through foreseeable phases [17] [18] [19] [20].…”

Section: Introductionmentioning

confidence: 99%

Narrativity and Memory Analysis in Alzheimer’s Disease

Hazif‐Thomas¹,

Billon²,

Thomas³

2017

OJPsych

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Alzheimer's Disease (AD) is a neurodegenerative illness with frequency of occurrence increasing with old age. If memory impairment setting progressively is here an element associated upfront, other neurocognitive troubles are also associated, for example, language impairment which can degenerate into aphasia. Aim of the study. To evaluate semantic and textual impairment in AD. Methods. Populations studied concerned 151 AD patients in consultation at Brest University Hospital. Certain sociodemographic data (sex, age, cultural levels) were collected as well as results from neuropsychological tests: (Folstein-MMSE; Dubois's 5-word test; fluencies, Dubois' s frontal test battery; Cornell's scale for depression; Barbizet's test, "The Lion's tale", for textual analysis. Demented patients were composed of 102 females and 49 males of average age 80.3 ± 6.91. All the tests, including the number of items memorized latterly in the Barbizet's test are impaired all the more by Folstein's test being altered. The formal fluency on demented patients is less impaired than the semantic lexical fluency test (scored respectively 5.74 ± 1. 09 versus 4.41 ± 2. 19; t = 5.60, p < 0.01). The studied demented cohort shows more intrusions (n = 36) than inversions in the delayed Lion's tale, whether for items or for episodes in which they occur (n = 19). The regressive PLS analysis shows that for the explanation of the overall scores to do with "The lion's tale", calculated later, only attainment of formal fluency has any notable influence (Regression coefficient CR = 0.224) or, more accessorily, the cultural level (CR = 0.12). Conclusions: Attainment of category fluency and patient culture levels has effects on narrativity.

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Language changes in bilingual individuals with Alzheimer's disease

Abstract: More robust, clinically relevant research designs that test current theoretical frameworks are needed to inform the development of appropriate assessments, diagnosis and person-centred care for bilingual individuals with AD.

Cited by 19 publications

References 37 publications

Language deterioration in bilingual Alzheimer's disease patients: A longitudinal study

Language deterioration in bilingual Alzheimer's disease patients: A longitudinal study

Uncovering the Mechanisms Responsible for Why Language Learning May Promote Healthy Cognitive Aging

Narrativity and Memory Analysis in Alzheimer’s Disease

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