Dissociating language switching from executive control in bilinguals with MCI.

Bilingual language control is a dynamic cognitive system that enables individuals to effectively manage language use and prevent interference when switching between languages. Research indicates that certain neurodegenerative conditions may influence language-switching abilities or hinder the suppression of cross-language interference. However, it remains uncertain whether neurodegeneration primarily affecting mesial temporal structures, such as Mild Cognitive Impairment (MCI), impacts lexical retrieval in dual-language naming conditions.

Active bilingualism delays the onset of mild cognitive impairment.

Lifelong bilingualism may contribute to cognitive reserve (CR) in neurodegenerative diseases as shown by a delay of the age at symptom onset in bilinguals with Alzheimer's disease (AD) and Mild Cognitive Impairment (MCI). However, some studies have failed to show this bilingual advantage, suggesting that it might depend on the type and degree of bilingualism. In the present study, we tested the hypothesis that active bilingualism, defined as the continuous use of the two languages as opposed to second language exposition only, may protect against cognitive decline.

The missing link between faces and names: evidence from Alzheimer's disease patients.

Retrieval of proper names is a cause of concern and complaint among elderly adults and it is an early symptom of patients suffering from neurodegenerative diseases such as Alzheimer's disease (AD). While it is well established that AD patients have deficits of proper name retrieval, the nature of such impairment is not yet fully understood. Specifically, it is unknown whether this deficit is due to a degradation of the links between faces and proper names, or due to deficits in intentionally accessing and retrieving proper names from faces.

On the parallel deterioration of lexico-semantic processes in the bilinguals' two languages: evidence from Alzheimer's disease.

In this article we aimed to assess how Alzheimer's disease (AD), which is neurodegenerative, affects the linguistic performance of early, high-proficient bilinguals in their two languages. To this end, we compared the Picture Naming and Word Translation performances of two groups of AD patients varying in disease progression (Mild and Moderate) with that of bilingual individuals diagnosed with mild cognitive impairment (MCI). The results revealed that the linguistic deterioration caused by AD affected the two languages similarly.