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• W2741447257 abstract "Introduction: A recent increase in studies suggests a role of age-related sleep changes in executive functions (EF). However, this relationship remains unclear and mixed results have emerged. Objective: To investigate how age-related sleep changes may play an important role in the extent to which healthy older adults exhibit decline in EF. Methods: A systematic strategy was employed to identify the available literature on age-related sleep changes and EF. Results: Of the 465 studies identified, 26 were included. Results suggest that multiple sleep parameters differ in the way they benefit or impair EF. Parameters such as greater wake after sleep onset and lower sleep efficiency, in addition to circadian fragmentation of sleep, showed more consistent results and are potentially correlated with worsening in EF measures. However, other results seem inconclusive. Conclusion: These findings were discussed based on the prefrontal circuitry vulnerability model, in which sleep has been identified as a beneficial factor for prefrontal cortex functioning and hence for EF, which relies mostly on this brain area and its related networks. RESUMO. Introducao: Um aumento recente de estudos sugere um papel das mudancas do sono relacionadas ao envelhecimento nas funcoes executivas (FE). Entretanto, essa relacao ainda nao e clara e resultados mistos tem emergido. Objetivo: Investigar como as mudancas do sono relacionadas a idade podem desempenhar um papel importante na medida em que idosos saudaveis apresentam um declinio nas FE. Metodos: Uma estrategia de revisao sistematica foi empregada para identificar a literatura disponivel sobre mudancas no sono relacionadas ao envelhecimento e FE. Resultados: Dos 465 estudos identificados, 26 foram incluidos. Os resultados sugerem que multiplos parâmetros do sono diferem na forma como beneficiam ou comprometem as FE. Parâmetros como maiores despertares apos o inicio do sono e baixa eficiencia do sono, alem da fragmentacao circadiana do sono, mostraram resultados mais consistentes e potencialmente se correlacionaram com a piora nas medidas de FE. Contudo, outros resultados parecem inconclusivos. Conclusao: Esses achados foram discutidos baseadamente no modelo de vulnerabilidade pre-frontal, no qual o sono tem sido apontado como um fator benefico para o funcionamento do cortex pre-frontal e, consequentemente, para as FE que tem como substrato principal essa area cerebral e regioes relacionadas. Palavras-chave: funcoes executivas, sono, idoso, cortex pre-frontal." @default.
• W2741447257 created "2017-08-08" @default.
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• W2741447257 date "2016-01-01" @default.
• W2741447257 modified "2023-09-23" @default.
• W2741447257 title "Sleep and executive functions in older adults" @default.
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