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EN
Old age is characterized by an age-related cognitive decline. The role of executive functions in this process has recently been indicated. The population of elderly people, however, is not homogenous in terms of intellectual functioning. This diversity may be explained by evoking the notion of cognitive reserve which posits that elderly people have different levels of resources enabling them to compensate for the negative changes. The level of the cognitive reserve is related to the level of the executive functions. This study analyzes the relationship between the levels of three components of the executive functions: flexibility, working memory and planning, and educational, cultural or physical activities carried out throughout life. The results show that educational and cultural activities are important to working memory, while planning is additionally helped by physical activity. Further, some components of the executive functions are more infl uenced by activity before retirement, while others are more affected by activity after retirement.
EN
The concept of cognitive reserve (CR) refers to the situation when the brain pathology does not correspond to clinical symptoms, i.e. they are absent or weakened in combination with the established clinical diagnosis and/or the prediction of cognitive deficits (e.g. in the aging process). The article discusses the definition of cognitive reserve, methods of its measurement, brain mechanisms of CR, the role of CR in the process of successful aging, debatable issues and reference of the idea of CR to clinical practice.
PL
Koncepcja rezerwy poznawczej (cognitive reserve – CR) odnosi się do sytuacji, w której patologia mózgu nie koresponduje z objawami klinicznymi, tj. są one nieobecne lub słabo nasilone w zestawieniu z postawionym rozpoznaniem klinicznym i/lub przewidywaniem deficytów poznawczych (np. w procesie starzenia się). W artykule omówiono definicję rezerwy poznawczej, sposoby jej pomiaru, mózgowe mechanizmy CR, rolę CR w procesie satysfakcjonującego starzenia się i kwestie dyskusyjne oraz odniesiono ideę CR do praktyki klinicznej.
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