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- W2064682255 endingPage "507" @default.
- W2064682255 startingPage "491" @default.
- W2064682255 abstract "Aging is associated with declines in episodic memory. In this study, the authors used a path analysis framework to explore the mediating role of differences in brain structure, executive functions, and processing speed in age-related differences in episodic memory. Measures of regional brain volume (prefrontal gray and white matter, caudate, hippocampus, visual cortex), executive functions (working memory, inhibitory control, task switching, temporal processing), processing speed, and episodic memory were obtained in a sample of young and older adults. As expected, age was linked to reduction in regional brain volumes and cognitive performance. Moreover, neural and cognitive factors completely mediated age differences in episodic memory. Whereas hippocampal shrinkage directly affected episodic memory, prefrontal volumetric reductions influenced episodic memory via limitations in working memory and inhibitory control. Age-related slowing predicted reduced efficiency in temporal processing, working memory, and inhibitory control. Lastly, poorer temporal processing directly affected episodic memory. No direct effects of age on episodic memory remained once these factors were taken into account. These analyses highlight the value of a multivariate approach with the understanding of complex relationships in cognitive and brain aging." @default.
- W2064682255 created "2016-06-24" @default.
- W2064682255 creator A5026479455 @default.
- W2064682255 creator A5050123984 @default.
- W2064682255 creator A5051058343 @default.
- W2064682255 creator A5075845832 @default.
- W2064682255 date "2008-07-01" @default.
- W2064682255 modified "2023-10-17" @default.
- W2064682255 title "Neuroanatomical and cognitive mediators of age-related differences in episodic memory." @default.
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