Journal
NEUROSCIENCE AND BIOBEHAVIORAL REVIEWS
Volume 127, Issue -, Pages 675-688Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neubiorev.2021.05.010
Keywords
Sleep quality; Episodic memory; Aging; PSG; Actigraphy; Self-report
Categories
Funding
- National Science Foundation [1850802]
- Ruth L. Kirschstein National Research Service Award (NRSA) Institutional Research Training Grant from the National Institutes of Health (National Institute on Aging) [5T32AG000175]
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Better sleep quality is associated with better episodic memory performance in young adults. However, the strength of sleep-memory associations in aging has not been well characterized. Factors such as sleep measurement method, sleep parameters, and memory task characteristics may impact the strength of these associations. Across age groups, sleep-memory associations were similar for different sleep measurement methods, but age moderated associations for certain sleep parameters, showing that age impacts the specific sleep correlates contributing to these relationships.
Better sleep quality has been associated with better episodic memory performance in young adults. However, the strength of sleep-memory associations in aging has not been well characterized. It is also unknown whether factors such as sleep measurement method (e.g., polysomnography, actigraphy, self-report), sleep parameters (e. g., slow wave sleep, sleep duration), or memory task characteristics (e.g., verbal, pictorial) impact the strength of sleep-memory associations. Here, we assessed if the aforementioned factors modulate sleep-memory relationships. Across age groups, sleep-memory associations were similar for sleep measurement methods, however, associations were stronger for PSG than self-report. Age group moderated sleep-memory associations for certain sleep parameters. Specifically, young adults demonstrated stronger positive sleep-memory associations for slow wave sleep than the old, while older adults demonstrated stronger negative associations between greater wake after sleep onset and poorer memory performance than the young. Collectively, these data show that young and older adults maintain similar strength in sleep-memory relationships, but age impacts the specific sleep correlates that contribute to these relationships.
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