Cohort Studyhigh evidence
Association of Sleep Variables With Cognitive Performance and the Risk of Dementia in the Sleep and Dementia Consortium.
Neurology·August 25, 2026·PMID 42525904
Why it mattersSleep is a modifiable factor often targeted in brain health, yet which specific sleep features matter most remains unclear. This data-driven analysis suggests that sleep consolidation and specific sleep microarchitecture (slow oscillation-spindle coupling) correlate with cognitive performance, helping clinicians focus on measurable sleep metrics when counseling patients about sleep and brain aging.
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