Identification of nine distinct sleep composites capturing varied aspects of sleep architecture and quality through comprehensive polysomnography and self-reports.
Longer and more consolidated sleep, along with enhanced slow oscillation-spindle coupling, correlate positively with global cognitive performance.
No significant direct associations were found between the identified sleep composites and the incidence of dementia over median follow-ups spanning 5 to 19 years.
The findings emphasize the need for nuanced approaches to exploring sleep’s multifaceted relationship with brain health and cognitive aging.
