The few studies that have examined the association between usual sleep duration and
cognitive function have shown conflicting results. This cross‐sectional study examined the …

Objective We aimed to investigate the association between nocturnal sleep duration,
changes in nocturnal sleep duration and cognitive impairment in older adults. Methods 4010 …

Background The aim was to investigate the association between sleep disturbances and
cognitive function in younger and older individuals from an ageing population. Methods …

Alterations in sleep patterns are common among older adults; further, short and long sleep
durations have been linked with impaired cognitive performance in older individuals. Yet …

Objectives In older adults, both short and long sleep duration are associated with lower
cognitive function, suggesting an inverted U-shaped association between sleep duration …

Context: Increasing evidence suggests that circadian and sleep parameters influence
cognitive function with aging. Objective: To evaluate observational studies of sleep duration …

Objectives: Previous studies have indicated that improvement in sleep duration might
correlate with better cognition. We aimed to examine the associations between changes in …

OBJECTIVE: Some epidemiological data are available on the association between sleep
duration and sleep quality, sleep complaints, and the aging related cognitive impairment in …

Abstract Study Objectives: Evidence from cross-sectional studies shows that sleep is
associated with cognitive function. This study examines change in sleep duration as a …

The prevalence of insomnia increases with age. Short sleep duration is associated with
deficits in cognitive performance. We hypothesized that short sleep duration and sleep …