Nature Aging
Older adults had weaker brain fluid flow waves during sleep
Nighttime scans of 31 young and 41 older adults linked reduced fluid flow to weaker waves of brain activity and blood-volume change.Nighttime scans of 31 young and 41 older adults linked reduced fluid flow to weaker waves of brain activity and blood-volume change.
Cross-sectional studySLEEP
Who was studiedYoung and older adults, against younger adults
What changedBrain fluid wave power rose less from wakefulness to sleep in older adults: 1.15 dB against 3.82 dB in younger adults
The catchBlood pressure, hydration and sleep deprivation history were unmeasured and could affect fluid flow