Sleep-Wake Cycles
Stages of Sleep
Understanding Sleep
Insufficient Sleep and Sleep Deprivation
Nightmares and Night Terrors
REM Sleep Behavior Disorder
You might also read
Articles linked to this work by shared authors, journal, and citation graph.
Updated: May 20, 2026

Multi-Modal Home Sleep Monitoring in Older Adults
Published on: January 26, 2019
Xuexue Zhang1, Xujie Wang2, Hua Qu3
1Department of general medicine, Xiyuan Hospital, China Academy of Chinese Medical Sciences, No. 1, xiyuan playground, Zhong Zhi Road, Hai Dian District, Beijing, 100091, China.
Trouble sleeping is increasing in US adults, but medication use remains stable. Optimal sleep duration for adults is 7.5 hours, associated with the lowest risk of sleep difficulties.
Area of Science:
Background:
Purpose of the Study:
Main Methods:
Main Results:
Conclusions: