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Related Concept Videos

Sleep-Wake Cycles01:24

Sleep-Wake Cycles

Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and  rapid eye movement (REM).
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
Stages of Sleep01:22

Stages of Sleep

Sleep progresses through distinct stages, each characterized by specific brain wave patterns and physiological responses ranging from wakefulness to stages of non-rapid eye movement, known as non-REM, to rapid eye movement, referred to as REM. Understanding these stages helps in recognizing how sleep supports various bodily and cognitive functions.
Before sleep begins, in wakefulness, the brain exhibits primarily beta waves, which are high in frequency and low in amplitude, indicating alertness...
Understanding Sleep01:11

Understanding Sleep

Sleep, an essential biological state, involves significant reductions in physical activity, sensory awareness, and interaction with the environment. This complex physiological process is primarily regulated by specific brain regions, notably the hypothalamus and pons, which govern the sleep-wake cycle or circadian rhythm.
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
Insufficient Sleep and Sleep Deprivation01:13

Insufficient Sleep and Sleep Deprivation

Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...
Nightmares and Night Terrors01:18

Nightmares and Night Terrors

Nightmares and night terrors represent two distinct types of sleep disturbances that differ in timing, characteristics, and the sleeper's recall of the event. Nightmares are vivid, disturbing dreams that usually awaken the sleeper from REM sleep, a stage of sleep where brain activity is high, and dreams are most frequent. Upon awakening, individuals often have detailed recollections of their nightmares, which can include themes of threats to survival, security, or self-esteem.
Nightmares often...
REM Sleep Behavior Disorder01:15

REM Sleep Behavior Disorder

REM Sleep Behavior Disorder (RBD) is a sleep disorder characterized by the absence of muscle paralysis that normally occurs during the REM phase of sleep. This absence allows individuals to physically act out their dreams, which are often vivid and disturbing. Common behaviors exhibited during episodes include kicking, punching, and yelling. These actions can be dangerous, potentially leading to injuries for the person with RBD or their bed partner.
RBD is significantly associated with...

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Related Experiment Video

Updated: May 20, 2026

Multi-Modal Home Sleep Monitoring in Older Adults
07:40

Multi-Modal Home Sleep Monitoring in Older Adults

Published on: January 26, 2019

Sleep status among adults.

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.

Sleep & Breathing = Schlaf & Atmung
|May 19, 2026
PubMed
Summary
This summary is machine-generated.

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.

Keywords:
NHANESPrescription medication useSleep durationTrouble sleeping

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Area of Science:

  • Public Health
  • Sleep Medicine
  • Epidemiology

Background:

  • Sleep disorders pose a significant public health challenge.
  • This study investigates trends in self-reported sleep issues, duration, and medication use among US adults.

Purpose of the Study:

  • To analyze patterns in self-reported trouble sleeping.
  • To examine sleep duration trends.
  • To assess the utilization of prescription medications commonly used for insomnia (MCUFI).

Main Methods:

  • Utilized data from five cycles of the National Health and Nutrition Examination Survey (NHANES) from 2009-2010 to 2017-2018.
  • Employed cross-sectional study design.
  • Collected self-reported data on sleep trouble and duration from adult participants.

Main Results:

  • Prevalence of self-reported trouble sleeping increased from 24.93% to 30.03% between 2009-2010 and 2017-2018.
  • Sleep duration showed shifts: <7 hours decreased, while ≥9 hours significantly increased; 7-9 hours remained stable.
  • A U-shaped relationship between sleep duration and trouble sleeping was observed, with 7.5 hours identified as optimal. MCUFI use remained steady at 3.72%.

Conclusions:

  • Self-reported trouble sleeping has increased in the US over the past decade.
  • Utilization of medications commonly used for insomnia (MCUFI) has remained consistent.
  • A sleep duration of 7.5 hours is associated with the lowest risk of experiencing trouble sleeping.