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Related Concept Videos

Sleep Apnea01:21

Sleep Apnea

Sleep apnea is a condition where breathing stops intermittently during sleep, often leading to significant health issues. Each episode can last from 10 to 20 seconds or more and is frequently accompanied by a brief arousal from sleep. This disturbance, largely unnoticed by the individual, can lead to severe daytime fatigue. Commonly, individuals seek help after being informed by their partners about loud snoring and noticeable breathing pauses during sleep.
The condition is more prevalent among...
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:
Narcolepsy01:07

Narcolepsy

Narcolepsy is a chronic sleep disorder characterized by pervasive, uncontrolled sleepiness and other sleep disturbances. One of its hallmark symptoms is an abrupt transition to REM sleep upon falling asleep, which causes symptoms typically associated with this phase to occur unexpectedly during wakefulness. These include the following symptoms, which typically last from a minute or two to half an hour.
Sleepwalking and Sleep Talking01:17

Sleepwalking and Sleep Talking

Somnambulism, commonly known as sleepwalking, involves individuals engaging in activities ranging from simple walking to more complex behaviors such as driving. Sleepwalking typically occurs during the slow-wave sleep stages 3 and 4 early in the night when the person is not dreaming, contradicting the myth that sleepwalkers are acting out their dreams.
Factors that increase the likelihood of sleepwalking include sleep deprivation and alcohol consumption. Contrary to common beliefs, it is safe...
Physical Assessment of the Respiratory Tract IV: Auscultation01:28

Physical Assessment of the Respiratory Tract IV: Auscultation

Auscultation is a crucial component of the physical assessment of the respiratory tract. It offers valuable insights into airflow through the bronchial tree and potential lung obstructions. This process involves careful listening to breath, voice, and adventitious sounds, which can reveal a wealth of information about a patient's respiratory health.
Breath Sounds
Breath sounds are categorized into vesicular, bronchovesicular, and bronchial.
Other Factors Affecting Respiration Centers01:17

Other Factors Affecting Respiration Centers

Breathing is primarily an involuntary activity regulated by the brainstem respiratory centers. However, it can also be consciously controlled, allowing us to hold our breath or take deeper breaths when needed. This voluntary control is facilitated by the cerebral motor cortex, which bypasses the medullary centers to stimulate the respiratory muscles directly.
However, the ability to hold one's breath voluntarily is not limitless. When the CO2 concentration in the blood reaches a critical level,...

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Related Experiment Video

Updated: May 12, 2026

Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice
10:56

Quantifying Infra-slow Dynamics of Spectral Power and Heart Rate in Sleeping Mice

Published on: August 2, 2017

Do snoring sounds arouse the snorer?

Naricha Chirakalwasan1, Deborah L Ruzicka, Joseph W Burns

  • 1Sleep Disorders Center and Department of Neurology, University of Michigan, Ann Arbor, MI, USA.

Sleep
|April 9, 2013
PubMed
Summary
This summary is machine-generated.

Earplugs reduced respiratory cycle-related electroencephalographic (EEG) changes (RCREC) in delta frequencies, suggesting snoring perception influences sleep cortical activity. However, the effect was small and did not explain the primary cause of RCREC in obstructive sleep apnea (OSA).

Keywords:
PolysomnographyRCRECcomputer-assisted signal processingearplugsobstructive sleep apnearespiratory cycle-related EEG changessnoringsound

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Area of Science:

  • Sleep Medicine
  • Neurophysiology
  • Respiratory Medicine

Background:

  • Respiratory cycle-related electroencephalographic changes (RCREC) are linked to microarousals and increased work of breathing in obstructive sleep apnea (OSA).
  • The role of snoring perception in generating these EEG changes remains unclear.

Purpose of the Study:

  • To investigate if snoring sounds contribute to RCREC.
  • To determine if earplugs, by altering snoring perception, can affect RCREC.

Main Methods:

  • Randomized controlled trial involving 400 adults suspected of having OSA.
  • Participants were assigned to use earplugs or not during polysomnography.
  • EEG changes were analyzed in relation to respiratory cycles and earplug use.

Main Results:

  • Earplug use was associated with reduced delta frequency RCREC (P = 0.048).
  • This effect was more pronounced in men and possibly nonobese individuals.
  • No significant modulation of earplug effect by OSA severity or snoring prominence was observed.

Conclusions:

  • This study demonstrates that snoring perception, influenced by earplugs, can affect cortical EEG during sleep.
  • The observed effect on delta RCREC was small and did not significantly alter based on OSA severity or snoring prominence.
  • Perception of snoring is unlikely to be the primary driver of RCREC in OSA.