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Related Concept Videos

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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.
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Affective brain areas and sleep-disordered breathing.

Ronald M Harper1, Rajesh Kumar1, Paul M Macey2

  • 1Department of Neurobiology, David Geffen School of Medicine at UCLA, University of California at Los Angeles, Los Angeles, CA, USA; Brain Research Institute, University of California at Los Angeles, Los Angeles, CA, USA.

Progress in Brain Research
|April 22, 2014
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Summary

Sleep-disordered breathing causes neural damage in brain areas regulating breathing, emotions, and autonomic functions. This damage, evident in structural MRI, impacts cardiovascular, cognitive, and mood regulation.

Keywords:
brainstemcongenital central hypoventilation syndromeheart failurehypothalamusmagnetic resonance imagingmedullaobstructive sleep apnea

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Area of Science:

  • Neuroscience
  • Cardiovascular Science
  • Sleep Medicine

Background:

  • Sleep-disordered breathing (SDB) encompasses conditions like obstructive sleep apnea and congenital central hypoventilation syndrome (CCHS).
  • SDB leads to hypoxia, reduced perfusion, and neural injury in critical brain regions.
  • These affected areas govern emotional drives, breathing, and cardiovascular regulation.

Purpose of the Study:

  • To investigate the neural damage associated with SDB.
  • To identify specific brain structures affected by SDB.
  • To understand the functional consequences of this neural damage on autonomic, cognitive, and emotional regulation.

Main Methods:

  • Structural magnetic resonance imaging (MRI) was used to assess tissue integrity.
  • Functional MRI evaluated brain responses to ventilatory and autonomic challenges.
  • Analysis focused on identifying patterns of injury, including tissue loss and diffusion changes.

Main Results:

  • MRI revealed tissue loss, altered water content, and impaired axonal integrity in specific brain areas.
  • Damage was predominantly unilateral and affected regions such as the insular cortex, hypothalamus, and ventrolateral medulla.
  • Functional MRI showed distorted responses in affected areas, indicating impaired neural processing.
  • In CCHS, injury to the locus coeruleus was noted, potentially affecting arousal and mood.

Conclusions:

  • SDB causes significant neural damage impacting multiple brain structures.
  • This damage leads to major distortions in autonomic, cognitive, and emotional regulation.
  • The findings highlight the widespread consequences of SDB beyond respiratory control, affecting overall physiological and psychological well-being.