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Neuropsychological function in mild sleep-disordered breathing

S Redline1, M E Strauss, N Adams

  • 1Department of Medicine, Case Western Reserve University, Cleveland VA Medical Center, Ohio, USA.

Sleep
|February 1, 1997
PubMed
Summary
This summary is machine-generated.

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Mild sleep disordered breathing (SDB) impairs vigilance and working memory even without significant sleepiness. This study found deficits in visual vigilance and memory tasks for individuals with mild SDB.

Area of Science:

  • Neuroscience
  • Sleep Medicine
  • Psychology

Background:

  • Severe sleep disordered breathing (SDB) is linked to neuropsychological deficits.
  • The impact of mild SDB on cognitive function remains largely unknown.

Purpose of the Study:

  • To compare neuropsychological performance between individuals with mild SDB and healthy controls.
  • To investigate if mild SDB affects vigilance, working memory, and executive functions in the absence of significant sleepiness.

Main Methods:

  • Two groups of volunteers were screened: controls (Respiratory Disturbance Index [RDI] < 5) and cases (RDI 10-30).
  • Participants were matched for IQ, age, and sex.
  • An extensive battery of neuropsychological tests was administered after an overnight sleep study.

Related Experiment Videos

Main Results:

  • Individuals with mild SDB performed significantly worse on a visual vigilance task (perceptual sensitivity) compared to controls.
  • Mild SDB also led to poorer performance on a working memory test (Wechsler adult intelligence scale-revised digits backwards test).
  • No significant differences were observed in other memory, information processing, or executive functioning tests.

Conclusions:

  • Mild SDB can cause vigilance deficits without causing substantial sleepiness.
  • Individuals with mild SDB and mildly elevated RDI (10-30) do not show deficits in complex neuropsychological processes like executive functions.