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Polysomnography (sleep study)

Polysomnography, also called as sleep study, is a test used to diagnose sleep disorders. It records your brain waves, oxygen levels in your blood, heart rate and breathing, as well as eye and leg movements during the study. This test records your nighttime sleep patterns.

Why it's done

Polysomnography monitors your sleep stages (NREM and REM) and cycles to identify if or when your sleep patterns are disrupted and why.

Our doctor may recommend polysomnography if he or she suspects you have:
  • Sleep apnea
  • Periodic limb movement disorder
  • Narcolepsy
  • REM sleep behavior disorder
  • Unusual behaviors during sleep
  • Unexplained chronic insomnia
While you sleep, our technologist monitors your:
  • Brain waves
  • Eye movements
  • Heart rate
  • Breathing pattern
  • Blood oxygen level
  • Body position
  • Chest and abdominal movement
  • Limb movement
  • Snoring and other noise you may make as you sleep