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Hypnogram in a patient with Parkinson disease

Sleep hypnogram of a patient with Parkinson disease. Total sleep time is markedly reduced as well as sleep efficiency; frequent and sometimes prolonged infrahypnic awakenings are present throughout the night. All sleep phases are represented; REM latency is increased. (Contributed by Dr. Federica Provini.)

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Associated Disorders

  • Central sleep apnea
  • Obstructive sleep apnea
  • Periodic limb movements