Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan


  • Alan WeintraubEmail author
  • John Whyte
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_61


Polysomnography (PSG) is a multimodality diagnostic assessment tool used to evaluate sleep-related disturbances. PSG consists of simultaneous recording of multiple physiologic parameters. Presently, laboratory-based nocturnal (nighttime) PSG is considered the standard for the diagnosis of obstructive sleep apnea syndrome (OSAS). PSG is also useful to evaluate other abnormalities of sleep and/or wakefulness directly but also can diagnose other physiological disorders that will have the same type of impact.

Current Knowledge

Polysomnography is used to assess a variety of sleep-related disorders, including but not limited to insomnias, parasomnias, obstructive/central sleep apnea, nocturnal seizures or myoclonus, narcolepsy, sleep disordered breathing, restless leg syndrome, and periodic limb movement disorder. It is traditionally performed by having the patient or subject spend the night in a sleep laboratory, but scaled-down evaluations are increasingly conducted in patients’...

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References and Readings

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Craig Hospital, Rocky Mountain Regional Brain Injury SystemEnglewoodUSA
  2. 2.Moss Rehabilitation Research InstituteAlbert Einstein Healthcare NetworkElkins ParkUSA