Sleep Med Psychophysiol.  2004 Dec;11(2):73-79.

Digital Polysomnography: The Present and Future

Affiliations
  • 1Department of Psychiatry, Seoul National University Hospital, Seoul, Korea. jeongdu@snu.ac.kr
  • 2Behavioral Science, Seoul National University College of Medicine, and Division of Sleep Studies, Seoul National University Hospital, Seoul, Korea.
  • 3Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Korea.

Abstract

Digital polysomnography was developed to overcome the limitations of Rechtschaffen and Kales rule and to compensate the shortcomings of paper polysomnography. It enables easy access to and secure preservation of sleep records, and provides various displays of sleep data to enhance efficiency of visual scoring of sleep records. Rechtschaffen and Kales rule had been criticized for its ambiguity and lack of considerations in spatial information of EEG. As sleep records are acquired and processed in digital mode, they can be analyzed at microscopic and macroscopic levels. Digital analysis of sleep records provides the basis for development of new sleep measures. Sleep staging in digital polysomnography is based on the various analyses of EEG. Sleep apnea, hypopnea and periodic limb movement are detected automatically by digital analysis of respiratory signals and leg EMG. Digital polysomnography plays a complementary role to visual scoring and compensates the limitations of paper polysomnography. Digital polysomnography, including acquisition, processing and analysis of sleep records in digital mode, can be a great help in the development of sleep medicine, enabling the development of new sleep measures and the exchange of sleep records between sleep laboratories.

Keyword

Digital polysomnography; Signal processing; Polysomnography

MeSH Terms

Brassica
Electroencephalography
Extremities
Leg
Polysomnography*
Sleep Apnea Syndromes
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