Computer analysis of polysomnographic data

S. Uchida*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Polysomnogram measures electroencephalogram (EEG), electrooculogram (EOG) and chin electromyogram (EMG) to monitor ever-changing brain state during sleep. Polysomnigraphic records are usually scored visually according to Rechtschaffen and Kales' manual. However, scoring more than 1400 pages of record is very time consuming. Therefore, automated scorer has been awaited. However, when a computer makes a hypnogram, it uses a lot of parameters, such as alpha rhythm, sleep spindles, sleep delta waves, rapid eye movements or tonic chin EMG levels. Continuous across night patterns of these parameters provide more important and detailed physiological information than that provided by hypnogram. In this article, the author reviewed analysis methods for EEG, EOG and EMG and discussed the importance of examining continuous across night patterns of sleep parameters.

Original languageEnglish
Pages (from-to)493-498
Number of pages6
JournalNippon rinsho. Japanese journal of clinical medicine
Issue number2
Publication statusPublished - 1998
Externally publishedYes


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