Nocturnal activity and sleep assessment
- 31 December 1996
- journal article
- Published by Elsevier BV in Clinical Psychology Review
- Vol. 16 (3), 197-213
- https://doi.org/10.1016/0272-7358(95)00059-3
Abstract
Sleep occupies approximately one third of our lives yet its modern study has largely been restricted to the use of the polygraph and to self-report via sleep logs. Actigraphy is a method for obtaining objective behavioral samples of nocturnal as well as diurnal activity. Activity is continuously measured and recorded in memory at user specified intervals, usually 1 minute, 24-hours a day for days and weeks if desired. This review concentrates on studies validating actigraphy for sleep assessment and briefly addresses applications to DSM-IV sleep disorders. Sleep onset is a continuous rather than discrete event. A five phase Sleep-Onset Spectrum is discussed and actigraphy is validated within this context.Keywords
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