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  • Title: Effects of sleep deprivation on daytime sleepiness in primary insomnia.
    Author: Stepanski E, Zorick F, Roehrs T, Roth T.
    Journal: Sleep; 2000 Mar 15; 23(2):215-9. PubMed ID: 10737338.
    Abstract:
    STUDY OBJECTIVES: This study investigated changes in MSLT scores and recovery sleep following total sleep deprivation in subjects with insomnia as compared to normal sleepers. DESIGN: Matched-groups design. SETTING: A sleep disorders center in a large medical center. PARTICIPANTS: Ten individuals with psychophysiological insomnia and ten age- and sex-matched normal sleepers served as subjects. INTERVENTIONS: Subjects underwent total sleep deprivation after baseline polysomnography and MSLT. A post-deprivation MSLT was obtained, as well as polysomnography on the recovery night and an MSLT after the recovery night. MEASUREMENTS AND RESULTS: Both groups showed significant decreases in MSLT scores following total sleep deprivation, as compared to baseline. Both groups had significantly shorter scores on a nighttime MSLT compared to a daytime MSLT. The insomnia group also showed a significant increase in total sleep time on the recovery night compared to baseline. CONCLUSIONS: The MSLT is sensitive to changes in sleepiness associated with total sleep deprivation in individuals with primary insomnia.
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