Effects of different sleep duration on delta sleep in recovery nights

Author(s): Devoto, A., Violani, C., Mastracci, P., Bertini, M.

Journal/Book: Psychophysiology. 1997; 34: 1010 Vermont Ave NW, Suite 1100, Washington, DC 20005. Soc Psychophysiol Res. 227-233.

Abstract: The study assessed the effects of different amounts of sleep restriction on slow wave sleep (SWS) in the ensuing recovery nights. After one adaptation night and an 8-hr baseline night, six healthy men were individually studied during and following five nights in which sleep was reduced to 5, 4, 3, 2, and 1 hr with a 1-week interval between conditions. Each sleep reduction was followed by an 8-hr recovery night. Finally, a second 8-hr baseline night was recorded. A trend analysis revealed that SWS amount in recovery nights increases with decreasing previous sleep duration. Regression analyses showed that, within each participant, the rebound of SWS after a sleep reduction is predicted better by the total duration of sleep than by the specific amount of SWS lost.

Note: Review Lucidi F, Univ Roma La Sapienza, Dipartimento Psicol, Via Dei Marsi 78, I-00185 Rome, ITALY

Keyword(s): delta sleep; sleep reduction; sleep regulation; SWS rebound; SLOW-WAVE SLEEP; EYE-MOVEMENT DENSITY; EEG POWER-DENSITY; ACUTE DEPRIVATION; HZ EEG; ELECTROENCEPHALOGRAMS; WAKEFULNESS; SUPPRESSION; DYNAMICS; CYCLE

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