OBJECTIVE: To evaluate the frequency, determinants and sleep characteristics of lucid dreaming in narcolepsy. SETTINGS: University hospital sleep disorder unit. DESIGN: Case-control study. PARTICIPANTS: Consecutive patients with narcolepsy and healthy controls. METHODS: Participants were interviewed regarding the frequency and determinants of lucid dreaming. Twelve narcolepsy patients and 5...
To test whether mental activities collected from non-REM sleep are influenced by REM sleep, we suppressed REM sleep using clomipramine 50mg (an antidepressant) or placebo in the evening, in a double blind cross-over design, in 11 healthy young men. Subjects were awakened every hour and asked about their mental activity. The marked (81%, range 39-98%) REM-sleep suppression induced by...
Cloistered monks and nuns adhere to a 10-century-old strict schedule with a common zeitgeber of a night split by a 2- to 3-h-long Office (Matins). The authors evaluated how the circadian core body temperature rhythm and sleep adapt in cloistered monks and nuns in two monasteries. Five monks and five nuns following the split-sleep night schedule for 5 to 46 yrs without interruption and 10...