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The intermediate stage of sleep in mice
Physiology & Behavior, 1991Seven mice of Balb/C strain were implanted with electrodes to perform sleep-waking recordings. In 100% of the cases, the mice showed, prior to paradoxical sleep, the intermediate stage of sleep characterized by high-amplitude cortical spindles interspersed with slow waves and low-frequency theta rhythm in the dorsal hippocampus.
L, Glin +5 more
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Computer-assisted sleep staging
IEEE Transactions on Biomedical Engineering, 2001To address the subjectivity in manual scoring of polysomnograms, a computer-assisted sleep staging method is presented in this paper. The method uses the principles of segmentation and self-organization (clustering) based on primitive sleep-related features to find the pseudonatural stages present in the record.
Rajeev Agarwal, Jean Gotman
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Stage 4 Sleep in Schizophrenia
Archives of General Psychiatry, 1969THE stage 4 EEG (employing the Dement and Kleitman 1 nomenclature) of sleep, as measured in our laboratory, consists of high-voltage (over 50V) slow (under 4 cycles per second) activity occurring with a stipulated density (over 16 waves per 20second epoch, or over 50% of the epoch occupied by such slow waves).
I, Feinberg +3 more
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State Measures and Sleep Stages
Psychological Reports, 1983The present study examines the relationship between sleep and mood variables in an aging (50- to 60-yr.-old) sample of 36 males and 39 females. Data from two nights of sleep recordings were correlated with 5 mood scales from the Lorr Mood test administered 1/2 hr. prior to bedtime on the second night. 18 sleep variables were analyzed. Correlations from
D T, Berry, W B, Webb
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Relationship of Nocturnal Bronchoconstriction to Sleep Stages [PDF]
American Review of Respiratory Disease, 1989 Abstract The possible role of sleep stages in the pathogenesis of nocturnal asthmatic attacks is still under debate because previous studies suffered methodologic limitations that prevented the possibility of providing a clear-cut answer to the question.
Bellia V +4 more
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Effects of lovastatin and pravastatin on sleep efficiency and sleep stages
Clinical Pharmacology and Therapeutics, 1991The effects on sleep of two 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors (40 mg lovastatin and 40 mg pravastatin) were evaluated in 12 normal subjects in a double-blind placebo-controlled sleep laboratory study. Subjects were randomly assigned to each of two parallel groups (lovastatin and pravastatin).
A N, Vgontzas +4 more
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Effect of ritanserin on sleep stages and sleep EEG in the rat
European Journal of Pharmacology, 1988Ritanserin (1.0 and 2.5 mg/kg i.p.) was administered to rats before the start, of the light period, and sleep was recorded during the subsequent 12 h. The higher dose reduced sleep in the first 3 h. Both doses caused a more prolonged suppression of REM sleep.
Borbély AA, Trachsel L, Tobler I
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Effects of Sleep and Sleep Stage on Epileptic and Nonepileptic Seizures
Epilepsia, 1997Summary: Purpose: Previous studies of patients with epilepsy and animal models of epilepsy suggest that sleep increases the frequency, duration, and secondary generalization of seizures. This information is, however, incomplete. Methods: We retrospectively examined video‐EEG monitoring reports from our comprehensive epilepsy center.
C W, Bazil, T S, Walczak
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Sleeping Beauties: Shakespeare, Sleep and the Stage
The Cambridge Quarterly, 2006A great deal has been written about dreams in literature and drama, but very little about sleep. Cornelia Parker's 1995 exhibition The Maybe raised questions about the figure of the sleeping woman in visual, verbal and dramatic art. Excluded from the consciousness of the undreaming subject, audiences turn instead to the impact of her physical presence,
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Plasma Testosterone and Sleep: Relationship to Sleep Stage Variables
Psychosomatic Medicine, 1982A study was performed to determine whether the pattern of secretion of testosterone (T) during the night bears a systematic relationship to the cyclically recurring periods of rapid eye movement (REM) and non-REM (NREM) sleep. In four healthy male volunteers, 10-20 min sampling of plasma for T was carried out through a long indwelling catheter in ...
H P, Roffwarg +3 more
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