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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.
D T, Berry, W B, Webb
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2011
Wakefulness (stage W) is characterized by the “alpha” rhythm, so named because it was the first electroencephalogram (EEG) rhythm discovered. Alpha frequency activity is 8–13 cycles/s and may be recorded anywhere in the brain. Alpha rhythm, however, has come to signify the sinusoidal resting rhythm of the occipital cortex.
Hrayr P. Attarian, Nidhi S. Undevia
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Wakefulness (stage W) is characterized by the “alpha” rhythm, so named because it was the first electroencephalogram (EEG) rhythm discovered. Alpha frequency activity is 8–13 cycles/s and may be recorded anywhere in the brain. Alpha rhythm, however, has come to signify the sinusoidal resting rhythm of the occipital cortex.
Hrayr P. Attarian, Nidhi S. Undevia
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Bioradiolocation-based sleep stage classification
2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2016This paper presents a method for classifying wakefulness, REM, light and deep sleep based on the analysis of respiratory activity and body motions acquired by a bioradar. The method was validated using data of 32 subjects without sleep-disordered breathing, who underwent a polysomnography study in a sleep laboratory.
Alexander, Tataraidze +5 more
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Sleep Stage Deprivation and Total Sleep Loss: Effects On Sleep Behavior
Psychophysiology, 1975ABSTRACTThe combined effects of total sleep loss and the deprivation of stage 4 or stage REM were studied in I two separate experiments. Two full nights or sleep loss preceded stage 4 deprivation or stage REM deprivation in Experiment 1 (N=12); 1 full night of sleep loss followed 3 nights or stage 4 deprivation or stage REM deprivation in Experiment 2 (
J M, Moses +3 more
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Sleep learning during stage 2 and REM sleep
Biological Psychology, 1979Pairs of subjects were presented with a 20-item picture series at bedtime. In the latter part of the night, a tape-recorded series of 10 words, the verbal equivalent of half the original series of pictures, was repeated 10 times during either Stage 2 or REM sleep.
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Sleep stage classification is crucial for diagnosing sleep disorders, yet traditional manual scoring methods are labor-intensive and error-prone. This chapter presents an overview of automated sleep stage classification systems, focusing on integrating nature-inspired optimization algorithms to improve classification accuracy.
Rajiv Iyer +3 more
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Rajiv Iyer +3 more
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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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