Journal ArticleDOI
The relationship between objective sleep variables and subjective sleep estimation in schizophrenia
Vadim S. Rotenberg,P. Indurski,R. Kimhi,J. Hadjez,Y. Gutman,Eyal Shamir,Yoram Barak,Avner Elizur +7 more
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TLDR
A high positive correlation was shown between objective sleep latency and its subjective estimation; a positive correlation between subjective estimation of sleep depth and percentage of slow wave sleep; and a negative correlation between eye movement and wakefulness during the night.Abstract:
AIM: Few investigations of sleep structure in schizophrenia have concentrated on the relationship between objective and subjective sleep variables. The aim of this study was to assess objective sleep variables and subjective estimation of sleep duration and sleep quality. METHODS: Polysomnography was performed in 20 chronic patients with schizophrenia during three consecutive nights. After final awakenings subjects answered questions concerning subjective estimations of sleep duration, sleep latency, number of awakenings, and sleep depth. Pearson correlations between ranged subjective reports and objective sleep variables were performed. RESULTS: The results showed a high positive correlation between objective sleep latency and its subjective estimation; a positive correlation between subjective estimation of sleep depth and percentage of slow wave sleep (SWS%); a positive correlation between eye movement (EM) density and subjective estimation of wakefulness during the night; and a negative correlation be...read more
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Quality of sleep in patients with schizophrenia is associated with quality of life and coping
TL;DR: The results are consistent with the hypotheses that poor sleep may play a unique role in sustaining poor quality of life and impaired coping in patients with schizophrenia and these associations may hold for community controls as well.
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Attachment, sleep quality, and depressed affect.
TL;DR: This paper examined the role of attachment insecurity in sleep problems among married adults (N=78 couples) and found that attachment anxiety was associated with higher levels of self-reported sleep difficulties for men and women, whereas attachment avoidance was not.
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The relationship between subjective sleep estimation and objective sleep variables in depressed patients
TL;DR: Slow wave sleep in depression has a positive influence on the subjective feeling of sleep duration while phasic REM sleep activity has a negative influence.
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Older schizophrenia patients have more disrupted sleep and circadian rhythms than age-matched comparison subjects
TL;DR: The sleep and circadian rhythm disruption of older schizophrenia patients was more extensive than that of matched NCS suggesting patients' sleep disruption was above and beyond what is attributable to advanced age alone.
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CLOCK gene T3111C polymorphism is associated with Japanese schizophrenics: A preliminary study
TL;DR: The results suggest that the T3111C polymorphism of the CLOCK gene is associated with schizophrenia.
References
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Evidence for a directional correspondence between eye movements and dream imagery in REM sleep.
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Matcheri S. Keshavan,Jay W. Pettegrew,Charles F. Reynolds,Kanaga S. Panchalingam,Debra M. Montrose,Jean M. Miewald,David J. Kupfer +6 more
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Polysomnographic characteristics of schizophrenia in comparison with mania and depression
James I. Hudson,James I. Hudson,Joseph F. Lipinski,Joseph F. Lipinski,Paul E. Keck,Paul E. Keck,Harlyn G. Aizley,Harlyn G. Aizley,Alexander Vuckovic,Alexander Vuckovic,Kimberly C. Zierk,Kimberly C. Zierk,Harrison G. Pope,Harrison G. Pope +13 more
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Journal ArticleDOI
A quantitative sleep-EEG study on the effects of benzodiazepine and zopiclone in schizophrenic patients
Naofumi Kajimura,Masaaki Kato,Teruo Okuma,Masanori Sekimoto,Tsuyoshi Watanabe,Kiyohisa Takahashi +5 more
TL;DR: Results suggest that reduction of SWS in schizophrenia may be attributable mainly to the decrease in the number of delta waves with higher amplitude and that ZPC may induce deeper sleep in schizophrenics than BZDs.
Journal ArticleDOI
Rem sleep in depressed patients: Different attempts to achieve adaptation
Vadim S. Rotenberg,Leonid Kayumov,P. Indursky,J. Hadjez,R. Kimhi,Pinkhas Sirota,A. Bichucher,Avner Elizur +7 more
TL;DR: In depressed patients with the "first night effect" the enhanced REM sleep requirement is satisfied not only by an increased REM sleep duration but also by the improved REM sleep quality that is crucial for adaptation.