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dc.contributor.authorMahon, P
dc.contributor.authorGreene, B R
dc.contributor.authorLynch, E M
dc.contributor.authorMcNamara, B
dc.contributor.authorShorten, G D
dc.date.accessioned2012-02-03T15:16:05Z
dc.date.available2012-02-03T15:16:05Z
dc.date.issued2012-02-03T15:16:05Z
dc.identifier.citationAnaesthesia. 2008 Dec;63(12):1309-13.en_GB
dc.identifier.issn1365-2044 (Electronic)en_GB
dc.identifier.issn0003-2409 (Linking)en_GB
dc.identifier.pmid19032298en_GB
dc.identifier.doi10.1111/j.1365-2044.2008.05675.xen_GB
dc.identifier.urihttp://hdl.handle.net/10147/209245
dc.description.abstractSUMMARY: In this prospective observational study we examined the potential of the spectral entropy measures 'state' and 'response' entropy (Entropy monitor), as measures of sleep depth in 12 healthy adult subjects. Both median state and response entropy values varied significantly with sleep stage (p = 0.017 and p = 0.014 respectively; ANOVA). Median state or response entropy did not decrease significantly during the transition from awake to stage I sleep (p > 0.017). State entropy values decreased significantly between sleep stages I and II (p < 0.001). Both state and response entropy values were significantly less (40 and 45 arbitrary units respectively) in stage III (slow wave sleep) vs stage II sleep (p = 0.008). We conclude that state and response entropy values, when expressed as a function of time, may be a useful means of quantifying aspects of sleep.
dc.language.isoengen_GB
dc.subject.meshAdolescenten_GB
dc.subject.meshAdulten_GB
dc.subject.meshElectroencephalography/methodsen_GB
dc.subject.meshEntropyen_GB
dc.subject.meshFemaleen_GB
dc.subject.meshHumansen_GB
dc.subject.meshMaleen_GB
dc.subject.meshMiddle Ageden_GB
dc.subject.meshPolysomnography/*methodsen_GB
dc.subject.meshProspective Studiesen_GB
dc.subject.mesh*Signal Processing, Computer-Assisteden_GB
dc.subject.mesh*Sleep Stagesen_GB
dc.subject.meshYoung Adulten_GB
dc.titleCan state or response entropy be used as a measure of sleep depth?en_GB
dc.contributor.departmentDepartment of Anaesthesia and Intensive Care Medicine, Cork University Hospital, and University College Cork, Cork, Ireland. rsimahon@hotmail.comen_GB
dc.identifier.journalAnaesthesiaen_GB
dc.description.provinceMunster
html.description.abstractSUMMARY: In this prospective observational study we examined the potential of the spectral entropy measures 'state' and 'response' entropy (Entropy monitor), as measures of sleep depth in 12 healthy adult subjects. Both median state and response entropy values varied significantly with sleep stage (p = 0.017 and p = 0.014 respectively; ANOVA). Median state or response entropy did not decrease significantly during the transition from awake to stage I sleep (p > 0.017). State entropy values decreased significantly between sleep stages I and II (p < 0.001). Both state and response entropy values were significantly less (40 and 45 arbitrary units respectively) in stage III (slow wave sleep) vs stage II sleep (p = 0.008). We conclude that state and response entropy values, when expressed as a function of time, may be a useful means of quantifying aspects of sleep.


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