Time-variant spectral analysis of the heart rate variability during sleep in healthy and obstructive sleep apnoea subjects
origen: scopus
related by: authorship_47140
type: Thing
type: Information Content Entity
type: Conference Paper
type: Continuant
estado: published
related by: authorship_47138
type: Entity
type: Generically Dependent Continuant
crisid: 7385
freetext keyword: Cardiology; Regression analysis; Sleep research; Spectrum analysis; Spectrum analyzers; Speech; Alternative approach; Auto-regressive; Autoregressive model; Efficient computation; Forgetting factors; Heart Rate Variability; High resolutions; Low-activation; Model order; Obstructive sleep apnoea; Sleep stages; Spectral analyses; Spectral indices; Spectral parameters; Time-variant; Total power; Heart valve prostheses
most specific type: Conference Paper
EI dscopus: 2-s2.0-50149086690
artnum: 4511958
related by: authorship_47141
has publication venue: Computers in Cardiology
abstract: A time-variant autoregressive approach was used in order to evaluate the spectral parameters of the heart rate variability (HRV), through the all sleep stages, in both normal subjects and patients with severe obstructive sleep apnoea. Recordings coming from five normal and five pathologic subjects were analyzed in the study. The parameters of the autoregressive model were fixed for the entire night recordings: model order = 8 and forgetting factor = 0.98. The classical spectral indexes of the Heart Rate Variability were normalized respect to the total power. The results in this study showed, in normal subjects, an increment in the HFn components in NREM, while pathologic subjects presented a reduced activity in this component in all the time, which suggest a low activation of the vagal nerve. Furthermore, in both groups of subjects, VLFn reached high levels during REM and wake than NREM. In conclusion, this method could offer an alternative approach, with high resolution and efficient computation in the spectral decompotition, in order to develop a classification of sleep stage and apnoea detectors from the HRV.
type: Article
type: Document
page end: 744
date time value: conference paper date 7385
volume: 33
most specific type: Document
related by: authorship_47137
page start: 741
related by: authorship_47139

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Computers in Cardiology
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publication venue for: Time-variant spectral analysis of the heart rate variability during sleep in healthy and obstructive sleep apnoea subjects
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Generically Dependent Continuant
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RDF description of Time-variant spectral analysis of the heart rate variability during sleep in healthy and obstructive sleep apnoea subjects - http://orbis.uaslp.mx/vivo/individual/scopus7384
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date: 2026-08-27T05:19:46
publisher: vivo
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Conference Paper
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