On arousal from sleep: time-frequency analysis

被引：29

作者：

Mendez, M. O. ^{[1
]}

Bianchi, A. M. ^{[1
]}

Montano, N. ^{[2
]}

Patruno, V. ^{[3
]}

Gil, E. ^{[4
]}

Mantaras, C. ^{[5
]}

Aiolfi, S. ^{[3
]}

Cerutti, S. ^{[1
]}

机构：

[1] Politecn Milan, Dept Biomed Engn, I-20133 Milan, Italy

[2] Univ Milan, Osped L Sacco, Dept Clin Sci, Milan, Italy

[3] Osped Maggiore Crema CR, Osped S Marta, Hosp Unit Resp Rehabil, Rivolta Dadda, Italy

[4] Univ Zaragoza, Commun Technol Grp, Zaragoza, Spain

[5] Univ Nacl Entre Rios, Fac Ingn, Dept Biomed Engn, Parana, Argentina

来源：

MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING | 2008年 / 46卷 / 04期

关键词：

heart rate variability; arousal from sleep; time-frequency distributions; sleep fragmentation; autonomic nervous system;

D O I：

10.1007/s11517-008-0309-z

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Time-frequency analysis of the heart rate variability during arousal from sleep, with and without EMG activation, coming from five obese healthy subjects was performed. Additionally, a comparative analysis of three time-frequency distributions, smooth pseudo Wigner-Ville (SPWVD), Choi-Williams (CWD) and Born-Jordan distribution (BJD) is presented in this study. SPWVD showed higher capacity for eliminating the cross terms independently of the signal. After applying Hilbert transformation to real signals BJD and CWD lost some important mathematic properties as marginals, on the contrary PSWVD remains unchanged. BJD showed results comparable with CWD. During arousal episodes, analogous energy distribution and spectral indexes were obtained by the three time-frequency representations. Arousals with chin activity presented stronger changes in RR intervals and LF (related to sympathetic activity) component, being statistically different with respect to arousal without chin activity, only around the period of maximum change in beta activity on the EEG. These results suggest a more evident stress for the heart when an arousal is related to external muscular activity.

引用

页码：341 / 351

页数：11

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