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  • 1
    Digitale Medien
    Digitale Medien
    Results of modelling and physiological examination of movement-related heart-rate reactions in neonates (1988)
    Springer
    Medical & biological engineering & computing 26 (1988), S. 599-604 
    Details
    ISSN: 1741-0444
    Schlagwort(e): Actogram ; Heart rate ; Movement ; Neonates ; Signal analysis ; Simulation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: Abstract It can be shown that the sequence of spontaneous movements in the active sleep of healthy neonates can be described as a Poisson process. This statistical model is the basis of the modelling of movement-related heart-rate reactions (MRHR) as a secondary process. Modelling these processes gives essential information about possible diagnostic parameters such as the mean frequency of classified movements in active sleep (AS), and characteristics of the course of MRHR. Optimisation of the reliability of interpreting power spectral parameters, analysis of longterm rhythms and designation of the physiological trends of neonatal heart rates can be attained if the results of time series analysis are compared with fitted simulations. Modifications and new techniques of data acquisition and processing are created by means of the computer model.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02447497
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Using discrete Hibert transformation for interval-related calculation of the respiration rate in neonates (1991)
    Springer
    Medical & biological engineering & computing 29 (1991), S. 249-253 
    Details
    ISSN: 1741-0444
    Schlagwort(e): Discrete Hilbert transformation ; Neonates ; Respiration rates
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie , Medizin
    Notizen: Abstract From the basis of the fast Fourier transformation (FFT), the discrete Hilbert transformation (DHT) is used to compute the instantaneous respiration rate in neonates. This interval-related computation of respiration rate must be combined with a concept of adaptive filtration of the respiratory movements. This strategy is performed by adaptive recursive estimations of mean values with different adaptation constants. Additionally, a frequency band limitation is carried out on the basis of the peak characteristic of the power spectrum (respiratory movements). By means of the adaptive estimation of the variance of respiratory movements, an amplitude-time window is calculated to choose between epochs with breaths and apnoea.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02446706
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
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