Two diverse complexity metrics quantifying time irreversibility and local prediction, in connection with a surrogate data approach, were utilized to detect nonlinear dynamics in short heart period (HP) variability series recorded in fetuses, as a function of the gestational period, and in healthy humans, as a function of the magnitude of the orthostatic challenge. The metrics indicated the presence of two distinct types of nonlinear HP dynamics characterized by diverse ranges of time scales. These findings stress the need to render more specific the analysis of nonlinear components of HP dynamics by accounting for different temporal scales.
Complexity analyses show two distinct types of nonlinear dynamics in short heart period variability recordings / A. Porta, V. Bari, A. Marchi, B. De Maria, D. Cysarz, P. Van Leeuwen, A.C.M. Takahashi, A.M. Catai, T. Gnecchi-Ruscone. - In: FRONTIERS IN PHYSIOLOGY. - ISSN 1664-042X. - 6(2015 Mar 10), pp. 71.1-71.7. [10.3389/fphys.2015.00071]
Complexity analyses show two distinct types of nonlinear dynamics in short heart period variability recordings
A. Porta;V. Bari;
2015
Abstract
Two diverse complexity metrics quantifying time irreversibility and local prediction, in connection with a surrogate data approach, were utilized to detect nonlinear dynamics in short heart period (HP) variability series recorded in fetuses, as a function of the gestational period, and in healthy humans, as a function of the magnitude of the orthostatic challenge. The metrics indicated the presence of two distinct types of nonlinear HP dynamics characterized by diverse ranges of time scales. These findings stress the need to render more specific the analysis of nonlinear components of HP dynamics by accounting for different temporal scales.File | Dimensione | Formato | |
---|---|---|---|
fphys-06-00071.pdf
accesso aperto
Tipologia:
Publisher's version/PDF
Dimensione
396.9 kB
Formato
Adobe PDF
|
396.9 kB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.