A Percentile-Based Coarse Graining Approach is Helpful in Symbolizing Heart Rate Variability during Graded Head-Up Tilt

Cysarz, Dirk ;   Edelhäuser, Friedrich ;   Javorka, Michal ;   Montano, Nicola ;   Porta, Alberto

Tags Complexity in cardiovascular or cardiorespiratory signalsHeart rate variabilityAutonomic nervous system

Coarse graining of physiological time series such as the cardiac interbeat interval series by means of a symbolic transformation retains...

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Cardiorespiratory and Cardiovascular Interactions in Cardiomyopathy Patients using Joint Symbolic Dynamic Analysis

Giraldo, Beatriz ;   Rodriguez, Javier ;   Caminal, Pere ;   Bayes-Genis, Antoni ;   Voss, Andreas

Tags Complexity in cardiovascular or cardiorespiratory signalsNon-linear cardiovascular or cardiorespiratory relationsHRV and blood pressure monitoring

Cardiovascular diseases are the first cause of death in developed countries. Using electrocardiographic (ECG), blood pressure (BP) and...

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Gender-Specific Velocity Recognition of Caress-Like Stimuli through Nonlinear Analysis of Heart Rate Variability

Nardelli, Mimma ;   Valenza, Gaetano ;   Bianchi, Matteo ;   Greco, Alberto ;   Lanata', Antonio ;   Bicchi, Antonio ;   Scilingo, Enzo Pasquale

Tags Complexity in cardiovascular or cardiorespiratory signalsCardiovascular signal processingNon-linear cardiovascular or cardiorespiratory relations

This study reports on the development of a gender-specific classification system able to discern between two levels of velocity of a...

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Influence of Sleep State and Position on Cardio-Respiratory Regulation in Newborn Babies

Lucchini, Maristella ;   Fifer, William P. ;   Perez, Albany ;   Signorini, Maria G.

Tags Complexity in cardiovascular or cardiorespiratory signalsCardiovascular signal processingHeart rate variability

This paper presents the results of a sleep study on 60 newborn infants and 22 one-month infants, in quiet and active sleep and in prone and...

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The Fractal Structure of Cardiovascular Beat-to-Beat Series Described over a Broad Range of Scales: Differences between Blood Pressure and Heart Rate, and the Effect of Gender

Castiglioni, Paolo ;   Brambilla, Valerio ;   Brambilla, Lorenzo ;   Gualerzi, Massimo ;   Lazzeroni, Davide ;   Coruzzi, Paolo

Tags Complexity in cardiovascular or cardiorespiratory signalsHRV and blood pressure monitoringCardiovascular signal processing

The fractal characteristics of heart rate variability are usually assessed by estimating short- and long-term scale coefficients, alpha1 and...

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Time, Frequency and Information Domain Analysis of Heart Period and QT Variability in Asymptomatic Long QT Syndrome Type 2 Patients

Bari, Vlasta ;   Girardengo, Giulia ;   Marchi, Andrea ;   De Maria, Beatrice ;   George Jr, Alfred ;   Brink, Paul ;   Crotti, Lia ;   Schwartz, Peter J. ;   Porta, Alberto

Tags Complexity in cardiovascular or cardiorespiratory signalsHeart rate variabilityCardiovascular signal processing

This study was designed to characterize in time, frequency and information domains heart period (HP) and QT interval variabilities in...

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