Name
Title | ||
|---|---|---|
Instantaneous nonlinear assessment of complex cardiovascular dynamics by Laguerre-Volterra point process models. |
Abstract | ||
|---|---|---|
We report an exemplary study of instantaneous assessment of cardiovascular dynamics performed using point-process nonlinear models based on Laguerre expansion of the linear and nonlinear Wiener-Volterra kernels. As quantifiers, instantaneous measures such as high order spectral features and Lyapunov exponents can be estimated from a quadratic and cubic autoregressive formulation of the model first order moment, respectively. Here, these measures are evaluated on heartbeat series coming from 16 healthy subjects and 14 patients with Congestive Hearth Failure (CHF). Data were gathered from the on-line repository PhysioBank, which has been taken as landmark for testing nonlinear indices. Results show that the proposed nonlinear Laguerre-Volterra point-process methods are able to track the nonlinear and complex cardiovascular dynamics, distinguishing significantly between CHF and healthy heartbeat series. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1109/EMBC.2013.6610952 | EMBC |
Keywords | Field | DocType |
cubic autoregressive formulation,electrocardiography,stochastic processes,bioelectric potentials,laguerre-volterra point process nonlinear model,high order spectral feature,diseases,cardiovascular nonlinear dynamics assessment,laguerre expansion,heartbeat series,regression analysis,nonlinear dynamical systems,quadratic autoregressive formulation,nonlinear wiener-volterra kernel,cardiovascular system,physiological models,lyapunov exponent,data gathering,congestive hearth failure,on-line repository physiobank,first order moment model,heart rate variability,kernel,time series analysis,estimation | Autoregressive model,Applied mathematics,Heartbeat,Nonlinear system,Laguerre polynomials,Control theory,Point process,Quadratic equation,Stochastic process,Electronic engineering,Lyapunov exponent,Mathematics | Conference |
Volume | ISSN | Citations |
2013 | 1557-170X | 9 |
PageRank | References | Authors |
0.70 | 3 | 3 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Gaetano Valenza | 1 | 314 | 48.21 |
| luca citi | 2 | 168 | 27.88 |
| Riccardo Barbieri | 3 | 460 | 70.50 |