Key result
The extended time-delayed feedback control method applied to a mathematical model of ECG signals successfully controlled or suppressed chaotic heart dynamics to generate less-critical behaviors.
The extended time-delayed feedback control method can theoretically stabilize chaotic heart rhythms in a mathematical ECG model.
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Supports theoretical chaos control in ECG models; leaves open clinical translation pending prospective validation.
The control of irregular or chaotic heartbeats is a key issue in cardiology. In this regard, chaos control techniques represent a good alternative since they suggest treatments different from those traditionally used. This paper deals with the application of the extended time-delayed feedback control method to stabilize pathological chaotic heart rhythms. Electrocardiogram (ECG) signals are employed to represent the cardiovascular behavior. A mathematical model is employed to generate ECG signals using three modified Van der Pol oscillators connected with time delay couplings. This model provides results that qualitatively capture the general behavior of the heart. Controlled ECG signals show the ability of the strategy either to control or to suppress the chaotic heart dynamics generating less-critical behaviors.
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Ferreira et al. (2014) studied pathological chaotic heart rhythms. extended time-delayed feedback control method was evaluated on stabilization of pathological chaotic heart rhythms. The extended time-delayed feedback control method applied to a mathematical model of ECG signals successfully controlled or suppressed chaotic heart dynamics to generate less-critical behaviors.
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