Time-delay feedback control of complex pathological rhythms in an atrioventricular conduction model

We describe the emergence of complex cardiac rhythms in a nonlinear model o f the atrioventricular (AV) nodal conduction system, and a method based on linear time-delay feedback (LTDF) control for suppressing them. The LTDF co ntroller is effective at suppressing these rhythms by stabilizing the map t o one of a set of unstable fixed points. Additionally, we show that the met hod is robust to both measurement error and experimental noise.