Figure 5

Plots 1 and 2 – original ECG with ventricular fibrillation. Plots 3 and 4 – sinusoidal noise with carrier frequency of 50 Hz (frequency modulated at a rate of 0.1 Hz*sec^-1), and 3 mV amplitude (amplitude modulated at a rate of 0.2 mV*sec^-1). Plots 5 and 6 -–the original ECG mixed with the 50 Hz noise. Plots 7 and 8 – processed ECG.