Karma model. Temporal alternationWe add excitation cI(t) with period T to the systemdE/dt = F(E, n) + c I(t) = [A - (n/nb)^{M}][1 - tanh(E - 3)]E^{2}/2 - E + c I(t), dn/dt = H(E, n) = ε [Θ(E - 1) - n]. where A = 1.5415 and I(t) ~ [cos(πt/T)]^{500}, _{-δ }∫^{ δ}I(t)dt = 1. M
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Heart rhythms updated 2 Dec 2011 |