687472.fig.003a
(a)
687472.fig.003b
(b)
687472.fig.003c
(c)
687472.fig.003d
(d)
Figure 3: Hopf bifurcation for the coupled system (10), plots of peak calcium versus APD, where , and the other parameters are the same as that in Figure 2. (a) , and . (b) , and . (c) , under the other conditions same as in (b). (d) , under the other conditions same as in (b).