134163.fig.002a
(a)
134163.fig.002b
(b)
134163.fig.002c
(c)
134163.fig.002d
(d)
Figure 2: A schematic illustration of the four mechanisms of excitation (a) cathode make; (b) anode make; (c) cathode break; (d) anode break. Fiber orientation is along the horizontal and the electrode is indicated by the black dot. D is depolarization and H is hyperpolarization. This figure summarizes the results of simulations performed using the bidomain model [10].