Figure 8.

Transmembrane voltage distribution after a premature stimulation. (a) Deterministic pacing: the premature beat wave breaks and a figure-eight reentry pattern is initiated. (b) Stochastic pacing (σ = 3.5 ms): an example in which the premature beat is conducted without a wavebreak. (c) Stochastic pacing (σ = 3.5 ms): an example in which the premature beat is fully blocked. (d) Transmembrane voltage recording at the stimulation site (x,y) = (0,0) demonstrating the block of the premature beat at the origin.