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. Author manuscript; available in PMC: 2009 Oct 7.
Published in final edited form as: J Theor Biol. 2008 Jul 4;254(3):674–690. doi: 10.1016/j.jtbi.2008.06.030

Figure 2.

Figure 2

Alternans in the CM in a ring 13 cm long. A. Action potentials at one location 20 s after initiation of the reentrant pulse at this length. Variations in APD and AP morphology can be seen. B. Consecutive APDs measured at all points along the ring during four successive beats (27–30). The APD varies with a period incommensurate with that associated with the ring length (indicated by dashed lines). No alternans is observed in cable geometries. C. APD restitution curve obtained from the same four beats shown in A. Splitting of the curves can be observed. D. CV restitution curve obtained from the same four beats shown in A. A small degree of splitting is also present here as well, as magnified in the inset.