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. Author manuscript; available in PMC: 2011 May 28.
Published in final edited form as: Circ Res. 2010 Apr 8;106(10):1582–1591. doi: 10.1161/CIRCRESAHA.109.213975

Figure 5. Ca alternans does not rely on SR Ca load.

Figure 5

A. Clamped SR Ca concentration (gray dashed) and myoplasmic Ca concentration versus time, PCL=500 ms. B. Ca depletion from SR versus SR Ca content as PCL increased gradually from 500 ms to 2000 ms in increments of 50 ms, with the initial 20 beats for PCL=500 ms (“stable alternans”) and the last 10 beats for PCL=2000 ms (“regular depletion”).