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. 2018 Oct 17;9:1454. doi: 10.3389/fphys.2018.01454

FIGURE 9.

FIGURE 9

Unity of action potential and calcium transient signal-to-noise. The signal to noise of AP and CaT plotted against one another for two example hearts from normal zone (NZ) (closed symbols) and ischemic zone (IZ – open symbols). CaT signal was on average 76% of the equivalent AP signal at all depths and remained below the detection threshold for calcium signals in the IZ.