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Time course of membrane currents measured over one paced beat. Black and red traces correspond to high (q = 0.9) and low (q = 0.4) coupling fidelity. All initial conditions are identical for both simulations. (A) Whole-cell ICa is shown. (B) Whole-cell INCX is shown. (C) The total number of Ca sparks in the cell is shown. To see this figure in color, go online.
