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Averaged spark waveforms (n = 1,767). (A–C) Calculations with Model 2 and a SR Ca2+ flux of 2.5 pA for 4.6 ms; the format is the same as that in Fig. 4, A–C. In A, the value of FDHM is 6.98 ms. In C, the amplitude of ΔF/F is 0.030. (D–F) These panels are identical to Fig. 4, D–F.
