Figure 3.

Ca currents and Ca concentrations in a single dyad in a ventricular myocyte model paced at 1 Hz. (A) AP. (B) L-type Ca current $\left({\mathrm{I}}_{\mathrm{CaL}}^{\mathrm{dyad}}\right).$ (C) Ca release current $\left({\mathrm{I}}_{\mathrm{rel}}^{\mathrm{dyad}}\right).$ (D) Dyadic space Ca concentration $\left(\mathrm{C}{\mathrm{a}}_{\mathrm{d}}^{\mathrm{dyad}}\right).$ (E) Submembrane Ca concentration $\left(\mathrm{C}{\mathrm{a}}_{\mathrm{ss}}^{\mathrm{dyad}}\right).$ (F) Free SR Ca concentration $\left(\mathrm{C}{\mathrm{a}}_{\mathrm{SR}}^{\mathrm{dyad}}\right).$ Insets in C–E show expanded timescale.