Research Article

Different Densities of Na-Ca Exchange Current in T-Tubular and Surface Membranes and Their Impact on Cellular Activity in a Model of Rat Ventricular Cardiomyocyte

Figure 3

Action potential, , and Ca2+ concentration changes in the network compartment of SR (), submembrane spaces (surface: , t-tubular: ), and the cytosol () during 0.2 s of steady-state stimulation cycle (after 600 s) at 5 Hz (the physiological stimulation frequency corresponding to resting heart rate in rat). For further details, see legend of Figure 2.