Effects of the inhibition of Na⁺/K⁺ ATPase by glucose. The inhibition of NaK by glucose was introduced from 80 s (gray bar) by changing F_glu (Eq. S55) from 1 to 0.552 at 8 mM [G]. The panels show time courses of V_m, [Na⁺]_i, [Ca²⁺]_i, I_NaK, and I_NaCa. Dotted lines indicate the initial basal level of [Ca²⁺]_i (third panel) and zero current levels (bottom panel).