i_Na i_K i_leak i_app Cm IstimAmplitude time_ IstimStart time_ IstimEnd time_ IstimStart time_ IstimStart IstimPeriod IstimPeriod IstimPulseDuration 0 120 x_infinity 3 1 n V 120 alpha_x alpha_x beta_x 0.2 V 40 1 1 V 40 10 8 1 V 65 18 36 n 4 V 77 1 alpha_n 1 n beta_n n 0.02 V 55 1 V 55 10 0.25 V 65 80 0.3 V 54 T_bar R kr_plus Ca 1 R kr_minus R O Ca_open 0.1 sigma 2 Dc r -5.182 i_V g_Ca P 2 F V R_gas_const Temp Ca_ex 1 2 F V R_gas_const Temp 0.45 V 22 alpha 8 0.015 V 14 beta 8 3 a 680 320 a ka_plus T 1 a ka_minus a beta C2 kG_minus C_G1 C1 4 alpha kG_plus 4 alpha C1 2 beta C3 kG2_minus C_G2 C2 beta 3 alpha kG_plus 3 alpha C2 3 beta C4 kG3_minus C_G3 C3 2 beta 2 alpha kG_plus 2 alpha C3 4 beta O C4 3 beta alpha 1 C1 C2 C3 C4 C_G1 C_G2 C_G3 C_G1 C_G2 C_G3 beta_ C_G2 kG_plus C1 C_G1 4 alpha_ kG_minus 4 alpha_ C_G1 2 beta_ C_G3 kG_plus C2 C_G2 beta_ 3 alpha_ kG2_minus 3 alpha_ C_G2 kG_plus C3 C_G3 2 beta_ kG3_minus