i_Ca_L i_Ca_T i_K_DR i_K_Ca i_K_IR Cm m_L_infinity m_L tau_m_L 1 1 V_m_L V k_m_L tau_m_L_max V V_tau k_tau 2 2 V_tau V k_tau g_Ca_L m_L 2 V_Ca V Ca_i Ca_e -2 F V R T 1 -2 F V R T m_T_infinity m_T tau_m_T 1 1 V_m_T V k_m_T tau_m_T_max V V_tau k_tau 2 2 V_tau V k_tau h_T_infinity h_T tau_h_T 1 1 V V_h_T k_h_T g_Ca_T m_T 2 h_T V_Ca n_infinity n tau_n 1 1 V_n V k_n g_K_DR n V V_K V K_i K_e -1 F V R T 1 -1 F V R T g_K_Ca Ca_i 4 Ca_i 4 Kc 4 V_K I_max 1 V_K_IR V ks V V_K_IR g_K_IR V V_K_IR f_cyt beta J_in J_eff alpha i_Ca_L i_Ca_T v_p Ca_i 2 Ca_i 2 K_p 2