Model Mathematics

E_K = \frac{R T}{F} \ln (\frac{Ko}{Ki}) E_Na = \frac{R T}{F} \ln (\frac{Nao}{Na_i}) \frac{d}{d t} (X_f_act) = \frac{x_f_inf_act - X_f_act}{tau_f_act} \frac{d}{d t} (v) = 0 Na_frac = \frac{NatoK_ratio}{NatoK_ratio + 1} i_fNa = Na_frac g_f X_f_act (v - E_Na) i_fK = (1 - Na_frac) g_f X_f_act (v - E_K) i_f = i_fNa + i_fK

V_tot_tenT = Vc_tenT + VSR_tenT Vc = \frac{V_tot Vc_tenT}{V_tot_tenT} V_SR = \frac{V_tot VSR_tenT}{V_tot_tenT}

xf_3 = xf_5 xf_1 xf_4 = \frac{1}{\frac{1}{xf_2} + \frac{1}{xf_6}} alpha_act = xf_1 ⅇ^{\frac{v}{xf_2}} beta_act = xf_3 ⅇ^{\frac{v}{xf_4}} x_f_inf_act = \frac{alpha_act}{alpha_act + beta_act} tau_f_act = \frac{1}{alpha_act + beta_act} + xf_const