Component: environment

Component: membrane

$d V d time = (Istim − i_Na + i_s + i_x1 + i_K1) / C$

Component: sodium_current

$i_Na = (g_Na m 3 h j + g_Nac) (V − E_Na)$

Component: sodium_current_m_gate

$alpha_m = − 1 (V + 47) / (e − 0.1 (V + 47) − 1) beta_m = 40 e − 0.056 (V + 72) d m d time = alpha_m (1 − m) − beta_m m$

Component: sodium_current_h_gate

$alpha_h = 0.126 e − 0.25 (V + 77) beta_h = 1.7 / (e − 0.082 (V + 22.5) + 1) d h d time = alpha_h (1 − h) − beta_h h$

Component: sodium_current_j_gate

$alpha_j = 0.055 e − 0.25 (V + 78) / (e − 0.2 (V + 78) + 1) beta_j = 0.3 / (e − 0.1 (V + 32) + 1) d j d time = alpha_j (1 − j) − beta_j j$

Component: slow_inward_current

$E_s = − 82.3 − 13.0287 ln (Cai × 0.001) i_s = g_s d f (V − E_s) d Cai d time = − 0.01 i_s / 1 + 0.07 (0.0001 − Cai)$

Component: slow_inward_current_d_gate

$alpha_d = 0.095 e − (V − 5) / 100 / (1 + e − (V − 5) / 13.89) beta_d = 0.07 e − (V + 44) / 59 / (1 + e (V + 44) / 20) d d d time = alpha_d (1 − d) − beta_d d$

Component: slow_inward_current_f_gate

$alpha_f = 0.012 e − (V + 28) / 125 / (1 + e (V + 28) / 6.67) beta_f = 0.0065 e − (V + 30) / 50 / (1 + e − (V + 30) / 5) d f d time = alpha_f (1 − f) − beta_f f$

Component: time_dependent_outward_current

$i_x1 = x1 × 8e-3 (e 0.04 (V + 77) − 1) / e 0.04 (V + 35)$

Component: time_dependent_outward_current_x1_gate

$alpha_x1 = 5e-4 e (V + 50) / 12.1 / (1 + e (V + 50) / 17.5) beta_x1 = 0.0013 e − (V + 20) / 16.67 / (1 + e − (V + 20) / 25) d x1 d time = alpha_x1 (1 − x1) − beta_x1 x1$

Component: time_independent_outward_current

$i_K1 = 0.0035 (4 (e 0.04 (V + 85) − 1) / (e 0.08 (V + 53) + e 0.04 (V + 53)) + 0.2 (V + 23) / (1 − e − 0.04 (V + 23)))$

Component: stimulus_protocol

$Istim = {IstimAmplitude if (time ≥ IstimStart) ∧ (time ≤ IstimEnd) ∧ (time − IstimStart − ⌊ (time − IstimStart) / IstimPeriod ⌋ IstimPeriod ≤ IstimPulseDuration) 0 if$