Table 3.

Equations and parameters for the single-compartment bEIF model

Variable	Equation
Membrane potential V	$C_m\hspace{0.17em}\mathrm{d}\mathrm{V}(t)/\mathrm{d}\mathrm{t}=I_{\text{L}}+I_{\text{dep}}+I_{\text{rep}}+I_{\text{inj}}$
Leak current	$I_{\text{L}}={\text{G}}_{\text{L}}\cdot ({\text{E}}_{\text{L}}-V)$
Spike-generating (depolarizing) current	$I_{\text{dep}}={\text{G}}_{\text{L}}{K}_{\text{T}}\frac{A_T}{(1+A_T\hspace{0.17em}\exp (-(V-V_T)/K_{\text{T}}))}$
Repolarizing current	$I_{\text{rep}}={\text{G}}_{\text{rep}}(t)\cdot ({\text{E}}_{\text{L}}-V)$
Starting time of repolarizing current	${\text{T}}_{\text{rep}}:=t$ when $V(t)\ge V_{\text{rep}}$
Repolarizing conductance (for t ≥ Trep)	${\text{G}}_{\text{rep}}(t)={\text{G}}_{\text{L}}{A}_{\text{rep}}\left(\frac{(t-{\text{T}}_{\text{rep}})}{{\tau }_{\text{rep}}}\right)\exp \left(1-\frac{(t-{\text{T}}_{\text{rep}})}{{\tau }_{\text{rep}}}\right)$
Intracellularly injected current	$I_{\text{inj}}=0$ (default)
Parameter	Value
Membrane capacitance density Cm	1.0 μF/cm2
Leak conductance density GL	0.1 mS/cm2
Leak reversal potential EL	-65.3 mV
Threshold for spike-generating current VT	-60.2 mV
Slope factor of the spike-generating current KT	3.5 mV
Ceiling factor of the spike-generating current AT	520 (no unit)
Starting voltage of repolarization current Vrep	+10 mV
Time constant of repolarizing conductance τrep	0.60 ms
Amplitude factor of repolarizing conductance Arep	90 (no unit)