Table 1. Model parameters.

Parameter	Basic model	Model with slow inactivation of INap
Passive parameters
Input conductance Gin	1 nS	Same
Input capacitance Cin	13 pF (E12.5, Figures 7B, C, D, F and 8B– D) or 18 pF (E14.5, Figure 7G)	13 pF
Resting potential Vr	−60 mV	Same
Injected current I	20 pA (Figure 7B–G)	10 pA (Figure 8C) or 12 pA (Figure 8D) variable in Figure 8B
Transient sodium current Inat
Maximal conductance GNat	20 nS	Same
Reversal potential ENa	60 mV
Activation exponent	3
Mid-activation Vm	−26 mV
Steepness of activation km	9.5 mV
Activation time constant	1.5 ms
Mid-inactivation Vh	−45 mV
Steepness of inactivation Kh	−5 mV
Inactivation time constant τm	Voltage-dependent (see Material s and methods)
Persistent sodium current INap
Maximal conductance	Variable (see text and figure captions)	Same
Mid-activation voltage	−36 mV	Same
Mid-inactivation Vs		−30 mV
Steepness of inactivation ks		−5 mV
Inactivation time constant	Slow inactivation not included	2 s
Delayed rectifier potassium current IKdr
Maximal conductance GKdr	Variable (see text and figure captions)	Same
Reversal potential EK	−96 mV
Activation exponent	3
Mid-activation Vn	−20 mV
Steepness of activation kn	15 mV
Activation time constant τm	10 ms
Potassium A current IA (when included in the basic model)
Maximal conductance GA	Equal to GKdr	Never included
Mid-activation VmA	−30 mV
Steepness of activation kmA	12 mV
Activation time constant	Instantaneous activation
Mid-inactivation VhA	−70 mV
Steepness of inactivation khA	−7 mV
Inactivation time constant τhA	23 ms