Table 3.

Dynamic equations for ionic channels

Ion	Channel	State variable	α	β
Na	Fast sodium	m	$\frac{-0.6*\left(\mathrm{V}+30\right)}{e^{-0.1*\left(\mathrm{V}+30\right)}-1}$	$\frac{20}{e^{\frac{\mathrm{V}+55}{18}}}$
		h	$\frac{0.4}{e^{\frac{\mathrm{V}+50}{20}}}$	$\frac{6}{1+e^{-0.1*\left(\mathrm{V}+20\right)}}$
K	Delayed	n	$\frac{-0.02*\left(\mathrm{V}+40\right)}{e^{-0.1*\left(\mathrm{V}+40\right)}-1}$	$\frac{0.4}{e^{\frac{\mathrm{V}+50}{80}}}$
	A-type	a	$\frac{-0.006*\left(\mathrm{V}+90\right)}{e^{-0.1*\left(\mathrm{V}+40\right)}-1}$	$\frac{0.1}{e^{\frac{\mathrm{V}+30}{10}}}$
		h A	$\frac{0.04}{e^{\frac{\mathrm{V}+70}{20}}}$	$\frac{0.6}{e^{-0.1*\left(\mathrm{V}+90\right)}+1}$
	Calcium		$I_{K,Ca}={\widehat{G}}_{K,Ca}\left(\frac{{\left[Ca\right]}_i/0.001}{1+{\left[Ca\right]}_i/0.001}\right)\left(\mathrm{V}-e_k\right)$
Ca	Ca	c	$\frac{-0.3*\left(\mathrm{V}+13\right)}{e^{-0.1*\left(\mathrm{V}+13\right)}-1}$	$\frac{10}{e^{\frac{\mathrm{V}+38}{18}}}$