Table 3.

Equations used for calculating the steady-state activation $m_x{}_{\infty }(V)$ and inactivation $h_x{}_{\infty }(V)$, and time constants of activation ${\tau }_{m_x}(V)(s)$and inactivation ${\tau }_{h_x}(V)$ $(s)$

Current	$m_x{}_{\infty }(V)$	${\tau }_{m_x}(V)(s)$	$h_x{}_{\infty }(V)$	${\tau }_{h_x}(V)$ $(s)$
Ih	$\frac{1}{1+2e^{(180(V+0.045))}+e^{(500(V+0.045))}}$	$0.7+\frac{1.7}{1+e^{(-100(V+0.073))}}$	—	—
IP	$\frac{1}{1+e^{(-120(V+0.039))}}$	$0.01+\frac{0.2}{1+e^{(400(V+0.057))}}$	—	—
INaF	$\frac{1}{1+e^{(-150(V+0.029))}}$	0.0001	$\frac{1}{1+e^{(500(V+0.03))}}$	$0.004+\frac{0.006}{(1+e^{(500(V+0.028))})}+\frac{0.01}{\text{cosh}(330(V+0.027))}$
ICaF	$\frac{1}{1+e^{(-600(V+0.0467))}}$	$0.011+\frac{0.024}{\text{cosh}(-330(V+0.0467))}$	$\frac{1}{1+e^{(350(V+0.0555))}}$	$0.06+\frac{0.31}{1+e^{(270(V+0.055))}}$
ICaS	$\frac{1}{1+e^{(-420(V+0.0472))}}$	$0.005+\frac{0.134}{1+e^{(-400(V+0.0487))}}$	$\frac{1}{1+e^{(360(V+0.055))}}$	$0.2+\frac{5.25}{1+e^{(-250(V+0.043))}}$
IK1	$\frac{1}{1+e^{(-143(V+0.021))}}$	$0.001+\frac{0.011}{1+e^{(150(V+0.016))}}$	$\frac{1}{1+e^{(111(V+0.028))}}$	$0.5+\frac{0.2}{1+e^{(-143(V+0.013))}}$
IK2	$\frac{1}{1+e^{(-83(V+0.022))}}$	$0.057+\frac{0.043}{1+e^{(200(V+0.035))}}$	—	—
IKA	$\frac{1}{1+e^{(-130(V+0.044))}}$	$0.005+\frac{0.011}{1+e^{(200(V+0.03))}}$	$\frac{1}{1+e^{(160(V+0.063))}}$	$0.026+\frac{0.0085}{1+e^{(-300(V+0.055))}}$