Oks	Probability that IKs channels are in the open state.
Iks	Current through IKs channels.
Ik	Sum of potassium currents.
INa	Sum of sodium currents.
ICa	Sum of calcium currents.
V	Potential across the membrane.
C	Membrane capacitance.
M	The number of time steps required to reach the steady-state condition (usually equivalent to a few seconds).
a1Func	Transition rate to open state as a function of V.
b1Func	Transition rate from open state as a function of V.
C10,
C20,	Initial probability of IKs subunit states.
C30,
Oks0
QMatrix	The transition rate matrix for subunit states:
	1 R = 1/(1-Oks0)*[C10C20C30]T
	2 U = [1 0 0]T
	3 Oks = Oks0
	4 S = 0
	5 F(1) = −α1*(1-Oks0)*R[1] ^ 4 + β1*Oks0
	6 for i = 1 to number of timesteps
	7 Oks = Oks-F(i)*dt
	8 Ik = Ikr + Iks + Ik1 + …
	9 Ik = Ikr + Iks
	10 Iion = INa + ICa + Ik
	11 V = V-1/C *Iion* dt
	12 Q = QMatrix(V)
	13 a1 = a1Func(V)
	14 b1 = b1Func(V)
	15 R = R + Q*R*dt
	16 U = [[U + Q*U*dt], [1 0 0]T]
	17 Ftemp = 0
	18 for k = 1 to Min{i,M}
	19 Ftemp = F(k)*(a1*U(1,k) ^ 4 + b1)*dt
	20 end
	21 Ftemp = −a1*(1-Oks + S)*R(1) ^ 4 + b1*(Oks-S) − Ftemp
	22 F(i + 1) = Ftemp/(1 + dt*(a1 + b1))
	23 if i > = M
	24 S = S + F(1)*dt
	25 F = F(2:M + 1)
	26 U = U(:,2:M + 1)
	27 end
	28 end