# Morris-Lecar model Methods Chapter force
dv/dt = ( I - gca*minf(V)*(V-Vca)-gk*w*(V-VK)-gl*(V-Vl)+s(t))/c
dw/dt = phi*(winf(V)-w)/tauw(V)
v(0)=-32
w(0)=0.26
minf(v)=.5*(1+tanh((v-v1)/v2))
winf(v)=.5*(1+tanh((v-v3)/v4))
tauw(v)=1/cosh((v-v3)/(2*v4))
param vk=-84,vl=-60,vca=120
param i=45.6,gk=8,gl=2,c=20
param v1=-1.2,v2=18
param s0=480,wid=.5,per=76,ton=200
s(t)=heav(t-ton)*(s0*heav(wid-mod(t,per)))
# Uncomment the ones you like!!
#par1-3 v3=2,v4=30,phi=.04,gca=4.4
param_fig4-6 v3=12,v4=17.4,phi=.06666667,gca=4
#par7-8 v3=12,v4=17.4,phi=.23,gca=4
aux stim=s(t)/48
@ total=500,dt=.25,xhi=500,ylo=-60,yhi=35
done