# The Morris-Lecar equations ml1.ode # NOTE: I use only the first letter for declarations! # Declare the parameters p gl=.5,gca=1,gk=2 p vk=-.7,vl=-.5,vca=1 p v1=.01,v2=.145,v3=.1,v4=.15 p i=.2,phi=.333 # Define some functions minf(v)=.5*(1+tanh((v-v1)/v2)) winf(v)= .5*(1+tanh((v-v3)/v4)) lamw(v)= cosh((v-v3)/(2*v4)) # define the right-hand sides v'= gl*(vl-v)+gk*w*(vk-v)-icaf+i w'= phi*lamw(v)*(winf(v)-w) # where icaf=gca*minf(v)*(v-vca) # and aux ica=icaf # some initial conditions -- not necessary but for completeness v(0)=.05 w(0)=0 # Done!! d