booth_bose.ode

# $Id: booth_bose.ode,v 1.29 2004/02/09 21:41:46 billl Exp $
## booth_bose.ode
## Pinsky-Rinzel pyramidal cell
## |||#|||
# parameter values
par ip0=0.75
# par gLs=0.1  gLd=0.1  gNa=0  gKdr=0  gCa=0  gKahp=0  gKC=0
par gLs=0.1  gLd=0.1  gNa=30  gKdr=15  gCa=10  gKahp=0.8  gKC=15  
par VNa=60  VCa=80  VK=-75  VL=-60  Vsyn=0  
par gc=2.1 pp=0.5  Cm=3  
par alphac=2 betac=0.1
# output cols are t, ODEs, AUXs in order, here:
# t vs vd cad hs ns sd cd qd gqk gkc 
Vs'=(-gLs*(Vs-VL)-gNa*(Minfs(Vs)^2)*hs*(Vs-VNa)-gKdr*ns*(Vs-VK)+(gc/pp)*(Vd-Vs)+Ip0/pp)/Cm
Vd'=(-gLd*(Vd-VL)-ICad-gKahp*qd*(Vd-VK)-gKC*cd*chid*(Vd-VK)+(gc*(Vs-Vd))/(1.0-pp))/Cm
Cad'=  -0.13*ICad-0.075*Cad
hs'=  alphahs(Vs)-(alphahs(Vs)+betahs(Vs))*hs
ns'=  alphans(Vs)-(alphans(Vs)+betans(Vs))*ns
sd'=  alphasd(Vd)-(alphasd(Vd)+betasd(Vd))*sd
cd'=  alphacd(Vd)-(alphacd(Vd)+betacd(Vd))*cd
qd'=  alphaqd-(alphaqd+betaqd)*qd
# pyramidal cell functions
ICad=     gCa*sd*sd*(Vd-VCa)
alphams(v)=  0.32*(-46.9-v)/(exp((-46.9-v)/4.0)-1.0)
betams(v)=   0.28*(v+19.9)/(exp((v+19.9)/5.0)-1.0)
Minfs(v)=    alphams(v)/(alphams(v)+betams(v))
alphans(v)=  0.016*(-24.9-v)/(exp((-24.9-v)/5.0)-1.0)
betans(v)=   0.25*exp(-1.0-0.025*v)
alphahs(v)=  0.128*exp((-43.0-v)/18.0)
betahs(v)=   4.0/(1.0+exp((-20.0-v)/5.0))
alphasd(v)=  1.6/(1.0+exp(-0.072*(v-5.0)))
betasd(v)=   0.02*(v+8.9)/(exp((v+8.9)/5.0)-1.0)
alphacd(v)=(1.0-heav(v+10.0))*exp((v+50.0)/11-(v+53.5)/27)/18.975+heav(v+10.0)*2.0*exp((-53.5-v)/27.0) 
betacd(v)=   (1.0-heav(v+10.0))*(2.0*exp((-53.5-v)/27.0)-alphacd(v))
alphaqd=  min(0.00002*Cad,0.01)
betaqd=   0.001
chid=     min(Cad/250.0,1.0)
# auxiliary eqns
# aux sdc =  (gc/pp)*(Vd-Vs)
# aux ICa = ICad
aux gkq = gKahp*qd
aux gkc = gKC*cd*chid
# initial conditions
init Vs=-60 Vd=-60
# integrator params
@ maxstor=80000,total=1.5e3,bound=10000,xlo=0,xhi=1.5e3,ylo=-100,yhi=30
@ meth=cvode,atol=0.0001,toler=0.0001,dt=0.3
done