|
k (index) |
Ion species:  ,  or 
|
|
|
n (index) |
Domain: I (ICS) or E (ECS) |
|
|
Ion concentration of species k in domain n
|
mM |
|
Charge density |
C/m3
|
|
Charge density, represented as concentration of unit charge |
mM |
|
Membrane potential |
mV |
|
Membrane flux density of species k
|
|
|
Axial flux density due to electrical migration |
|
|
Axial flux density due to diffusion |
|
|
Diffusion constant in diluted media |
m2/s |
|
Tortuosity (effective diffusion constant =  ) |
|
|
Resistivity |
|
|
Membrane conductance for passive ion channels |
S/m2
|
|
Maximum Na+/K+ pump-rate |
mol/(m2s) |
|
l
|
Length of astrocyte |
|
|
Astrocyte volume/total tissue volume |
|
|
ECS volume/total tissue volume |
|
|
Membrane area/total tissue volume |
m−1
|
|
Rate for concentration dependent output |
m/s |
|
Constant input flux density in input zone |
mol/(m2s) |
