I would like to make a simulation (concerning genetic evolution) and I want to use a very simplistic model of neurons.
I don't really care there are different kinds of neurons, I don't care much that the extracellular field is different at axons-dendrites and initially, I don't even care that the spike is transferred through the axon. What I really want to know, is whether I can approximate (very roughly) the field with a magnetic dipole pointing at the direction of the axon. Or are the directions of the MF and the axon unrelated?
I have looked around for some image depicting such a relation, but I didn't find any. Is there any resource of some kind available?