www.neuron.yale.edu

My model is a pyramidal neuron with synapses distributed on the dendritic tree. I hope to "put" a tiny amper-meter inside a branch to measure the current flowing through this position after a distal synapase was excited. But I don't know how to do it.
Thank you very much.

One way to measure axial current is to measure the membrane potential at two
adjacent nodes, and divide by the axial (cytoplasmic) resistance that separates them.
Example: if the dendritic section is called dend, the axial current between the 0 end of
dend and its first internal node is iax given by This assumes that the 0 end of dend is attached to its parent, and that dend.nseg < 100.
iax > 0 means current flow is toward the 0 end.