www.neuron.yale.edu

Then I am forced to conclude that you have not worked through the CellBuilder tutorials at http://www.neuron.yale.edu/neuron/docs or maybe you didn't notice the part that said that the CellBuilder doesn't actually create any sections until you click on the "Continuous Create" button. Sure...

ted wrote:[quote="yk890406

Code: Select all

oc>forall print secname()
oc>

This shows that no sections exist. Not even one. How are you specifying the properties of your model cell--with a CellBuilder, or with hoc code?

I use CellBuilder.

ted wrote:

yk890406 wrote:And can I simulate electric synapse with neuron?

Yes. What do you mean by electric synapse? Ephaptic interaction, or gap junction?

Sorry, I do not the term of it. It means there gap 2-3 nm between two nerve cells. The cell pass the signal without Neurotransmitter but with ions directly.

oc>print secname()
nrniv: Section access unspecified
near line 3
print secname()
^
secname( )
oc>forall print secname()
oc>

And can I simulate electric synapse with neuron?

The command to try is forall print secname() not for all . . . Also, tell me what print secname() returns. Thank you Ted, I have fixed the problem. Although I still cannot insert, I can use the GUI to build. That is good enough for me. I have a question that whether I can simulate the signal in a f...

This happens when there is no default section. At the oc> prompt in NEURON's xterm, type the command forall print secname() What is NEURON's reply to this command? It shows" oc>for all print secname() first instance of all nrniv: syntax error near line 8 for all print secname() ^"

After I click the insert. It shows "No accessed section: Can't start an insert.