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Ted Thanks for your help in automating the process. Now I am stuck at created asymmetry in my model. I have tried to reproduce " Neurokinematic modeling of complex swimming patterns of the larval zebrafish" from Scott A. Hill I could did it pretty well. Just for information I used NetStim ...

Ted and Hines,
The dmg file I am using is nrn-7.3.x86_64-apple-OSX10.7.dmg.

Hi Ted, I try to set up Neuron for my new Macbook. The following appear in neuron command window Last login: Thu Jul 25 06:30:43 on ttys000 wirelessprvnat-172-16-214-72:~ hapham$ cd ; clear; cp .nrn_as2sh /tmp/nrn_as2sh$$; sh /tmp/nrn_as2sh$$;rm -f /tmp/nrn_as2sh$$ ; exit -e NEURON -- Release 7.3 (8...

I have a question about the resistance of neuron membrane. According to the cable equation:
rm = R/(2pia)
cm = C2pia
where a is the axon radius, when I change 'a' in the model, will rm and cm change automatically with 'a' by the above equation in Neuron?

Hi Ted, To change Ra of all cells in my model, I excute the following code: for i=0, cells.count()-1 { Ra = 100 } However the spike train does not change (note that when I open the hoc file by txt, change the value there and save, the spike train changes). Can you show me my problem? To change the p...

Ted, For the first test, the following appears: NEURON -- Release 7.3 (849:5be3d097b917) 2013-04-11 Duke, Yale, and the BlueBrain Project -- Copyright 1984-2013 See http://www.neuron.yale.edu/neuron/credits /cygdrive/c/Windows/system32 0 oc> For the second test, the command window prints the followi...

Hi Ted, I am building a model of 61 cells. After finishing cell builder, I open Network Builder window. However, I am not able to see all my cell names in that window and cannot scroll up and down the page. I also try several things like view=plot or zoom in and out , but they do not help. Can you s...

Ted, I have tried saving all files in a folder. In my init_fishmodel.hoc I have: load_file("nrngui.hoc") load_file("fishmodel.hoc") load_file("initrun_fishmodel.hoc") load_file("wtdel.hoc") But the program cannot find fishmodel.hoc, initrun_fishmodel.hoc and w...

Hi Ted, I have built a network model of fish. The spike train obtained by this model was then analyzied and compared with the real fish. At first, the artifitial model and the real one did not fit each other. Then I tried to change some parameters, such as: synaptic weight, delay time, length, resis...

Thank you for your instruction. I got your idea. Actually, I was working on the same thing as yours. I save delay and weigh to two text files and then scan them to neuron files. The code looks like the following: //Note to open ha.dat file need to change the directory to the position we save the fil...

Hi Ted, 1. I am trying to input a vector which has two column, one is synaptic weight and one is delay time, to Neuron. This vector is created by Matlab and is saved as .txt file. However, I am not able to open it in Neuron. I also find that the vector with one column can be openned. What should I d...

Hi Ted,
Yes I am able to save all spike times to a file now.

Hi Ted, I have rechecked my code and found many silly mistakes. I have fixed my code: oc>objref f2 oc>for i=0, 4 { oc>sprint(name, "%d", idvec.x[i]) oc>f2 = new File("name") oc>f2.wopen("name") oc>for j=0, tvec.size()-1 { oc>f2.printf("%f\n", tvec.x[j]) > oc>}...

Hi Ted, I got your idea. Instead of saving the spike trains of all cells in a same file, I now want to save them separately. For example, "cell1.txt" contains the spike train of the cell 1 only and "cell2.txt" contains the spike train of cell 2 only and so on. Therefore, I use st...

Hi Ted, Your instruction is quite clear. I got the code worked but not automatically. I execute the following code to export the data to a file: oc>objref f1 oc>f1 = new File("cell3.txt") oc>f1.wopen("cell3.txt") 1 oc>for i=0, tvec.size-1 nil { > oc>f1.printf("%f\t%d\g"...