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Hi, I was given a model cell that has synapses (Exp2Syn type) and I want to calculate the synaptic conductance over that model cell. To do that, my strategy was the following: 1- for each section in the cell, find the pointprocesses of the Exp2Syn type 2- iterate over these PPs to: 2-1- find the net...

Hi all, I have a model whose topology is a ball (soma) and several sticks (dendrites). I use the impedance class in order to calculate the electrotonic distance of each dendritic segment from the soma using the following code: finitialize(-65) zz = new Impedance() soma { zz.loc(0.5) } zz.compute($1,...

That's really a nice structure. The use of obfunc in conjunction with object lists handeled the vectors in a really easy way. Thanks, Ted!!!!

Hi, I have a list of cell objects and want to record the somatic potential of each cell in the list. I wrote the following code to insert an IClamp in each cell and record Vsoma and injected current for further processing. However, I get a syntax error that I couldn''t figure out. Your help will be ...

Hi All,

Ted was able to fix the problem. The fix was placing an finitialize(-65) statement at the beginning of the Compute_Zin() procedure. This statrement was necessary for initializing the gating states properly.

My question is relevant to this topic so I am posting my question here. We have been running into trouble viewing the soma of our 3D imported neuron created in Neurolucida into NEURON. Following the previous posts in this forum, we set all the soma contours to cell body as well as organizing them in...

psection() works fine before or after calling the impedance calculations. Also, finitialize(-65) works fine (prints 1 on the command line) with no error messages before or after the impedance calculations.

Hi all, I used the following function to measure the input impedance of a neuron model; however, when I printed the variable Zin I got "nan". Any advice on what could be the reason for that? proc Compute_Zin() { localobj z z = new Impedance() soma { z.loc(0.5) } z.compute(1, 1) Zin = 0 som...

Hi, I have a network of 50 cells whose output is displayed as a raster of spikes in a Spikeplot graph. I want to save these data to an external .dat file. I found that when I use the "pick vector" tool it selects only the raster of one cell, not all cells. Is there a way to save these data...

Hi, I am trying to import a 3D reconstructed morphology (.asc file) of a neuron using the 3D import tool in Neuron. After importing the file I got a message from Neuron on possible roon-branch errors in which it suggests connecting some branches to nearest soma. I looked at the values of these offse...

Hi Ted, Wow. This is exactly what I wanted. Thanks Ted very much. It was not clear, at least for me, from the description of MechanismType Class that the created list will have the mechanisms available at the currently accessed section. I thought it will have the mechanisms available in all sections...

Hi, I would appreciate your advice on how to access/modify the settings of a pointprocess object such as an Exp2Syn present in a section. In simple terms, I have a neuron model with many sections. Some of these sections have synapses (Exp2Syn), while others do not. I am iterating over the sections (...

Hello, I got the same error message "section stack overflow" and found where the recursive call of a function took place. Is there a way to increase the stack size over the 20 limit at least for now? I am in the middle of a project and rather to use the same code before going back and modi...

Many thanks Ted.

One thing to confirm. When I say the loop will iterate over sections whose names start with "den" according to their creation order not alphabetical order?

Hello, I have a sectionlist that has the names of more than 50 sections of my model. I want to iterate over the first 10 sections and run Statement 1, and the second 10 sections and run Statement 2, and so on. In other words, I want to know a way of using the sectionlist as a vector of strings that ...