www.neuron.yale.edu

What in my earlier reply led you to infer otherwise? No. Before u said that the BREAKPOINT block computes current at each time step, i thought that i was done so by default. That is the reason why i asked that question. One last question. In the reference (the one for NET_RECEIVE) which you had men...

I understand the role of g (in spikeout.mod). But What should be the ideal value of g ? When i change the value of g from 100 to 10 it doesnt have any effect on firing rate. The COBA cell, however, is a "conductance based" model, i.e. its synaptic inputs actually produce conductance change...

Thanks Ted. Your answer was explanative. But why it is clamped at 100 ? Because when i modify its value to some other number it doesn't produce any change.

Thanks for the reply. It makes sense. Another small question. In the spikeout.mod file, what is the use of Break point block and the conductance variable g. I dont see a similar thing in Intfire1 class neuron.

Thank you.

I was goin through the COBA benchmark model found in the NEURON Model DB. http://senselab.med.yale.edu/modeldb/ShowModel.asp?model=83319&file=%5Cdestexhe_benchmarks%5CNEURON%5Ccommon%5Cinit.hoc In the appendix file, it says that " Synaptic interactions were implemented as follows: when a sp...

Dear Ted, I see that Traub et al model (2005) was written serially and it was parallelized by parallel transfer methods. ( Correct me if I am wrong, because I am a beginner to Parallel NEURON). I have a big cerebellar model which is parallelized with parallel context class. I am currently working on...

Dear Ted, Can you give some suggestions on implementing gap junctions in parallel NEURON. I have implemented it in serial mode. I want to convert it to parallel mode. Do you think that it is a good idea to create all cells(involving gap junctions) on a single host ? Or do you think that is there an ...

Thanks ted. The bug was very very simple. When running in parallel mode i didnt execute nrnivmodl. Since the mod files were already compiled in serial mode i thought i dont need to compile them again. I used to compile the mod files in serial mode by drag and drop. That is the reason why it worked i...

Hi , I have a neuronal network model. The serial implementation of the model works perfectly. The parallel version of the model works perfectly in serial mode ( when double clicking the hoc file). But it does not work with mpiexec -np -mpi command. Though it doesnt give me any error, I am not able t...

Thanks Ted. It wasnt declared. Usually if a variable is undeclared it generates an error that says that the variable is not declared. I dont know why it gave me a strange error this time.

Hi, I am currently in the process of tuning a LIF neuron according to the characteristics of a particular F-I curve. I use Netcon to record from soma. I am getting a strange bug which says the following. bad stack access: expecting(double);really(unknown) nrniv: interpreter stack type error ...... n...

Thanks Ted. It works fine.

Hi Ted,

When i run NEURON through(nrniv) by double clicking the hoc file, I can enter any variable name in the nrniv window and get its value. How can i do this when i run NEURON in a parallel environment using the terminal ?

Thanks,
shyam

Dear Ted, Well i tried that way previously. here is my code. load_file("nrngui.hoc") load_file("vecevent.ses") objref vec,net,nil,fih,pc,vec1,vs,r objectvar f pc = new ParallelContext() vec = new Vector() vec1 = new Vector() r = new Vector() vs = new VecStim() f = new File() f.ro...

Hi Ted, Thanks for your reply. In the current implementation, all the Netstim spikes are generated in one host(say host 0). The target neurons are generated equally in all hosts. The suggestion is wise and definitely further modelling has to be done take this point into account. Regarding Vecstim, I...