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For a 1000 cell model I am working on, I want to generate background (spontaneous) activity/noise with Poisson distribution around a specified frequency. The problem i am encountering now is that when i generate a background activity there are too many outliers with many bins exceeding z-scores more...

Thanks for the reply! Actually, i am doing it in pNEURON. And the run() is implemented as pc.psolve(tstop) The full code i tested is objref pc pc = new ParallelContext() objref TRec TRec = new Vector() SaveDataDt = 0.1 proc RecTime() { TRec.record(&t,SaveDataDt) } RecTime() tstop = 10000 {pc.set...

Hi, In my parallel model, I am trying to record the time while i record some time-dependent variables. I can record and save those variables correctly, but the recording of time gives all zero to the recording vector. Here is my code for time recording. objref TRec TRec = new Vector() SaveDataDt = 0...

Hi, http://www.neuron.yale.edu/neuron/static/docs/help/neuron/general/classes/graph.html#size When I read this reference, I was not able to use this code. g.size(&dbl[0]) I got error as oc>Graph[0].size(&dbl[0]) /opt/nrn/x86_64/bin/nrniv: dbl not an array variable near line 25 Graph[0].size(...

Here's a big one: NetCon threshold has no effect when attached to an artificial spiking cell that uses net_event to produce output events, as NEURON's built-in IntFire1, IntFire2, and IntFire4 do. The reason is that such artificial spiking cells perform their own test for threshold crossing in thei...

Thank you so much Ted! This method works fine to me. Finally, i built a template for this feature. I share it here. Please let me know if there any mistakes. Thanks again! //"PRelease.hoc" //Proportional Release Property // // Usage: // load_file("PRelease.hoc") // ... // objref ...

Hi, Is there any build-in function in NEURON can deliver a proportion of presynaptic spikes to postsynapse? For example: When the ratio P = 50% Presynase output: ______||||||||_____ Postsynapse input: _____|_|_|_|______ When the ratio P = 25% Presynase output: ______||||||||_____ Postsynapse input: ...

Hi

We have a simulation which record v into a vector then save to a file. But the saving to file process after the whole simulation. How to program to save to data file each timestep in the simulation.

Thanks!
-Henry

Thanks for reply, Ted! I put all .mod files in a subfolder called "mechanisms" in Ubuntu, because I have 20 .mod files. Then I use the command nrnivmodl mechanisms to compile the .mod files. It works fine in Ubuntu. But when I copy those files to Windows, I dont know how to compile the .mo...

Hi,

Thanks for previous help!

I am using NEURON under Ubuntu, I always separate .mod files in a subfolder. But I cannot make it work the same in Windows for connecting .mod files in subfolder. Is there any solution for this problem?

Thanks in advance!

Best,
-Henry

Hi,

Could I input multiple Netstim into one NetCon?
Or if there is any function like (boolean) AND for combining two netstim?

BTW, how to plot NetStim?

Thanks in advance!

-Henry

Thank you very much Ted!

The NetStim can work! And this post is helpful (http://www.neuron.yale.edu/phpBB/viewto ... ered#p6554)

Thanks!

So you merely want to generate a train of spikes, whose parameters (start time, ISI, number) you control? Or do you have experimental data that you want to pass through a filter whose output is a spike train in which the time of each spike is governed by some aspect of the experimental data (e.g. a...

What's a "tone pulse"? What are you trying to do: generate a stimulus in the middle of a simulation, or record results and analyze them after the end of a simulation? Thank you Ted! A tone pulse is just a series of square waves with a certain frequency, such as sound wave. Now I have a so...

Hi! I am looking for the method to convert a serie of tone pulse into the synaptic input (spikes) in NEURON. I searched in the ModelDB and the Programmer's Reference. Then I tried to use the v.spikebin by using codes like this: spikevec=new Vector() vrec=new Vector() vrec.record(&toneA.i) //tone...