www.neuron.yale.edu

So the 4th line of code in my model is: tstop = 100 And I would have thought, even if I didn't explicitely state what tstop was, it would have the defulat value of 5. Yet when I tried begintemplate SE_NetStim public pp objref pp proc init() { pp = new NetStim() pp.interval = $1 pp.number = $1*tstop*...

Thanks Ted, worked perfectly. The whole 'arguments that aren't really arguements' thing with the NET_RECEIVE block confused me.

Hi, A while ago I had a model of a depressing synapse that ran slowly because I had numerous differential equations. I've converted them to an analytical solution. It runs quickly, but I get the following error if I try to run it twice in a row, without quiting NEURON exp(5645.55) out of range, retu...

Hi, The model of a synaptic depression I wrote means that my network model takes 105s to run (instead of 45s using the in-built ExpSyn). I appreciate that I'm asking NEURON to solve 4 exponential equations rather than just 1 for each synaptic mechanism; but if that was the sole cause of the increase...

Either way, I came up with an acceptable model of synaptic depression. I'm sure it isn't as good as the other ones that are available in modelDB, but the difference is, I understand it. I'm just posting it up here because I thought someone else might find it useful NEURON { POINT_PROCESS expi NONSPE...

So I have two versions of a mod file that it my mind should produce identical results, but the first one works (the current decays back to zero) and the second one doesn't. Are you able to explain to me why not? NEURON { POINT_PROCESS expi NONSPECIFIC_CURRENT i RANGE i, e, g, gbar, kA, kB, kC } PARA...

Hi, I'm trying to figure out the differential equations that explain the recovery of a process. If the recovery from an inactive state to an active state is explained by the sum of three exponentials (with each time constant being an order of magnitude difference from the last), am I best to think o...

Because I need to create synapses of the fly, I have tried making a synapse class. In order to return the reference to the synapse point process, I have made a seperate function in the synapse class that returns it: begintemplate cell public soma, connect2target.... proc init() { ... } obfunc connec...

...sigh...
Thanks Ted.

I was hoping to be able to get the simulation to run several times but doing thing runtimes=20 xpanel("Run Control") xvalue("Simulation Repititions", "runtimes") xbutton("Run", "gorun()") xpanel() proc gorun() { for n=0, runtimes-1 { run() } } proc r...

Actually I found the problem. Its the fact that dt was getting reset by neuron halfway through the script, so arrays were different lengths.

Currently I'm trying to work on measure proposed by Dr. David Golomb http://www.scholarpedia.org/article/Synchrony_measures#Measure_of_synchrony_in_large_neuronal_networks However it doesn't seem to be working. Assuming I've got a vector storing the average membrane potential of the cells in the net...

Firstly, this counts as abandoning the standard run system, doesn't it, and hence is a bad idea, right? So what should I do instead? That is to say, is it really more efficient to record the voltage trajectories of 200 cells, and then step back through them (and what would be the best way to do this...

Hi, So with Teds help, I've got a lovely interneuron network making 40Hz oscillations. Now I'm planning on doing cruel things to it, and seeing what that does to the quality of the oscillations. I'm only used to the slice arena, where you'd use a spike triggered averaged from cell 1 to cell 2 to mea...

Hmmm... I recompilled nrnmech.dll and it still didn't work. Then I deleted nrnmech.dll and recompiled and it worked. Very strange. Thanks for all your help anyway.