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Hi Ted, Michael and anyone else, So I'm installing NEURON 7.6.5 under Windows 10 and everything seemed to go fine until the very end when I got a message that went something like "error setting path, length >1024". When I try to run nrngui, I get: bash: cygpath: command not found bash: nrn...

Okay, that makes a lot of sense. I thought it was going to be something vaguely along those lines. And thank you, that fixes the problem. But can I ask, WHY does it fix the problem? i.e. if BREAKPOINT is called twice? I would have thought by packing the RNG off to another function, and then calling ...

So I have been using a mod file for creating membrane noise based on a very simple Ornstein–Uhlenbeck process of current. However, the other day, I noted that if I increase the current then the membrane potential behaves very very strangely. Here is an image of the noise behaving normally in a simpl...

I am trying to find some notes on the linear circuit builder and I remembered that the 2008 course documents had a section on doing that. So I tried to access them here: https://www.neuron.yale.edu/neuron/static/courses/2008/course/handson.html or here https://www.neuron.yale.edu/neuron/static/cours...

You're a legend. I thought I had that bit all sorted out because the NEURONHOME and PYTHONPATH were all set already. But yes, still needed to add something to path. Excellent, thank you very much, I am in your debt.

So it's getting around to 4 years since the last thread on this was started, so I feel another one is in order. I've read through the other threads but the advice does not really make sense to me, or does it work when it does. Specifics: I'm running Windows 8.1 on a 64 bit machine, I'm running 64 Bi...

I answered Steve's question elsewhere, but I thought I'd paste in the same answer I gave there, in this forum, just incase anyone stumbles across it. I will hope that I'm not too terribly wrong. Obviously this is possible. Like everything in NEURON, you can make it as simple, or as complex as you wo...

Okay, excellent.. just wanted to check that as some of the numbers didn't quite seem right.

I have to interpolate before summation, because I'm using variable time step, and hence one runs time points are not at the same as another... or is there some fancy function I'm unaware of to deal with that?

So each segment reports current as mA/cm2 . It is tempting to vector.record them... then sum them all up with vector.add() into a new vector, and then divide that by the total section area. However, that is not correct (not even thinking about units at that point) because each segment could have a d...

Just a very simple Random Current generator NEURON { POINT_PROCESS Inoise RANGE tau, amp RANGE new_seed NONSPECIFIC_CURRENT i } PARAMETER { dt //ANOTHER QUESTION, DO I NEED THIS HERE????? tau = 50 (ms) amp = 0.001 (nA) } ASSIGNED { i } INITIAL { i = 0 } BREAKPOINT { i = i - (dt*i)/tau + dt*amp*normr...

A) I'm being told normrand is not thread safe. Is there anything I can do to make it so? Are any of the other random variables threadsafe? B) What is the logic behind this? In my head you could things could be threadsafe so long as you were essentially running completely independent equations of dif...

I might add that if I install 7.2, that 7.2 works fine.

So I've running the 32 bit version of nrn 7.3 on a brand new Windows 7 PC. (I tried the 64 bit version first, but it was giving me errors even when I tried to run makenrndll) Neuron itself appears to be working fine. If I run nrngui, change the working directory, and load the right .HOC file, everyt...

So I wanted to use the Print: Ascii feature of the Print & File Window Manager. The simulation is quite long. 12 seconds. Problems occurs when it starts to save passed 10 seconds. As can be seen from the datafile it saves 9999.9 -69.1285 -67.7425 9999.92 -69.1285 -67.7565 9999.94 -69.1286 -67.77...

So I was trying to implement a current based synapse. Simple right? I started with this code NEURON { POINT_PROCESS isyn RANGE del, amp, tau1, tau2, i ELECTRODE_CURRENT i } UNITS { (nA) = (nanoamp) (mV) = (millivolt) } PARAMETER { del=0 (ms) tau1=.5 (ms) <1e-3,1e6> tau2=1 (ms) <1e-3,1e6> amp=0 (nA) ...