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Hello, I have a question about using mod files that utilize random number generators in parallelized network simulations. Specifically I use Gfluct.mod ( https://senselab.med.yale.edu/modeldb/ShowModel.cshtml?model=8115&file=/fluct/Gfluct.mod#tabs-2 - from what I've read, this file also appears ...

Just an update to this. I recently updated to macOS Catalina vs10.15, and had a lot of problems with my anaconda installation as a result. In getting fed up with it and just deleting anaconda (I only had it installed to test it out - was never really dependent on it) and then re-installing all the p...

I'm also curious why it's not finding and linking ncurses through "@rpath/libncursesw.6.dylib". When I run a search, only 1 libncursesw.6.dylib pops up: (base) Alexandres-MacBook-Pro:.libs agmccrei$ mdfind libncursesw.6.dylib /anaconda3/lib/libncursesw.6.dylib /Users/agmccrei/Downloads/Pur...

When I run neurondemo, the gui pops up fine and all the demos appear to run fine with no errors. I don't see a "Release" button in any of the GUI windows, but clicking on "Init & Run" in any of the demos does not generate any errors and the simulations run to completion. My m...

Update: I can fix the problem in a very manual way. From the directory: nrnivmodl cd x86_64/.libs/ -L libnrnmech.0.so This outputs the following: libnrnmech.0.so: /Applications/NEURON-7.7/nrn/x86_64/lib/libnrnoc.0.dylib (compatibility version 1.0.0, current version 1.0.0) /Applications/NEURON-7.7/nr...

Thanks. 1. It's a new laptop (about a week old now). No previous installations of NEURON. When I first installed everything it worked fine. Seemingly out of the blue yesterday, I started getting that error message when I tried to load a model from modeldb (at first I thought it was just that model b...

Hello, I'm running into some strange errors in loading my channel mechanisms with my Python/NEURON installation. I have tried re-installing NEURON and XQuartz but the error report persists. Here are my system details: macOS Mojave (10.14.6) NEURON VERSION 7.7.2 Python 3.7.3 XQuartz 2.7.11 Xcode vers...

UPDATE: Turns out my error was pretty trivial (as is usually the case). I was using code from a previous project, and I had forgotten to adjust it for conditions where the input spike rate was 0 Hz. The problem was that I had a conditional statement in my hoc code that prevented the NetStim paramete...

Thanks Ted, I return both the index values as well as the actual parameters values (i.e. injected current and input frequency). The odd thing about my problem is that everything gets indexed in the correct order, despite the results appearing out of order. When I print out output lists (i.e. that we...

Hello, I am doing a grid-like set of simulations on a single-neuron model (python/neuron) with increasing holding currents (i.e. using IClamp at the soma; all spike-generating current levels) and increasing synaptic input frequencies (i.e. using Exp2Syn processes at various dendritic locations). I'v...

Right, so my understanding of how fractional randomness is implemented is that for each interspike interval, the interval is dependent on the values set for s.interval and s.noise (assuming s = new NetStim(x)). Specifically, the magnitude of the value of s.noise (from 0 to 1) will control the propor...

Hello, I don't have a strong formal background in mathematics here, but I want to describe some of the mechanisms used in NEURON. Specifically, I am not sure if I have the correct mathematical notation for describing how fractional randomness is implemented in NEURON's NetStim function. So far, I ha...

I actually found what looks to be a (embarrassingly) simple solution to my initial query. In fact, I am somewhat embarrassed I had not realized this before. Instead of running the ParallelContext twice for two separate problems, I could just run my hoc "simulation" function (i.e. h.f()) at...

One quick thing to add is that in the simplified code, when I do not create the ParallelContext in the hoc file (i.e. I comment out execution of the "SynParamSearch.hoc" file in the "init.py" file) and I create it in the python code with pc = h.ParallelContext(), the parallelizat...

Hello, I am fairly new to parallel processing and I am running into a somewhat odd problem while trying to access and re-use a previously used ParallelContext(). When I first use a ParallelContext in my hoc code to run a parameter search (i.e. simulate many iterations of my models) using a bulletin ...