Search found 12 matches

by staceyw
Sat Oct 24, 2009 10:37 pm
Forum: Modeling networks
Topic: Ephaptic connections in network
Replies: 4
Views: 2881

Re: Ephaptic connections in network

Yes, ephaptic field effects. It is a CNS model of pyramidal cells. Axons are not really a part of it. I am modeling the effect of bursting cells on their neighbors--essentially the local currents produced by active cells, and how they might recruit nearby cells. These effects become more prominent w...
by staceyw
Fri Oct 23, 2009 6:07 pm
Forum: Modeling networks
Topic: Ephaptic connections in network
Replies: 4
Views: 2881

Ephaptic connections in network

I'm trying to add ephaptic connections to a ~100 neuron network. I'd like to have one group of them produce a net output, and have the other group "see" it. Unfortunately, the network is a parallel context version, and I'm not sure how to even start. I do not need very sophisticated devices here, ju...
by staceyw
Thu Jul 16, 2009 2:58 pm
Forum: Parallel NEURON
Topic: multithreading without the GUI
Replies: 1
Views: 4380

multithreading without the GUI

I have a working model, written to be MPI-ready, that was running on 6.1. What needs to be done to run this with multithreading capabilities in 7.0? I do not use the GUI, and run long batches, so it needs to be either commandline changes or something to write into the .hoc files (sorry, I haven't be...
by staceyw
Thu Jun 05, 2008 1:39 pm
Forum: Parallel NEURON
Topic: How does spikevec treat artificial cells?
Replies: 9
Views: 4456

Thanks. Didn't realize the spikevec just gathered from the NetCon events. That brings up the important issue that if I'm "watching the network" with spikevec raster plots, I have to be sure all cells of interest are NetCon sources, and not just "dead ends".
by staceyw
Wed Jun 04, 2008 3:35 pm
Forum: Parallel NEURON
Topic: How does spikevec treat artificial cells?
Replies: 9
Views: 4456

OK it's working now. I did have some confusion understanding that I could make another List() of those NetCons in the "normal" fashion that would coexist with the parallelnetmanager.nclist. But they live perfectly well together, just making additional NetCon objects. And in answer to my original pos...
by staceyw
Tue Jun 03, 2008 11:06 am
Forum: Parallel NEURON
Topic: How does spikevec treat artificial cells?
Replies: 9
Views: 4456

since the first 1000 netcons are created with a ind = pnm.nc_append(preGID, postGID, synID, g, delay) call, how do I implement the new netcons within PNM structure, if there is no GID for the netcon source? It is not apparent to me how to combine your example with my pnm.nclist (or append to it with...
by staceyw
Mon Jun 02, 2008 6:44 pm
Forum: Parallel NEURON
Topic: How does spikevec treat artificial cells?
Replies: 9
Views: 4456

So I'm almost certain those art cell events were initialized via a netstim call (this is exactly what would happen if the original art_cell=NetStim() was set to delay 50, interval 10, number 10). So I'm guessing the answer to the first question is that I should have seen <NONE> of the random netcon ...
by staceyw
Mon Jun 02, 2008 4:38 pm
Forum: Parallel NEURON
Topic: How does spikevec treat artificial cells?
Replies: 9
Views: 4456

How does spikevec treat artificial cells?

I've a question about the operation of the pnm.gatherspikes(). I have a network with biophysical cells, for which the spikevec is working just fine. I recently added some artificial cells that also appear to be working correctly. These cells' only action is to produce random synaptic potentials on t...
by staceyw
Thu May 22, 2008 4:38 pm
Forum: Modeling networks
Topic: Adding random synaptic events
Replies: 1
Views: 1875

Adding random synaptic events

I am trying to learn the syntax for adding synaptic events to a network. I have created the "toy network" .hoc file per the tutorial ( http://www.neuron.yale.edu/neuron/static/docs/netbuild/hybrid/outline.html ), with its list of two cells and a NetStim. This .hoc makes use of cell_append list and a...
by staceyw
Thu May 22, 2008 10:57 am
Forum: Getting started
Topic: Cannot save
Replies: 4
Views: 2125

Thanks, but I figured it out--the 6.1 is working fine. User error.
by staceyw
Thu May 22, 2008 10:18 am
Forum: Getting started
Topic: Cannot save
Replies: 4
Views: 2125

Actually, there are two "save" buttons. Whether I click the dropdown "save session" button from the main gui, or the "export to file" button on the cellbuilder, both times a file select window pops up, with a prompt to enter the filename and a "save" button. Pressing either of these save buttons doe...
by staceyw
Wed May 21, 2008 4:32 pm
Forum: Getting started
Topic: Cannot save
Replies: 4
Views: 2125

Cannot save

I am running WinXP on my own computer (no other users/admin). I previously had installed version 6.0.3, and it was running fine. Then after a long delay I got back into gui work and tried saving .hoc and .ses files and got error messages stating the files could not be opened for writing, and was una...