Search found 8 matches

by Igoy
Thu Apr 19, 2018 6:58 am
Forum: Other questions
Topic: Applying extracellular temperature
Replies: 1
Views: 658

Applying extracellular temperature

Hi - I currently export electric fields from COMSOL and apply them to a model neuron using the extracellular mechanism. I'd like to do the same, but in conjunction with the temperature distribution produced in my COMSOL model (temperature over space and time). I imagine a mechanism similar to the ex...
by Igoy
Tue Jul 14, 2015 9:18 pm
Forum: Getting started
Topic: Using Vector Play for continuous output
Replies: 1
Views: 4919

Using Vector Play for continuous output

Hi - I want to use the Vector.play() method to continuously apply a forcing function. The forcing function I want to use is a sine wave modeled as f(t) = A+B*sin(2*PI*f*t). I am able to use the GUI-based approach for graphing this forcing function, copying it to a clipboard, then using the GUI-based...
by Igoy
Wed Jul 08, 2015 11:40 am
Forum: Other questions
Topic: Extracellular Stimulation (2d)
Replies: 39
Views: 16969

Re: Extracellular Stimulation (2d)

I think I have the proper edits made for multiple electrodes and assigning the Fsin to the GLOBAL of xtra. May I send you my code, which I have commented extensively, to be sure?
by Igoy
Tue Jul 07, 2015 10:28 am
Forum: Other questions
Topic: Extracellular Stimulation (2d)
Replies: 39
Views: 16969

Re: Extracellular Stimulation (2d)

Turns out I made a very foolish mistake and didn't initialize the fsin object properly - thanks for pointing me in the right direction, Ted! That worked and both stimuli are generated. Question - I am setting pointer x from Fsin to is2_xtra. That works, and I see the effects of both stimuli on the v...
by Igoy
Mon Jul 06, 2015 10:33 pm
Forum: Other questions
Topic: Extracellular Stimulation (2d)
Replies: 39
Views: 16969

Re: Extracellular Stimulation (2d)

Nevermind to that - a little digging into the source code helped me figure out that the e_extracellular and i_membrane pointers were dangling. Just had to change all calls to is_xtra to is1_xtra and so on. This is really fun. Now an alternate question that I am facing. I'd like to include the fsin m...
by Igoy
Mon Jul 06, 2015 6:19 pm
Forum: Other questions
Topic: Extracellular Stimulation (2d)
Replies: 39
Views: 16969

Re: Extracellular Stimulation (2d)

Thanks, Ted - that did the trick. I've spent some more time creating additional plots and becoming familiar with the IO operations provided by NEURON. That was fun. Now I'm stuck again...I am following instructions from https://www.neuron.yale.edu/phpBB/viewtopic.php?f=8&t=1814&start=15#p8670 post t...
by Igoy
Thu Jul 02, 2015 2:57 pm
Forum: Other questions
Topic: Extracellular Stimulation (2d)
Replies: 39
Views: 16969

Re: Extracellular Stimulation (2d)

Thanks for the support, Ted. I took the revMRGaxon.hoc file and placed it in my directory and made the necessary change to initxstim.hoc, however the problem still persists. I went back and repeated all of my steps from my last post with a clean copy of the extracellular stimulation code, however I ...
by Igoy
Wed Jul 01, 2015 3:55 pm
Forum: Other questions
Topic: Extracellular Stimulation (2d)
Replies: 39
Views: 16969

Re: Extracellular Stimulation (2d)

Hi - Very new user here trying to learn how to model with Neuron. Currently, I am working with the McIntyre-Richardson-Grill model (MRGaxon) and attempting to use it with the extracellular mechanism provided in the "extracellular_stim_and_rec" zip file previously mentioned in this thread. I went thr...