Search found 13 matches

by bchenley
Sun Apr 18, 2010 5:33 pm
Forum: Other questions
Topic: Extracellular stimulation
Replies: 22
Views: 9014

Re: Extracellular stimulation

I realized that we needed to do define_shape() first... so now I got it. However, I have a another question... The readme file says this: "7. During a simulation, the extracellularly recorded potential vrec is computed by summing up the contributions from all of the segments that contain the xtra me...
by bchenley
Sun Apr 18, 2010 3:49 pm
Forum: Other questions
Topic: Extracellular stimulation
Replies: 22
Views: 9014

Re: Extracellular stimulation

A new cell model has been successfully implemented using the extracellular_stim_and_rec file. All the modification you mentioned were made. However, we are not seeing any responses. We are trying to plot the voltage response of a particular segment, so we do "Plot what?" to choose the segment we wan...
by bchenley
Sat Apr 17, 2010 9:25 pm
Forum: OS X
Topic: Nohting happens when I drag a .mod into mknrndll
Replies: 10
Views: 3302

Re: Nohting happens when I drag a .mod into mknrndll

Actually, when I double-click on it, it works... weird.. thanks!!
by bchenley
Sat Apr 17, 2010 9:19 pm
Forum: OS X
Topic: Nohting happens when I drag a .mod into mknrndll
Replies: 10
Views: 3302

Re: Nohting happens when I drag a .mod into mknrndll

When I double-click on the initxstim.hoc, NEURON quits suddenly...
by bchenley
Sat Apr 17, 2010 6:53 pm
Forum: OS X
Topic: Nohting happens when I drag a .mod into mknrndll
Replies: 10
Views: 3302

Re: Nohting happens when I drag a .mod into mknrndll

Thanks... I am still not able to get it to work. I downloaded the file you attached, dragged the NEURON 7.2 folder to the Applications folder, then the extracellular_stim_and_rec folder onto the mknrndll icon, and received this in the prompt: -e /Users/BC/Desktop/neuron/extracellular_stim_and_rec xt...
by bchenley
Fri Apr 16, 2010 5:33 pm
Forum: OS X
Topic: Nohting happens when I drag a .mod into mknrndll
Replies: 10
Views: 3302

Re: Nohting happens when I drag a .mod into mknrndll

Thanks... I know have 10.6, and when I drag xtra.mod to the mknrndll icon, this is entered into the prompt: -e /Users/BC/Desktop/neuron/extracellular_stim_and_rec xtra.mod xtra.mod "/Users/BC/Desktop/NEURON-7.1/nrn/share/nrn/libtool" --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I"/Users/BC/Desktop/N...
by bchenley
Fri Apr 16, 2010 12:26 am
Forum: OS X
Topic: Nohting happens when I drag a .mod into mknrndll
Replies: 10
Views: 3302

Re: Nohting happens when I drag a .mod into mknrndll

Thanks... Yes, I did. It looks like this in the prompt:

-e
drag a folder or set of mod files onto the mknrndll script
Press 'return' key to close
/Users/BC/Desktop/neuron/extracellular_stim_and_rec

... and nothing else happens...
by bchenley
Thu Apr 15, 2010 5:24 pm
Forum: Other questions
Topic: Extracellular stimulation
Replies: 22
Views: 9014

Re: Extracellular stimulation

Yes, I tried doing that with my cell and keep getting this error: "setpointers undefined function." When I use the given cell.ses, and delete one ore two axons and type setpointers() in the prompt, it works... ???
by bchenley
Thu Apr 15, 2010 4:57 pm
Forum: Modeling networks
Topic: Extracelluar stimulation with prepulse waveforms
Replies: 5
Views: 2813

Re: Extracelluar stimulation with prepulse waveforms

I have the extracellular stimulation working, but I am having trouble implementing the prepulses. I am trying to work with stim.hoc; it only gives you the option of changing the delay, duration, and amplitude for a single pulse. Is there a way in to incorporate more than one?
by bchenley
Thu Apr 15, 2010 3:54 pm
Forum: OS X
Topic: Nohting happens when I drag a .mod into mknrndll
Replies: 10
Views: 3302

Nohting happens when I drag a .mod into mknrndll

Nothing happens when I drag a model into mknrndll.

Using NEURON 7.1
Mac OS X (10.5.8)
by bchenley
Thu Apr 15, 2010 2:34 pm
Forum: Modeling networks
Topic: Extracelluar stimulation with prepulse waveforms
Replies: 5
Views: 2813

Re: Extracelluar stimulation with prepulse waveforms

Oh, what I meant by prepulse is that, for a given desired stimulus, there is an initial stimulus (usually of different amplitude and/or sign) right before it. Basically, I am trying to demonstrate prepulse inhibition (http://en.wikipedia.org/wiki/Prepulse_inhibition).
by bchenley
Thu Apr 15, 2010 1:11 am
Forum: Other questions
Topic: Extracellular stimulation
Replies: 22
Views: 9014

Re: Extracellular stimulation

In the "Notes," it says, "after any change to cell geometry or nseg, be sure to invoke setpointers()." How can I do this? I have created a new "cell.ses" and can't get it to work....
by bchenley
Tue Apr 13, 2010 11:50 am
Forum: Modeling networks
Topic: Extracelluar stimulation with prepulse waveforms
Replies: 5
Views: 2813

Extracelluar stimulation with prepulse waveforms

I am new to NEURON. I would like input on how to simulate: (1) extracellular stimulation (2) current prepulse waveforms