Search found 19 matches

by asb
Mon Oct 07, 2019 7:24 pm
Forum: Modeling networks
Topic: mixed model of artificial and conduction-based cells
Replies: 20
Views: 7555

Re: mixed model of artificial and conduction-based cells

[REMOVED BY MODERATOR: a complete quotation of the previous post in this thread RATIONALE: what would be the rationale for including it in the first place?] Dear Ted, I stumbled across this (very helpful) post trying to implement an adaptive exponential I&F model in Neuron but preserving parameter ...
by asb
Wed Sep 18, 2019 9:11 pm
Forum: NetPyNE
Topic: Stimulating network using spike trains
Replies: 9
Views: 10528

Re: Stimulating network using spike trains

Hi Salvador, I have just started using netpyne and have a question about network stimulation. Apologies if this is obvious or tackled elsewhere. To get started I want to create a network of I&F neurons which all receive independent random (poisson) external stimuli. I'm trying to find the most effic...
by asb
Tue Nov 28, 2017 2:12 am
Forum: Other questions
Topic: computing impedances...
Replies: 15
Views: 14010

Re: computing impedances...

Thanks Ted, that's a terrific help (and has saved a lot of simulation time!)
by asb
Thu Nov 23, 2017 2:02 am
Forum: Other questions
Topic: computing impedances...
Replies: 15
Views: 14010

Re: computing impedances...

Hi Ted, I have a question about measuring impedance that relates somewhat to this thread. I have previously used a zap current to measure impedance but prefer the convenience of neuron's built in tool. However, I am interested in looking at impedance at both 'near' and sub-threshold potentials (ie, ...
by asb
Tue Aug 01, 2017 5:32 am
Forum: Other questions
Topic: total membrane current
Replies: 6
Views: 6218

Re: total membrane current

Hi Ted, I have a related question I am hoping you could help with. It is touched on here (https://www.neuron.yale.edu/phpbb/viewtopic.php?f=12&t=2437) but I would like to make sure I understand correctly. I want to determine the contribution of different mechanisms to the capacitive current (i_cap) ...
by asb
Wed Jul 26, 2017 8:24 am
Forum: Getting started
Topic: recording axial current
Replies: 4
Views: 8505

Re: recording axial current

Thanks Ted - much appreciated
by asb
Sat Jul 22, 2017 8:10 pm
Forum: Getting started
Topic: recording axial current
Replies: 4
Views: 8505

Re: recording axial current

Hi Ted, I have a (very) simple follow-up question about this. If I am interested in axial current flowing from a dendrite (nseg=3) to the soma (nseg =1) is it just a matter of: 1) record voltage at soma(0.5) and dendrite(1/6) 2) get Ri at dendrite(1/6) -- (I understand this is calculated at the pare...
by asb
Wed Mar 08, 2017 11:01 pm
Forum: Other questions
Topic: total membrane current
Replies: 6
Views: 6218

Re: total membrane current

Thanks Ted, much appreciated. Works perfectly with consistent results now.
by asb
Wed Mar 08, 2017 5:47 pm
Forum: Other questions
Topic: total membrane current
Replies: 6
Views: 6218

Re: total membrane current

Hi Ted, thanks for you reply. Yes apologies for the sloppy(incorrect) terminology - I was referring to total ionic current and capacitive current. I think the differences I see when calculating the above using either dvdt (eg your calculations above) or i_cap are numerical, as I am looking at values...
by asb
Wed Mar 08, 2017 5:32 am
Forum: Other questions
Topic: total membrane current
Replies: 6
Views: 6218

total membrane current

Hi, I have a question regardng use of either i_cap vs dvdt*capacitance for calculating ‘total membrane current’. My intent is to explore the relevance of I-V curves (using SEClamp) in a single compartment with HH conductances, to neuronal behaviour under ‘normal’ conditions. I have had a browse thro...
by asb
Fri Oct 07, 2016 11:47 am
Forum: MSWin
Topic: NRN 7.4 on windows 10
Replies: 24
Views: 20901

Re: NRN 7.4 on windows 10

I was unable to sort this out and ended up re-installing windows - this has fixed the problem However I have now encountered a different issue (I was unsure whether to post it under this thread, as it is still relevant to windows 10, or create a new thread so apologies in advance!) When I use braces...
by asb
Mon Sep 05, 2016 5:31 pm
Forum: MSWin
Topic: NRN 7.4 on windows 10
Replies: 24
Views: 20901

Re: NRN 7.4 on windows 10

I been assuming that you cannot successfully double click on any hoc file Is that the case with
c:/nrn/demo/demo.hoc ?
Yes none of the hoc files seem to initialise within the demo folder either. On the other hand if I open 'NEURON Demo' directly from the shortcut folder it works fine.
by asb
Fri Sep 02, 2016 10:49 pm
Forum: MSWin
Topic: NRN 7.4 on windows 10
Replies: 24
Views: 20901

Re: NRN 7.4 on windows 10

I searched through the machine and also removed all mention of neuron in the registry, but still no luck.

It looks like I'm consigned to using the 7.3 version...... thanks for your help anyway, and if I stumble across the problem I'll post the solution
by asb
Thu Sep 01, 2016 6:04 pm
Forum: MSWin
Topic: NRN 7.4 on windows 10
Replies: 24
Views: 20901

Re: NRN 7.4 on windows 10

This is a real puzzle and i'm stirring the bottom of the barrel for ideas about how to diagnose the problem. Try the following Start a dos command line window and see if the bash shell works. ie type Code: Select all c:\nrn\mingw\bin\bash.exe If you get the bash prompt then good. hit ^D to get back...
by asb
Tue Aug 30, 2016 7:48 pm
Forum: MSWin
Topic: NRN 7.4 on windows 10
Replies: 24
Views: 20901

Re: NRN 7.4 on windows 10

Yep, the blue icon with the AP appears.
I followed those steps again just in case, but unfortunately the same message keeps appearing.