Search found 24 matches

by charles1
Fri Oct 27, 2017 12:22 pm
Forum: Anatomically detailed models
Topic: Vext and the extracellular mechanism
Replies: 3
Views: 18039

Re: Vext and the extracellular mechanism

Hi Ted, I am not sure I was well understood. I hope you do not mind if I clarify. If periaxonal delta represents its radius, then the first layer of the myelin sheath is at a distance delta from the axolemma. Notwithstanding the radius of the myelin sheath (considering it as collapsed and just outsi...
by charles1
Tue Oct 24, 2017 8:53 pm
Forum: Anatomically detailed models
Topic: Vext and the extracellular mechanism
Replies: 3
Views: 18039

Vext and the extracellular mechanism

I would first like to ask how Vext is calculated at a given node in a stretch of cable (of defined length and diameter) with one layer of extracellular inserted. Is Vext generated from the Im of that node multiplied by its lateral surface area, xraxial and length? Im here would be subtracted by the ...
by charles1
Mon Oct 27, 2014 7:18 am
Forum: MSWin
Topic: Problem compiling InterViews on cygwin: recipe for cursor.lo
Replies: 13
Views: 13319

Re: Problem compiling InterViews on cygwin: recipe for curso

Dr. Hines,

Compilation is complete and NEURON is running. Thank you for your help.

Best regards,
Charles
by charles1
Wed Oct 22, 2014 6:51 am
Forum: MSWin
Topic: Problem compiling InterViews on cygwin: recipe for cursor.lo
Replies: 13
Views: 13319

Re: Problem compiling InterViews on cygwin: recipe for curso

I downloaded nrniv10.ico as instructed from the hg repository. I re-extracted the tar.gz and copied the file into ../src/mswin. A new related error arises, consisting of "icon file `../../src/mswin/nrniv10.ico' does not contain icon data." Please see the relevant terminal output below. Thank you. Ch...
by charles1
Wed Oct 08, 2014 11:13 am
Forum: MSWin
Topic: Problem compiling InterViews on cygwin: recipe for cursor.lo
Replies: 13
Views: 13319

Re: Problem compiling InterViews on cygwin: recipe for curso

Dr. Hines, I am using the latest repository codes for IV (07.10.2014) and nrn (nrn-7.3.rel-1173). Compilation of IV occurs without a hitch. Configuration of nrn works, but making it does not. I tried a few different nrn configurations and essentially one type of error arises at the make level: the a...
by charles1
Mon Oct 06, 2014 5:47 am
Forum: MSWin
Topic: Problem compiling InterViews on cygwin: recipe for cursor.lo
Replies: 13
Views: 13319

Re: Problem compiling InterViews on cygwin: recipe for curso

Hello Dr. Hines,

I hope you do not mind my "manually" bumping this post.

Perhaps you may suggest me a specific cygwin subpackage I could downgrade to in the meantime, which would allow this problem to be solved?


Thanks!
Charles
by charles1
Mon Sep 15, 2014 10:32 am
Forum: MSWin
Topic: Problem compiling InterViews on cygwin: recipe for cursor.lo
Replies: 13
Views: 13319

Re: Problem compiling InterViews on cygwin: recipe for curso

Replacing #if defined(__SIZEOF_POINTER__) && __SIZEOF_POINTER__ > __SIZEOF_LONG__ with #if 1 || (defined(__SIZEOF_POINTER__) && __SIZEOF_POINTER__ > __SIZEOF_LONG__) in cursor.cpp (iv/src/lib/IV-Win) allowed cursor.lo to be made. Running sizeof.cpp as instructed yielded the same values you had obtai...
by charles1
Fri Sep 12, 2014 2:42 pm
Forum: MSWin
Topic: Problem compiling InterViews on cygwin: recipe for cursor.lo
Replies: 13
Views: 13319

Problem compiling InterViews on cygwin: recipe for cursor.lo

Hello, I am having trouble compiling InterViews (iv-18) with cygwin on Windows 8.1. The problem seems related to the recipe for cursor.lo (cursor.cpp) contained in src/lib/IV-Win. Configuration seems to run without a hitch. The problem arises at the make level. Please see below: CCo@CC ~/iv $ ./conf...
by charles1
Mon Aug 18, 2014 12:14 pm
Forum: Getting started
Topic: Extracellular: one layer
Replies: 1
Views: 1367

Extracellular: one layer

Hello, In NEURON 7.3, inserting extracellular in a given section with only the following parameters defined, xraxial[0], xg[0], xc[0] and e_extracellular leads to a default insertion in the same section of xraxial[1], xg[1] and xc[1] initialized to default values. I would like to implement a strateg...
by charles1
Wed Jul 30, 2014 7:45 am
Forum: Optimization
Topic: # quad forms = 0 means praxis returns by itself
Replies: 1
Views: 6743

# quad forms = 0 means praxis returns by itself

Hello,

I would like a clear explanation for the rules by which Praxis "returns by itself" when the user sets the "# quad forms" to 0 in the MulRunFitter[0] Optimize Praxis GUI.
by charles1
Mon Apr 01, 2013 10:12 pm
Forum: Getting started
Topic: How to use area(x) and L
Replies: 3
Views: 1706

Re: How to use area(x) and L

I created a bunch of segments that comprise a section with Neuroleucida. I import my morphology into NEURON and implement an nseg strategy based on d_lambda... It is the area of a subset of these bunch of segments that I still wish to obtain. I have understood how to use L: if I want the total lengt...
by charles1
Sun Mar 31, 2013 3:03 pm
Forum: Getting started
Topic: How to use area(x) and L
Replies: 3
Views: 1706

How to use area(x) and L

Hi, Very basic question... still learning how to talk to NEURON... Wondering how to get lengths and areas of segments that are subsections of a section in the oc> prompt. So for example, I wish to know the area of segments 0-5 of a given section that has 100 segments. How would I ask the oc> prompt ...
by charles1
Sun Mar 31, 2013 2:35 pm
Forum: Optimization
Topic: MRF, dt, Brent's and error
Replies: 3
Views: 6567

Re: MRF, dt, Brent's and error

Yes, well, I'm new at this deeper stuff, so pardon my inexperience. OK so the general idea is to make dt as small as possible? Obviously much smaller than any time interval (of your curve being fitted). But how much smaller? Is there such a thing as "too small and bad"? For example, if using either ...
by charles1
Sat Mar 30, 2013 11:58 pm
Forum: Optimization
Topic: MRF, dt, Brent's and error
Replies: 3
Views: 6567

MRF, dt, Brent's and error

Hi,

When running the MRF (let's say following tutorials 1 and 2). Curious about the relationship between dt (in RunControl) and the error of Brent's Praxis fitting?

Thanks.
-Charles
by charles1
Mon Mar 25, 2013 1:16 pm
Forum: Anatomically detailed models
Topic: d_lambda optimization
Replies: 2
Views: 5847

Re: d_lambda optimization

Hi Ted,

Thank you for the wonderful, complete answer. I am especially grateful for your suggestion to use worst-case (largest) values for Ra and Cm, if pursuing option 1.

-Charles