Search found 28 matches

by stil
Wed Jun 22, 2011 10:08 am
Forum: Anatomically detailed models
Topic: Spine Template
Replies: 3
Views: 2285

Re: Spine Template

Sure,

is it ok like this ?
by stil
Wed Jun 22, 2011 8:29 am
Forum: Adding new mechanisms and functions to NEURON
Topic: NetCon : how to write the reference to 'source'
Replies: 3
Views: 1874

NetCon : how to write the reference to 'source'

Hello, i am building an thrshold-crossing detection using the NetCon Class. On one hand, i have a POINT PROCESS "src", defined in NMODL, that has a state "srcState", which is my source for NetCon On the other hand, i have another POINT PROCESS "trgt", in a NMODL, having a NET_RECEIVE block, with a i...
by stil
Wed Jun 22, 2011 8:08 am
Forum: NEURON + Python
Topic: Matplotlib Backend and segmentation fault
Replies: 1
Views: 1625

Matplotlib Backend and segmentation fault

For those who use python and matplotlib for plotting results : Just a note about the setting of the matplotlib backend setting ( http://matplotlib.sourceforge.net/faq/installing_faq.html ). When i used "GTKAgg", most of my models raised "segmentation fault", so i changed to "Qt4Agg". Hope it will he...
by stil
Wed Jun 22, 2011 6:05 am
Forum: Adding new mechanisms and functions to NEURON
Topic: WATCH accuracy
Replies: 6
Views: 2885

Re: WATCH accuracy

Thanks Ted, i tried your workaround, and it works fine with constant step-size. But, i would like to use variable stepsize, and it seems that the statements in the BREAKPOINT block were not evaluated. For example, this modification in the code has no effect on the results (i.e i have an overshoot): ...
by stil
Tue Jun 21, 2011 10:56 am
Forum: Adding new mechanisms and functions to NEURON
Topic: WATCH accuracy
Replies: 6
Views: 2885

WATCH accuracy

Hello, I am trying to build a threshold-detection mechanism, with a state reinitialization, embedded in a NMODL. after trying several things using at_time() and state_discontinuity(,) without success, I realized that the event-delivery system could help me. For test purposes, i've build a minimal NM...
by stil
Wed Jun 08, 2011 5:23 am
Forum: Adding new mechanisms and functions to NEURON
Topic: multiple SOLVE
Replies: 4
Views: 2965

Re: multiple SOLVE

Okay, i understand.

Thanks a lot for these explanations!
by stil
Tue Jun 07, 2011 11:16 am
Forum: Adding new mechanisms and functions to NEURON
Topic: multiple SOLVE
Replies: 4
Views: 2965

multiple SOLVE

Hello all, I am wondering what could be the problem using multiple SOLVE statements in the same breakpoint block ... ? How should I do if I want to have a kinetic scheme on one side, and a set of rates equations on the other, such as in : BREAKPOINT { SOLVE kstates METHOD sparse SOLVE states METHOD ...
by stil
Wed May 11, 2011 1:09 pm
Forum: Anatomically detailed models
Topic: Spine Template
Replies: 3
Views: 2285

Re: My first template : nil object is not a SectionList

ok, i've found out : the all sectionList is not visible from the inside of init() procedure. Hence i replaced the templte definition by the following : begintemplate Spine external lambda_f public spine, neck public init create spine, neck proc init() { // topology connect spine(1), neck(0) // geome...
by stil
Wed May 11, 2011 12:30 pm
Forum: Anatomically detailed models
Topic: Spine Template
Replies: 3
Views: 2285

Spine Template

Hello, I am trying to build a "Spine" model that i could instantiate multiple times... Thus i thought using a template (shouldn't I ?) that currently has the form : begintemplate Spine public spine, neck create spine, neck objref all all = new SectionList() neck all.append() spine all.append() exter...
by stil
Thu Apr 14, 2011 9:55 am
Forum: UNIX/Linux
Topic: ImportError instance has no attribute 'message'
Replies: 2
Views: 2589

Re: ImportError instance has no attribute 'message'

Hello, thank you for your fast answer, it actually solved my problem. As a result, here is what i did : Place nrn-7.2.alpha-500.tar.gz in /usr/local/neuron > tar xzf nrn-7.2.alpha-500.tar.gz; mv nrn-7.2 nrn > cd /usr/local/neuron/nrn > ./configure --prefix=`pwd` --without-iv --with-nrnpython > make ...
by stil
Wed Apr 13, 2011 1:06 pm
Forum: UNIX/Linux
Topic: ImportError instance has no attribute 'message'
Replies: 2
Views: 2589

ImportError instance has no attribute 'message'

Hello, I am struggling with the installation of neuron, as a python module, on a computer node, equiped with centOS. Step by step, i installed required packages so that configure, make, make install and setup.py work, but, eventually, i still an error when trying "import neuron" in a python console,...
by stil
Fri Mar 18, 2011 1:02 pm
Forum: NEURON + Python
Topic: what is inside seg.x
Replies: 1
Views: 2062

what is inside seg.x

Hello, I must have misunderstood something about segments. with the following code : import neuron from neuron import h spine = h.Section() spine.L = 10 spine.nseg = 10 for seg in spine.allseg(): print repr(seg.x) The output is the following : 0.0 0.050000000000000003 0.15000000000000002 0.25 0.3499...
by stil
Thu Jul 01, 2010 8:50 am
Forum: NEURON Announcements
Topic: Future NEURON courses
Replies: 3
Views: 14178

Future NEURON courses

Hello everybody,

I was wondering if any courses, or Neuron training sessions took place in Europe at any time ?

If not, could anyone tell me more about the future courses in the US ?

Thanks for your help,