Search found 5672 matches

by ted
Sun May 22, 2005 11:49 am
Forum: Modeling networks
Topic: Non-rectifying electrical synapses
Replies: 3
Views: 7378

On 3/24/2005 Ted Carnevale <ted.carnevale@yale.edu> wrote: A nonrectifying electrical synapse is basically an ohmic connection between two nonadjacent segments. You can implement this in one of two ways. The "classical" approach is to use a pair of point processes as described in ftp://ftp.neuron.ya...
by ted
Sun May 22, 2005 11:47 am
Forum: Modeling networks
Topic: Non-rectifying electrical synapses
Replies: 3
Views: 7378

Non-rectifying electrical synapses

On 3/24/2005 Ginny Cruz <gcruz@newssun.med.miami.edu> wrote: I've only recently started to learn Neuron and would like to create a (small circuit) model of neurons that are connected together, not by chemical synapses, but by non-rectifying electrical synapses. Moreover, these synapses are axo-axona...
by ted
Sun May 22, 2005 11:43 am
Forum: Optimization
Topic: Logging parameter and error values during optimization
Replies: 6
Views: 10803

On 3/21/2005 Michael Hines <michael.hines@yale.edu> wrote: The Optimize panel of the MulRunFitter has a checkbox for appending the path the fitter takes to "savepath.fit". However this is not every run but only the best result after each quadratic form. You can look at nrn/lib/hoc/mulfit/fitparm.hoc...
by ted
Sun May 22, 2005 11:41 am
Forum: Optimization
Topic: Logging parameter and error values during optimization
Replies: 6
Views: 10803

Logging parameter and error values during optimization

On 3/16/2005 Randy Powers <rkpowers@u.washington.edu> asked: 1. Is there any way to get the MultiRun fitter to save a log of the parameter and error values for all of the runs? 2. Does anyone have an example of a hoc file that uses multiple fitters to simultaneously fit voltage- and current-clamp da...
by ted
Sun May 22, 2005 11:35 am
Forum: Modeling networks
Topic: Inhibitory ring of with circulating waves of activity.
Replies: 2
Views: 4008

In retrospect, I see that a few additional comments are necessary. > It involved getting a three cell reciprocally connected integrate-and-fire model The connections in this net are not reciprocal. They are cyclical. That is, A inhibits B which inhibits C which inhibits A, and A B & C are all driven...
by ted
Sun May 22, 2005 11:19 am
Forum: Modeling networks
Topic: Inhibitory ring of with circulating waves of activity.
Replies: 2
Views: 4008

On 3/10/2005 Ted Carnevale <ted.carnevale@yale.edu> wrote: > At the Neuron training session at the University of Minnesota > several years ago, either yourself or your colleague showed > me an interesting demonstration using Neuron. It involved getting > a three cell reciprocally connected integrate...
by ted
Sun May 22, 2005 11:17 am
Forum: Modeling networks
Topic: Inhibitory ring of with circulating waves of activity.
Replies: 2
Views: 4008

Inhibitory ring of with circulating waves of activity.

On 3/10/2005 Kevin Crisp <kevin_michael_crisp@yahoo.com> wrote: At the Neuron training session at the University of Minnesota several years ago, either yourself or your colleague showed me an interesting demonstration using Neuron. It involved getting a three cell reciprocally connected integrate-an...
by ted
Sun May 22, 2005 11:12 am
Forum: The GUI
Topic: changing colors in the shape plot
Replies: 1
Views: 5244

On 3/8/2005 Ted Carnevale <ted.carnevale@yale.edu> wrote: Good question. Go to the FAQ list http://www.neuron.yale.edu/neuron/faq/general-questions and look for the item Q: How do I change the color scale used in shape plots? On 2/18/2006, Ted Carnevale added the following: Also, the PlotShape class...
by ted
Sun May 22, 2005 11:11 am
Forum: The GUI
Topic: changing colors in the shape plot
Replies: 1
Views: 5244

changing colors in the shape plot

On 3/8/2005 Juan Antonio Laville Conde <jlaville@ifc.unam.mx> wrote:
I have tried to change the colors in the shape plot without success. Is
there a way to customize the colors and the scale (more than 13 colors) in the
shape plot?
by ted
Sun May 22, 2005 11:01 am
Forum: Other questions
Topic: +3 is not a number
Replies: 1
Views: 2855

On 3/1/2005 Michael Hines <michael.hines@yale.edu> wrote: Well, now that you mention it... What do you think of this: oc>---4 -4 oc>----4 4 All this is defined in the nrn/src/oc/parse.y where %left '+' '-' /* left associative, same precedence */ %left '*' '/' '%' /* left assoc., higher precedence */...
by ted
Sun May 22, 2005 11:00 am
Forum: Other questions
Topic: +3 is not a number
Replies: 1
Views: 2855

+3 is not a number

On 3/1/2005 Jose Ambros-Ingerson <jose@kiubo.net> wrote:
I just discovered that
oc> a = +3
gives you a parse error.
Isn't this kind of strange?
by ted
Sun May 22, 2005 10:56 am
Forum: Optimization
Topic: Multiple Run Fitter: changing individual generator weights?
Replies: 1
Views: 4432

On 3/1/2005 Michael Hines <michael.hines@yale.edu> wrote: A Run Fitness generator and FunctionFitness generator has a total weight value that can be changed from the Data Weight panel that you get from the Regions/WeightPanel menu. If you use a FitnessPrimitive, the total weight is specified by the ...
by ted
Sun May 22, 2005 10:55 am
Forum: Optimization
Topic: Multiple Run Fitter: changing individual generator weights?
Replies: 1
Views: 4432

Multiple Run Fitter: changing individual generator weights?

On 2/28/2005 a NEURON user wrote: > I am using multiple run fitter to make channel > model. When you have multiple generator inside a > single incident of Multiple Run Fitter, is there > anyway to change weight of this individual generator > to combine error value. Like when you are fitting a > data...
by ted
Sun May 22, 2005 12:00 am
Forum: ModelDB and other online sources of models
Topic: Invitation to model authors to use ModelDB
Replies: 0
Views: 15106

Invitation to model authors to use ModelDB

Michael Hines <michael.hines@yale.edu> wrote> As of 5/20/2005, source code for 162 published models is freely available from ModelDB http://senselab.med.yale.edu/senselab/modeldb/ ModelDB is a searchable database for convenient storage, viewing, and retrieval of source code for published computation...
by ted
Sat May 21, 2005 11:48 pm
Forum: Adding new mechanisms and functions to NEURON
Topic: Modeling calcium diffusion
Replies: 0
Views: 3258

Modeling calcium diffusion

A NEURON user wrote: > I was trying to find some documentation regarding calcium diffusion > in a multi-compartment model. I went through some example models in > ModelDB, but couldn't understand how exactly it works. Is there any > link/chapter that I can go through that'll help me understand the >...