Search found 27 matches

by Sherif
Sun Feb 17, 2008 12:05 am
Forum: Anatomically detailed models
Topic: Modifying morphological data
Replies: 5
Views: 3352

Thanks Ted very much for your reply. This was really helpful.

-S
by Sherif
Fri Feb 15, 2008 1:43 pm
Forum: Anatomically detailed models
Topic: Modifying morphological data
Replies: 5
Views: 3352

Modifying morphological data

Hello, I work with detailed morphological models in which the dendrites are described by 3D points imported from an external file to NEURON. I want to modify the morphology of the dendrites by, for example, increasing the length of each dendritic compartment by 10%. Given that the length of each com...
by Sherif
Thu Mar 15, 2007 2:37 am
Forum: The GUI
Topic: Modifying properties of the shape plot
Replies: 1
Views: 3021

Modifying properties of the shape plot

Hello All, I want to modify the shape plot in order to visualize a variable (other than voltage, e.g., ina) using the color map. I tried implementing that by having a shape plot whose object ID was PlotShape[0], then I used the following code to modify its properties: PlotShape[0].varaible("ina") //...
by Sherif
Fri Feb 10, 2006 6:15 pm
Forum: Other questions
Topic: Problem in using SaveState class .save function
Replies: 4
Views: 4966

Hi Michael, I defined the "on" variable in the NetStim.mod file as a range variable; however, the problem is still there. Interestingly, after I uploaded the saved state file and monitored the current delivered by one of the synapses in a current graph I found that the synapse completed its spike cu...
by Sherif
Thu Feb 09, 2006 3:51 pm
Forum: Other questions
Topic: Problem in using SaveState class .save function
Replies: 4
Views: 4966

Problem in using SaveState class .save function

Hello, I have a detailed model of a single neuron that takes long time to reach steady-state conditions in response to a given level of synaptic input. Given that most of my measurements are taken during steady-state conditions I use the SaveState class .save function to save the steady-state condit...
by Sherif
Tue Jan 31, 2006 5:05 pm
Forum: Anatomically detailed models
Topic: Getting the name of a section from the Shape plot?
Replies: 1
Views: 4418

Getting the name of a section from the Shape plot?

Hi, I work with 3D morphological data in which the dendritic tree of a cell is described by around 1000 sections. I want to know if there is a way to get the name of any required section from the Shape plot? Actually, when I right click the mouse on the Shape plot I find an option called 'section'. ...
by Sherif
Tue Jan 31, 2006 1:38 pm
Forum: Other questions
Topic: Plotting 3D figures?
Replies: 3
Views: 5289

Plotting 3D figures?

Hi Friends,

Is there a way for plotting 3D figures in Neuron? or creating movies of 2D figures to show how the 2D relation is changing with time?

Thanks
by Sherif
Thu Jan 19, 2006 3:27 am
Forum: Anatomically detailed models
Topic: Building 3D prototypes for neurons from morphological data
Replies: 0
Views: 3370

Building 3D prototypes for neurons from morphological data

Hello, Technology has given us the option now to use 3D printers quite easily. I was wondering if anyone has developed a hoc code that can translate models with 3D detailed morphological data for single neurons (e.g. from .swc files) to generate files compatible with those 3D printers? This will ena...
by Sherif
Thu Jan 05, 2006 2:51 pm
Forum: Anatomically detailed models
Topic: Moving to a Parallel Hardware
Replies: 1
Views: 4232

Moving to a Parallel Hardware

My model became too complex and heavy to run on my desktop. I am considering now using the supercomputer resources at my university to run my simulations. some information I need to know: 1- As a MSWin user I have to switch now to UNIX to run my simulations on the supercomputer. Do I need to make an...
by Sherif
Mon Dec 05, 2005 1:36 pm
Forum: Anatomically detailed models
Topic: Computing the extracellular resistivity
Replies: 1
Views: 6729

Computing the extracellular resistivity

Hello, I am trying to use Neuron to apply extracellular stimulation pulses to a realistic 3D neuron model. For the assumption that the extracelular field is isotropic (i.e. resistivity is the same in all directions), the relation for the transfer resistance (resistance between the stimulating electr...
by Sherif
Tue Oct 25, 2005 1:59 pm
Forum: Other questions
Topic: NEURON models at SFN 2005 meeting
Replies: 3
Views: 5361

Re: NEURON models at SFN 2005 meeting

Hello everybody, I will be presenting my work in which I have used Neuron in the coming Neuroscience 2005 conference. Here is my poster's information: 750.4 CC32 S.M. ElBasiouny; D.J. Bennett; V.K. Mushahwar ROLE OF PERSISTENT INWARD CURRENTS (PICS) IN ENHANCEMENT AND INTEGRATION OF SYNAPTIC INPUTS ...
by Sherif
Thu Oct 13, 2005 5:14 pm
Forum: Anatomically detailed models
Topic: Extracellular Fields
Replies: 29
Views: 25004

Extracellular Fields

Hello, Does anybody use NEURON to simulate the effect of extracellular field potentials (e.g. homogenous and non-homogenous fields) on the behavior of neurons in anatomically detailed models? Is there any study that is dealing with a similar problem? I am starting a new project regarding this proble...