Search found 38 matches

by Corinne
Wed Apr 30, 2014 3:08 pm
Forum: Anatomically detailed models
Topic: placing a dot on a shape plot
Replies: 1
Views: 5958

placing a dot on a shape plot

Hello,

I would like to place a dot on a shape plot to denote the location of a synapse. Is there a way to do this?

Thanks in advance!!
Corinne
by Corinne
Tue Jul 31, 2012 10:41 pm
Forum: Anatomically detailed models
Topic: Jaffe & Carnevale 1999 code
Replies: 25
Views: 9995

Re: Jaffe & Carnevale 1999 code

I have another question with regard to this post. I am making shape plots of the max PSP deflection at each point of a neuron caused by an inhibitory synapse. To calculate the deflection I use a mechanism: minv.mod NEURON { SUFFIX minv RANGE v0, vipsp } ASSIGNED { v (millivolt) v0 (millivolt) vipsp ...
by Corinne
Fri Feb 17, 2012 1:07 am
Forum: Anatomically detailed models
Topic: Finding upstream and downstream sections and segments
Replies: 3
Views: 3211

Re: Finding upstream and downstream sections and segments

I knew there would be a fabulous way to do it!

Is there an equally fabulous way to make a list of all the distal most sections of an arbor? I couldn't quite figure it out using the recommended statements.

Thanks!
by Corinne
Sun Feb 12, 2012 10:19 pm
Forum: Anatomically detailed models
Topic: Finding upstream and downstream sections and segments
Replies: 3
Views: 3211

Finding upstream and downstream sections and segments

Hello, I was wondering if there was an elegant way to find all of the upstream and downstream sections and segments from a node. For example, say I wanted to find the average voltage of all sections upstream from an current injection point. To do this I would need to know the voltage at all the node...
by Corinne
Fri Jan 27, 2012 10:52 pm
Forum: Anatomically detailed models
Topic: Jaffe & Carnevale 1999 code
Replies: 25
Views: 9995

Re: Jaffe & Carnevale 1999 code

Thanks Ted, I worked your commands into the onepoint procedure. I wanted to do a sanity check to make sure everything was working. Checking the soma.vipsp_minv(0) was easy. I just used print statements and plotted the voltage trace at the soma while the program was iterating though the onepoint() pr...
by Corinne
Thu Jan 26, 2012 9:17 pm
Forum: Anatomically detailed models
Topic: Jaffe & Carnevale 1999 code
Replies: 25
Views: 9995

Re: Jaffe & Carnevale 1999 code

Hi Ted, Thanks, I thought of using the max mechanism (I am using a min version) you posted before; however, I was uncertain where to place it in the file when marching the synapse around. Because the mechanism calculates the psp at each point (segment) in the neuron as the result of a synapse, I thi...
by Corinne
Thu Jan 26, 2012 8:34 pm
Forum: Adding new mechanisms and functions to NEURON
Topic: Synaptic conductance driven by a waveform
Replies: 12
Views: 8794

Re: Synaptic conductance driven by a waveform

Hola, I am trying to figure out how to code the GClamp in .hoc code. Via the gui, after inserting a GClamp from the Point Process Menu (which I assume I would do the following in .hoc: objref syn soma syn = new GClamp(0) //make soma(0) the "reference point" syn.e = -80 //mV only variable t...
by Corinne
Thu Jan 26, 2012 7:03 pm
Forum: Anatomically detailed models
Topic: Jaffe & Carnevale 1999 code
Replies: 25
Views: 9995

Re: Jaffe & Carnevale 1999 code

Hi Ted, I am trying to alter the code you posted on this thread on August 31, 2011. For a synapse placed at every segment of the neuron, your code plots the distance of the synapse from the soma vs the resulting psp at the soma normalized by the maximal psp at the soma. Instead of normalizing by the...
by Corinne
Wed Jan 04, 2012 6:15 pm
Forum: Adding new mechanisms and functions to NEURON
Topic: Synaptic conductance driven by a waveform
Replies: 12
Views: 8794

Re: Synaptic conductance driven by a waveform

Thank you Ted and Michael! I figured out the scale of the conductance I was injecting was way to large; therefore, my small oscillation around zero (which although I agree doesn't make sense to have a negative conductance, but nonetheless...) was causing my simulation to blow up in my case. Go a hea...
by Corinne
Mon Jan 02, 2012 3:32 am
Forum: Adding new mechanisms and functions to NEURON
Topic: Synaptic conductance driven by a waveform
Replies: 12
Views: 8794

Re: Synaptic conductance driven by a waveform

Hi Ted, I have been trying to get this thing to work but I don't understand it. Below are some question to your comments. 1. I changed the ELECTRODE_CURRENT i to a NONSPECIFIC_CURRENT i. Although it took care of the instability near the beginning of the voltage trace it still blows up toward the end...
by Corinne
Fri Dec 30, 2011 5:54 pm
Forum: Adding new mechanisms and functions to NEURON
Topic: Synaptic conductance driven by a waveform
Replies: 12
Views: 8794

Re: Synaptic conductance driven by a waveform

I have sent it via email. Thanks so much for your help on this!
by Corinne
Thu Dec 29, 2011 5:38 pm
Forum: Adding new mechanisms and functions to NEURON
Topic: Synaptic conductance driven by a waveform
Replies: 12
Views: 8794

Synaptic conductance driven by a waveform

I am trying to model a synapse by changing the membrane conductance (as opposed to injecting a current) according to a wave form I specify. In order to do this I am using a dynamic clamp code provided at http://www.neuron.yale.edu/phpbb/viewtopic.php?f=15&t=1670&p=5920&hilit=gartland#p59...
by Corinne
Mon Oct 17, 2011 6:09 pm
Forum: Getting started
Topic: Import3D creates 2 soma
Replies: 4
Views: 2783

Re: Import3D creates 2 soma

Thank you so much. I am sending it your way now.

Corinne
by Corinne
Mon Oct 17, 2011 2:04 pm
Forum: Getting started
Topic: Import3D creates 2 soma
Replies: 4
Views: 2783

Re: Import3D creates 2 soma

Also when I choose the option that connects the non connected section to the soma; then I export the cell to the cellbuilder; then I export the cell to a .hoc file via the cell builder. When I try to open the .hoc file later (after I close NEURON and open it again) I get the following error: oc>/App...