Search found 9 matches

by srikanth_rswamy
Thu Feb 26, 2009 11:45 am
Forum: Getting started
Topic: Tsodyks-Markram synapse model
Replies: 9
Views: 7592

Re: Tsodyks-Markram synapse model

Hi, I tried figuring out why exactly gmax is assigned to 0.001 uS (1 nS) in the implementation of the Tsodyks-Markram model (code pasted above this post), but to no avail. My question is, why use a gmax value of 0.001 uS, and why not any other value? I tried running simulations with various gmax val...
by srikanth_rswamy
Thu Feb 12, 2009 6:11 pm
Forum: Getting started
Topic: Tsodyks-Markram synapse model
Replies: 9
Views: 7592

Re: Tsodyks-Markram synapse model

The model I was referring to is under http://senselab.med.yale.edu/modeldb/Sh ... model=3815, tmgsyn.mod
by srikanth_rswamy
Thu Feb 12, 2009 3:59 pm
Forum: Getting started
Topic: Tsodyks-Markram synapse model
Replies: 9
Views: 7592

Re: Tsodyks-Markram synapse model

Thanks again Ted... below is the whole code... I changed g=gmax*(B-A) to be part of the BREAKPOINT point from what you pointed out. I looked at the implementation of this synapse model in ModelDB, which does contain a gmax value, and also does not use variables A and B, but uses a 'term' state_disco...
by srikanth_rswamy
Wed Feb 11, 2009 11:03 am
Forum: Getting started
Topic: Tsodyks-Markram synapse model
Replies: 9
Views: 7592

Re: Tsodyks-Markram synapse model

Thanks Ted... I have another question... why is it necessary to have a gmax value in the parameter block in a synapse model? Is it a scalar value that scales the time varying conductance g, given by g = gmax*(B-A), where A and B are variables that vary with the NETCON weight? I have a chunk of code ...
by srikanth_rswamy
Wed Feb 04, 2009 12:24 pm
Forum: Getting started
Topic: Tsodyks-Markram synapse model
Replies: 9
Views: 7592

Tsodyks-Markram synapse model

The implementation of the Tsodyks-Markram synapse model in ModelDB does not have g set to any initial value... The reference Tsodyks et al., based on which the model is created does not mention any g value... Could g be assumed to be the gmax value for AMPA synapses, which lies in the range 1 - 2.7 ...
by srikanth_rswamy
Tue Aug 29, 2006 5:42 am
Forum: Adding new mechanisms and functions to NEURON
Topic: STDP using FOR_NETCONS
Replies: 1
Views: 4347

STDP using FOR_NETCONS

Hi I'm looking at incorporating STDP in a model of the neocortical column, and came across Michael Hines's code for the same. I'm rather curious to know what the FOR_NETCONS keyword does precisely. However, I could not find any documentation explaining the same in greater detail. Another thing that ...
by srikanth_rswamy
Wed May 03, 2006 3:42 am
Forum: The GUI
Topic: dropdown menu
Replies: 4
Views: 7756

Albeit not exactly a dropdown menu, the file chooser interface .chooser seems to work in a way. At least it offers a way to choose files.
by srikanth_rswamy
Tue May 02, 2006 8:54 am
Forum: The GUI
Topic: dropdown menu
Replies: 4
Views: 7756

thanks for the note. however, is there a way of choosing a file from a display window, say for instance something similar to the load hoc/load session functions under the File tab? this might perhaps be a workaround for what I'm looking to incorporate.

Thanks
Srikanth
by srikanth_rswamy
Tue May 02, 2006 4:14 am
Forum: The GUI
Topic: dropdown menu
Replies: 4
Views: 7756

dropdown menu

'm trying to build a GUI for synaptic diagnostics. Basically, what I'm trying to do is to have a GUI with the following parameters: 1. NetworkPath (displays the network path for my simulation) 2. Total no. of neurons (displays the total no. of neurons in my network) 3. MorphPath (displays the morpho...