boundary conditions

Using the graphical user interface to build and exercise models. Includes customizing the GUI by writing a little bit of hoc.
Post Reply
Asha Gopinathan
Posts: 5
Joined: Tue Sep 28, 2010 12:11 am

boundary conditions

Post by Asha Gopinathan »

What are the boundary conditions being used in the GUI ? Is it sealed end ? Is there a way of changing these ?

When current is injected at points of the cable that are not the end - what boundary conditions are you using at both ends ?
ted
Site Admin
Posts: 5810
Joined: Wed May 18, 2005 4:50 pm
Location: Yale University School of Medicine
Contact:

Re: boundary conditions

Post by ted »

Asha Gopinathan wrote:What are the boundary conditions
Sealed end, regardless of whether you use the GUI or write code.
Is there a way of changing these ?
Sure. Attach a load or signal source to one end or the other. Example of the former: one or more sections. Example of the latter: an IClamp, SEClamp, AlphaSynapse, or some other "point process" that can draw or deliver current.
When current is injected at points of the cable that are not the end - what boundary conditions are you using at both ends ?
I don't understand the question. It starts by making an assumption about something that does not involve the ends of a cable, then jumps to a query about the ends of the cable. ??
Asha Gopinathan
Posts: 5
Joined: Tue Sep 28, 2010 12:11 am

Re: boundary conditions

Post by Asha Gopinathan »

I mean that one can have current injection at the end of the cable or at some other point in the cable. If it is at the end,

Then that end has a current injection boundary condition and the other could have sealed, killed end.

Now if current is injected in the middle of the cable, both ends need boundary conditions. What is NEURON using then?
ted
Site Admin
Posts: 5810
Joined: Wed May 18, 2005 4:50 pm
Location: Yale University School of Medicine
Contact:

Re: boundary conditions

Post by ted »

Default is always sealed end, but you can always specify a non-default condition as described above.
Post Reply