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ted wrote: ↑Thu Jun 14, 2012 6:05 pm This is usually caused by either a programmer's error in a mod file, or model equations (usually in a mod file) that are inherently unstable.

I have the same problem, I have checked times and times mod file equations, but I couldn't solve this problem. Is there another reason for that?

Please see https://github.com/nrnhines/dcmdt in particular the comment in hhdcdt.mod I used this for an unmyelinated axon and the results were acceptable but now I try to use this for a myelinated axon and I think my results are not correct, actually, as I connect an internode with passive mechanis...

hines wrote: ↑Mon Jun 01, 2020 11:50 am Please see https://github.com/nrnhines/dcmdt in particular the comment in hhdcdt.mod

Thanks for your helpful reply

Hi I want to modify HH model so that membrane capacitance changes with a specific function that depends on the temperature and the total current through the membrane changes as: I= (c(T)*dv/dt) + (dc/dt * v) my question is that if I define the capacitance in the mod file (BREAKPOINT) such this: c(T)...