www.neuron.yale.edu

Hi.

I would need some help to translate an equation, I found on a paper, into the correct NEURON equivalent.

This equation controls the forward transition between two states in a markov chain.
ao is an integer calculate by the authors, eo is the elementary charge, zada is an integer calculate by the authors, E is the voltage, k is the Boltzmann constant, T is the absolute temperature.

I can "simply" replace the elementary charge and the Boltzmann constast with their actual values or is there a better way?

Are you asking about a statement in a hoc or Python file, or in a mod file?

My bad, I forgot to write that the equation will be used in a MOD file.

Regardless of the programming language, it is generally not a good idea to embed magic numbers (numerical constants) in code. Instead, it is best to use a variable whose value will not be changed during a simulation. In NMODL you could define a symbolic constant by declaring its name and assigning a numeric value to it, with appropriate units, in a CONSTANT block. However, the recommended practice is to do this in the UNITS block. For examples, see
https://nrn.readthedocs.io/en/8.2.6/pyt ... nmodl.html

Thank you.

I have added the two costant as UNITS and the MOD files pass nrnivmodl without issues.

Hi.

For nrnivmodl was ok but for modlunit is not and the voltage clamp showed that too.
My issue is where i have to apply the conversion factor. If I simply multiply everything for 1000 it goes even worse.

To give specific advice, I'll have to reproduce the error for myself. Can you email the mod file in question to ted dot carnevale at yale dot edu?