These are the source codes used in

Cressman JR, Ullah G, Ziburkus J, Schiff SJ, Barreto E (2009) The
influence of sodium and potassium dynamics on excitability, seizures,
and the stability of persistent states: I. Single neuron dynamics. J
Comput Neurosci 26:159-70

The code for the full model is written in C and uses routines from
Numerical Recipes in C.

The code for the reduced model runs on XPP.