This is a javascript implementation by Nicolas Cedilnik of the model presented in
the paper:
Mitchell, Colleen C. et Schaeffer, David G.,
« A two-current model for the dynamics of cardiac membrane », Bulletin of Mathematical Biology,
vol. 65, no 5, p. 767‑793, sept. 2003, doi: 10.1016/S0092-8240(03)00041-7.