FitzHugh-Nagumo model. Ring racing

a b ε dt dx

it delay fps
In 1D horizontal line picture u(x) values are displayed by the red color and 3v(x) values are displayed by the green color. 1D pictures for different time moments are rendered in the vertical direction to show transient processes (we will use this script to test alternance in ionic models later). Threshold voltage Uth = 0.5 and full ring length is L = 1024 dx.
Heart rhythms     updated 3 June 2012