FitzHugh-Nagumo Spiral Waves

Excitable medium: action potentials self-organize into rotating spiral waves — the mechanism behind cardiac arrhythmia reentry.

Excitability (a): 0.12 Recovery (b): 0.50 Coupling (D): 1.0 Init Spiral Plane Wave Pause

dv/dt = v(a−v)(v−1) − w + D∇²v  |  dw/dt = ε(v − bw)