Continuous flow · dim 2

FitzHugh-Nagumo

2D simplification of Hodgkin-Huxley neuron model. Exhibits excitable dynamics, limit cycles, and (with periodic forcing) period-doubling chaos.

Periodically forced FitzHugh-Nagumo excitable neuron model.

Equations

dv/dt = v − v³/3 − w + I
dw/dt = ε (v + a − b w)

Parameters	a, b, ε, I
Chaotic for	forced regime with periodic I(t)
History	FitzHugh (1961), Nagumo et al. (1962).