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Fitzhugh-Nagumo Model

Author(s): Richard FitzHugh1, Jin-ichi Nagumo2

1. Technische Hochschule 2. University of Tokyo

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The FitzHugh–Nagumo model describes a prototype of an excitable system (e.g., a neuron).


The FitzHugh-Nagumo model

is a two-dimensional simplification of the Hodgkin-Huxley model of spike generation in squid giant axons. Here,

  • V is the membrane potential,
  • W is a recovery variable,
  • I is the magnitude of stimulus current.

This system was suggested by FitzHugh (1961), who called it "Bonhoeffer-van der Pol model", and the equivalent circuit by Nagumo et al. (1962).


FitzHugh R. (1961) Impulses and physiological states in theoretical models of nerve membrane. Biophysical J. 1:445-466
Nagumo J., Arimoto S., and Yoshizawa S. (1962) An active pulse transmission line simulating nerve axon. Proc IRE. 50:2061–2070.

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