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Fig. 1 | The Journal of Mathematical Neuroscience (JMN)

Fig. 1

From: Neural Excitability and Singular Bifurcations

Fig. 1

Bifurcation diagrams of the canonical model (1) together with ‘frequency–current’ (f–I) plots: (Type I) \(c=0.005\); SNIC bifurcation near \(I=I_{\mathrm{bif}}=0\) where the frequency approaches zero; (Type II) \(c=4\); supercritical singular Andronov–Hopf bifurcation near \(I=I_{\mathrm{bif}}=0\); the subsequent canard explosion is clearly visible; note the small frequency band for the relaxation oscillation branch

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