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Fig. 6 | The Journal of Mathematical Neuroscience (JMN)

Fig. 6

From: Path Integral Methods for Stochastic Differential Equations

Fig. 6

Vertices and propagators for Feynman diagrams in the Fitzhugh–Nagumo model. (a) Propagators \(G_{\nu}^{v}\) (solid–solid), \(G\nu ^{w}\) (solid–dashed), \(G_{\omega}^{v}\) (dashed–solid), \(G_{\omega}^{w}\) (dashed–dashed), (b) vertex \(\int \tilde{v}V\nu^{2}\,dt\), (c) vertex \(\int \frac{D}{2} \tilde{v}^{2}\,dt\), (d) vertex \(\int\frac{1}{3} \tilde{v}\nu^{2}\,dt\)

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