Fig. 4
From: Conditions for Multi-functionality in a Rhythm Generating Network Inspired by Turtle Scratching
Saddle-node bifurcation for KE. The red curve is the \(h_{\mathit {KE}}\) nullcline, while the black curves are \(V_{\mathit {KE}}\) nullclines for differing combinations of synaptic input. The change between these two combinations induces a saddle-node bifurcation. We illustrate this bifurcation in the \((V_{\mathit {KE}},h_{\mathit {KE}})\) phase plane since it is critical for delaying KE activation in the rostral rhythm