Extended Data Fig. 5: Phase diagram of excitability of the FitzHugh-Nagumo-inspired model.
From: Observation of topological action potentials in engineered tissues
The phase diagram is calculated both for the interface (background) and homogenous (shaded areas) configurations. The parameter space is divided into non-excitable, excitable, and spontaneously active phases. Like the realistic model (see Fig. 2c), the interface configuration shows little sensitivity to the values of gK and gNa. Other parameters: \(\tau = 10^4;A = 5;B = 3;g_{stim} = 10^{ - 2}\). Related to Fig. 2.
