Bistable Dynamics Underlying Excitability of Ion Homeostasis in Neuron Models
Figure 6
Overview of the parameter regimes for bistability, polarized and depolarized stability for different models (1–8).
The change from the monostable depolarized regime to bistability (red to orange) defines the minimal physiological pump rate, i.e., the pump rate required for the existence of a polarized fixed point. The line separating the bistable from the monostable polarized regime (orange to green) defines the minimal recovery pump rate, i.e., the pump rate required to return from the depolarized fixed point to the polarized equilibrium. The model from Sec. Model is marked by a star.