The Morris-Lecar model is a two-dimensional system of differential equations describing neuronal excitability. It captures the interplay between a fast voltage variable and a slow recovery variable , which is enough to reproduce dynamics seen in real neurons — resting states, single spikes, and sustained oscillations.
Use the slider to change the applied current . At low values the system rests at a stable fixed point; increase the current past a threshold and a limit cycle emerges.