Fig. 5
From: Statistical field theory of the transmission of nerve impulses
Characteristic limit ratios as a function of membrane potential in the HH model. The figure on the left shows the limit functions for activating the K+ conductance (n∞) and the activation and inactivation functions for the Na+ conductance (m∞, h∞). The relative time constants (as a function of potential) are shown on the right. (courtesy of P. Dayan et Al., [8])