Action potential propagation and synchronisation in myelinated axons
Fig 4
Contribution of ion currents from nearby nodes to action potential profile.
A: Sodium currents contributing to action potential, and B: same for potassium. Depolarising effect is color-coded by node index, larger indices are lumped. Total effect is indicated by black line. C: Action potential composed of both currents. D: Contribution of sodium currents to reaching threshold value. Standard parameters are used here (Table 1 in Methods).