Figure 3From: Teaching and learning the Hodgkin-Huxley model based on software developed in NEURON’s programming language hoc Repetitive spiking. Test of repetitive spiking when a long-lasting current step of constant amplitude is injected into the axon. Case A, graph A, small amplitude of the stimulus; case B, graph B, just enough amplitude to exceed the spike threshold; cases C and D, graphs C and D, amplitude is greater than the threshold.Back to article page