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Simulated action potentials generated using the Hodgkin-Huxley model. Different amounts of current were applied to stimulate trains of action potentials with varying frequencies. The current stimulus ranged from low to high (5 pA, 10 pA, and 20 pA from top to bottom), and the parameters used were based on action potential of the squid giant axon and obtained from the Handbook of Physiology - the Nervous System, Chapter 4, authored by Bertil Hille (1977).
