The initiating cycle of an action potential. In vertebrate neurons this typically occurs at an axon hillock. Not all initiated axon potentials propagate.
action potential propagation +
cardiac muscle cell action potential +
membrane depolarization during action potential +
membrane repolarization during action potential +
negative regulation of action potential +
neuronal action potential +
positive regulation of action potential +
regulation of action potential +
regulation of skeletal muscle contraction by action potential +