. "\"Any process that stops, prevents, or reduces the frequency, rate or extent of action potential creation, propagation or termination. An action potential is a spike of membrane depolarization and repolarization that travels along the membrane of a cell.\" [GOC:go_curators]" . . "negative regulation of action potential" . "down regulation of action potential" . "down-regulation of action potential" . "downregulation of action potential" . . "inhibition of action potential" .