Their activation allows the cell to repolarize after action potential firing and reduces excitability, whereas channel inhibition increases excitability.
Marie-France Martin-Eauclaire, Pierre E. Bougis 2012, 'Potassium Channels Blockers from the Venom of Androctonus mauretanicus mauretanicus',Journal of Toxicologyhttp://dx.doi.org/10.1155/2012/103608. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)