automaticity

noun

au·​to·​ma·​tic·​i·​ty ˌȯ-tə-mə-ˈti-sə-tē, -ma- How to pronounce automaticity (audio)
plural automaticities
: the capacity of a cell to generate an action potential spontaneously without an external stimulus
Atrial tachycardias due to abnormal automaticity or triggered activity are particularly difficult to abolish with antiarrhythmic drugs. Leonard I. Ganz and Peter L. Friedman, The New England Journal of Medicine
All adult cardiac myocytes can respond to electrical stimuli and conduct action potentials, but the working cells of the atria and ventricles generally lack automaticity Arnold M. Katz, Physiology of the Heart, 5th edition

Dictionary Entries Near automaticity

Cite this Entry

“Automaticity.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/automaticity. Accessed 9 Dec. 2022.

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