Medical Dictionary

automaticity

play
noun au·to·ma·tic·i·ty \ˌȯ-tə-mə-ˈti-sə-tē, -ma-\

Medical Definition of automaticity

plural

automaticities

  1. :  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, 19 Jan. 1995 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, 2011


Seen and Heard

What made you want to look up automaticity? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

holding stubbornly to a belief or view

Get Word of the Day daily email!