Induction
The firing of the pacemaker cells is induced electrically by reaching the threshold potential of the cell membrane. The threshold potential is the potential an excitable cell membrane, such as a myocyte, must reach in order to induce an action potential. This depolarization is caused by very small net inward currents of calcium ions across the cell membrane, which gives rise to the action potential.
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Famous quotes containing the word induction:
“They relieve and recommend each other, and the sanity of society is a balance of a thousand insanities. She punishes abstractionists, and will only forgive an induction which is rare and casual.”
—Ralph Waldo Emerson (1803–1882)
“One might get the impression that I recommend a new methodology which replaces induction by counterinduction and uses a multiplicity of theories, metaphysical views, fairy tales, instead of the customary pair theory/observation. This impression would certainly be mistaken. My intention is not to replace one set of general rules by another such set: my intention is rather to convince the reader that all methodologies, even the most obvious ones, have their limits.”
—Paul Feyerabend (1924–1994)