Refractory Period (definition)

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Refractory Period, Electrophysiological

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Definition: The period of time following the triggering of an ACTION POTENTIAL when the CELL MEMBRANE has changed to an unexcitable state and is gradually restored to the resting (excitable) state. During the absolute refractory period no other stimulus can trigger a response. This is followed by the relative refractory period during which the cell gradually becomes more excitable and the stronger impulse that is required to illicit a response gradually lessens to that required during the resting state.

DF: REFRACTORY PERIOD NEUROL
See Also Neural Inhibition

Other names Wedensky Inhibition; Vvedenskii Inhibition; Tetanic Fade; Refractory Period, Neurologic; Periods, Neurologic Refractory; Period, Neurologic Refractory; Transmission Fade, Neuromuscular; Refractory Periods, Neurological; Refractory Periods, Electrophysiological; Neurological Refractory Periods; Neurological Refractory Period; Fade, Tetanic; Fade, Neuromuscular Transmission; Fade, Neuromuscular; Electrophysiological Refractory Periods; Electrophysiological Refractory Period; Refractory Periods, Neurologic; Refractory Period, Neurological; Neuromuscular Transmission Fade; Neuromuscular Fade

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Sources: NLM Medical Subject Headings, NIH UMLS, Drugs@FDA, FDA AERS original data copyright United States Government. No endorsement implied. Last modified 6/6/2012
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