action potential

(redirected from Action potential threshold)
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action potential

n.
A momentary change in electrical potential on the surface of a cell, especially of a nerve or muscle cell, that occurs when it is stimulated, resulting in the transmission of an electrical impulse.

action potential

n
(Physiology) a localized change in electrical potential, from about –70 mV to +30 mV and back again, that occurs across a nerve fibre during transmission of a nerve impulse

ac′tion poten`tial


n.
the change in electrical potential that occurs between the inside and outside of a nerve or muscle fiber when it is stimulated, serving to transmit nerve signals. Compare nerve impulse.

action potential

- A brief electrical signal transmitted along a nerve or muscle fiber following stimulation.
See also related terms for nerve.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.action potential - the local voltage change across the cell wall as a nerve impulse is transmittedaction potential - the local voltage change across the cell wall as a nerve impulse is transmitted
nerve impulse, nervous impulse, neural impulse, impulse - the electrical discharge that travels along a nerve fiber; "they demonstrated the transmission of impulses from the cortex to the hypothalamus"
References in periodicals archive ?
7) They noted a slightly higher compound action potential threshold and latency in the CSF-drained group.
During the first 24 h, following acoustic trauma, there was a partial recovery of compound action potential thresholds of about 20 dB to reach a final threshold elevation of about 50-70 dB; there was no further improvement over the remaining experimental week.
Yet one study showed that when rats were pretreated with allopurinol or superoxide dismutase/polyethylene glycol prior to the induction of ischemia, cochlear action potential thresholds were maintained.

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