action potential

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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 ?
It will merge the electrical stimulation effects on sensory fibers and transduction of mechanical deformations of the skin into action potentials.
The propagation of action potentials is widely studied [11-13,62].
the "pacemaker" of the heart) differ significantly from each other, for example in their action potentials.
Signals recorded with CN electrodes, even if visibly indistinguishable from single-fiber action potentials, may actually be composed of synchronized and near-simultaneous action potentials from more than one muscle fiber ; thus, CN electrodes cannot be used to measure FD as it is defined in SFEMG because of the larger uptake radius.
Single-fiber-like action potentials having amplitudes higher than 200 [micro]V and rise times shorter than 0.
action potentials behavior, allowing the study of firing threshold and refractory period, which are important electrical characteristics in the neuronal dynamics [3],[4],[5].
In this study, it is aimed to find whether PCBm sensory nerve action potentials are affected in CTS patients.
The output takes the form of action potentials in retinal ganglion cells whose axons form the optic nerve.
Essential to this process is the ability of neurons to generate and propagate action potentials.
Engineers, sport scientists, and other researchers from Europe, Asia, Canada, and Colombia cover the basics of EMG and motor unit action potentials (MUAPs), including the neural control of muscle contraction, the anatomical, physiological, and technical aspects of recording single fiber action potentials, monitoring the electrical activity of skeletal muscles, and the fundamentals of biological signal analysis and processing, followed by discussion of EMG signal modeling and processing, including the biomechanic modeling of elbow joint dynamics, arm swing during gait for upper limb muscles, using ultrasonography to measure the musculotendon parameters of elbow muscles, and neuromuscular patterns in golf.
Experimental studies also indicate that electrically stimulated action potentials of adult mouse sensory neurons in cell culture are blocked to a large extent when the neuron was positioned in a static magnetic field of 11 milliTesla [9].
Because most neurons in humans are myelinated (ie, covered with a myelin sheath from glial cells), action potentials propagate rapidly.

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