nerve impulse


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nerve impulse

n.
A wave of physical and chemical excitation along a nerve fiber in response to a stimulus, accompanied by a transient change in electric potential in the membrane of the fiber.

nerve impulse

n
(Physiology) the electrical wave transmitted along a nerve fibre, usually following stimulation of the nerve-cell body. See also action potential

nerve′ im`pulse



n.
a progressive wave of electric and chemical activity along a nerve fiber, stimulating or inhibiting action.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nerve impulse - the electrical discharge that travels along a nerve fiber; "they demonstrated the transmission of impulses from the cortex to the hypothalamus"
electrical discharge - a discharge of electricity
action potential - the local voltage change across the cell wall as a nerve impulse is transmitted
References in periodicals archive ?
MENTAL BIOLOGY: THE NEW SCIENCE OF HOW THE BRAIN AND MIND RELATE focuses on how the mind emerges from nerve impulse patterns in the brain- and why consciousness therefore can be seen as a neural-activity-based entity in its own right.
However, when spinal vertebra become misaligned, interference to the nerve impulse occurs, which reduces the overall function of the nervous system.
Each pathway is described according to the direction of the nerve impulse rather than by the embryologic outgrowth of the nerve.
In nerve cells, ion channels work with extreme precision: Sodium channels open for a fraction of a second to allow just enough sodium in to trigger a nerve impulse.
When a nerve impulse reaches the end of the motor neuron, ACh is released from the presynaptic nerve ending into the synaptic cleft.
MENTAL BIOLOGY: THE NEW SCIENCE OF HOW THE BRAIN AND MIND RELATE focuses on how the mind emerges from nerve impulse patterns in the brain--and why consciousness therefore can be seen as a neural-activity-based entity in its own right.
In people with normal nerve-muscle interaction, every nerve impulse elicits a muscle response.
Waxman was inspired to devote his life to studying nerve impulse conduction in normal, demyelinated, and regenerating nerve fibers.
We found that the human Schwann cells formed relatively extensive myelin and that previously obstructed nerve impulse conduction improved.
Saxena added, "The results are the first to demonstrate a biological effect of electromagnetic fields, in vivo, on the restoration of subcellular structures required for nerve impulse conduction and metabolism in nerves, and consequently a grip strength recovery from motor neuropathy, under controlled experimental conditions.
This alters the electrical potential across the membrane, which ultimately leads to transmission of the nerve impulse.
According to one hypothesis, they become trapped at synapses, inhibiting nerve impulse signals.