nerve impulsenerve impulse
an electrochemical change that sweeps over a nerve fiber when it is stimulated
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.
(plural nerve impulses)
- (physiology) The signal transmitted along a nerve fibre, either in response to a stimulus (such as touch, pain or heat), or as an instruction (such as causing a muscle to contract).