nerve impulse

noun
|Updated on: 3 Aug 2018

Definition of nerve impulse

: the progressive physicochemical change in the membrane of a nerve fiber that follows stimulation and serves to transmit a record of sensation from a receptor or an instruction to act to an effector called also nervous impulse

Recent Examples of nerve impulse from the Web

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First Known Use of nerve impulse

1870

in the meaning defined above

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NERVE IMPULSE Defined for Kids

nerve impulse

noun

Definition of nerve impulse for Students

: an electrical signal carried by nerve cells which relays information from the body's sense organs to the brain and spinal cord or instructions from the brain and spinal cord to a body part (as a muscle or gland)

Medical Dictionary

nerve impulse

noun
variants: also nervous impulse

medical Definition of nerve impulse

: an electrical signal that travels along a nerve fiber in response to a stimulus and serves to transmit a record of sensation from a receptor or an instruction to act to an effector : the propagation of an action potential along the length of a neuron
Note: A nerve impulse occurs when a stimulus exceeds a certain threshold resulting in the movement of positively charged sodium ions across the cell membrane of a neuron so that the electrical charges inside and outside the membrane are temporarily reversed.

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