afferent impulse

biology

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July 23, 2026

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An afferent impulse, also known as a nerve impulse, is a physicochemical change in a nerve fiber's membrane that transmits information from a receptor to an effector. This process is fundamental to how nerves function as communication pathways, carrying signals between the central nervous system and the rest of the body.12

Receptors, which convert environmental energy into electrical impulses, are connected to the central nervous system by afferent nerve fibers. These impulses allow the body to sense its surroundings, control movement, and regulate internal functions. The intensity and location of a stimulus are signaled by the frequency of these nerve impulses and the number of afferent nerves involved.32

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nervous system
Nervous systems
This incoming excitation, or afferent impulse, then passes along an extension, or axon, of the receptor to an adjustor, called an interneuron. (All neurons are capable of conducting an impulse, which is a brief change in the electrical charge on the cell membrane. Such an impulse can be transmitted,…
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This incoming excitation, or afferent impulse, then passes along an extension, or axon, of the receptor to an adjustor, called an interneuron. (All neurons are capable of conducting an impulse, which is a brief change in the electrical charge on the cell membrane. Such an impulse can be transmitted,…
Read More