Transcutaneous nerve stimulation describes a technique whereby current applied to the skin stimulates large diameter afferent axons (Afi fiber) to inhibit the transmission of a painful stimulus from the C fiber to a second -order neuron.

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Transcutaneous Electrical Nerve Stimulation (TENS) works on the principle of stimulating large diameter afferent fibers (Aβ fibers), which can inhibit the transmission of pain signals carried by smaller diameter fibers (C fibers) to second-order neurons in the spinal cord, according to the gate control theory of pain.

Transcutaneous Nerve Stimulation Describes a Technique Whereby Current Applied to the Skin