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Updated: Jul 6, 2026

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关于人类痛苦戒断反射反应的试验性神经阻塞研究

Oumie Thorell1,2, David Mahns1, Jan Otto3

  • 1School of Medicine, Western Sydney University, Penrith, Australia.

PloS one
|August 16, 2024
PubMed
概括

这项研究表明,通常与触摸相关的Aβ纤维也可能有助于疼痛感知和感知性戒断反射 (NWR). 阻断这些纤维取消了NWR,挑战了关于疼痛信号通路的传统观点.

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Local Anesthetics: Differential Sensitivity of Nerve Fibers01:24

Local Anesthetics: Differential Sensitivity of Nerve Fibers

Local anesthetics (LAs) block the sodium channels of nerve trunks, sensory nerve endings, and neuromuscular junctions. Although LAs can block all kinds of nerves, the sensitivity of nerve fibers differs according to nerve types and structures. LAs are known to block myelinated fibers faster than unmyelinated ones. Also, they block pain or sensory neurons at low concentrations without affecting the motor neurons involved in muscle contractions. This helps relieve labor pain without affecting the...