兴奋区域此时与周邻部位之间有电位差，这就会引起周邻部分产生兴奋，兴奋沿神经纤维推进，此过程即为神经冲动传导。
当髓鞘被破坏，神经纤维传导阈值降低，神经冲动传导变慢或被分散。
When the myelin is destroyed, the nerves misfire, and nerve impulses can be slowed or disrupted.
同样重要的发现是，最终得到的神经细胞可以传导电冲动并能形成神经突触(细胞交流的平台)。
Just as importantly, the resulting nerve cells were able to conduct electrical impulses and could form the specialised junctions called synapses, by means of which nerve cells talk to each other.
镇痛药：可减轻疼痛而又不阻滞神经冲动的传导、不显著改变感觉器官功能的药物。
Analgesic: Drug that relieves pain without blocking nerve impulse conduction or markedly altering sensory function.
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