Powers R E, Swick H M, McQuillen M P
J Neurol Neurosurg Psychiatry. 1978 Jul;41(7):642-8. doi: 10.1136/jnnp.41.7.642.
The excitabilities of separate fibre populations were examined in the ulnar nerve in 74 healthy subjects, and in the posterior tibial, peroneal, and sural nerves in 23 of these subjects. Square wave electric stimuli of varying duration were applied to the nerve in different locations, while recording the evoked muscle or nerve action potential. "Threshold" strengthduration curves were derived for motor, sensory, and mixed nerve fibre populations. These curves did not vary significantly one from another, in upper versus extremity, or over time. No correlations between excitability and other measures of peripheral nerve function were observed. Excitability appears to reflect some element of nerve structure or function other than myelin.
在74名健康受试者的尺神经中，以及在其中23名受试者的胫后神经、腓总神经和腓肠神经中，对不同纤维群的兴奋性进行了检测。将不同持续时间的方波电刺激施加于神经的不同部位，同时记录诱发的肌肉或神经动作电位。得出了运动、感觉和混合神经纤维群的“阈值”强度-时间曲线。这些曲线在上肢与下肢之间，或随时间变化，彼此之间无显著差异。未观察到兴奋性与外周神经功能的其他指标之间存在相关性。兴奋性似乎反映了髓鞘以外的神经结构或功能的某些要素。
