Hansen M V, Ertekin C, Larsson L E
Department of Clinical Neurophysiology and Urology, University Hospital, Linköping, Sweden.
Electroencephalogr Clin Neurophysiol. 1990 Jan-Feb;77(1):52-8. doi: 10.1016/0168-5597(90)90016-7.
Cerebral evoked potentials (EPs) were recorded in 25 neurologically normal subjects aged 22-73 years (mean 44.0) after stimulation of the posterior urethra (PU) and the pudendal nerve. After maximal PU stimulation 2 different configurations of the potential were found. In 12 cases a simple bi-triphasic wave form was recorded while in 12 cases there was a bifid form of the first negative wave. In 1 case identical EPs were recorded after PU and pudendal nerve stimulation. It was concluded that (1) PU stimulation excites fibres in the pudendal nerve at higher stimulation strength, resulting in a bifid wave form of the cerebral evoked potential in some individuals, (2) the most prominent negative peak, N1, with a latency of 102.1 +/- 13.2 msec, is the most reproducible part of the PU-evoked potential, (3) the N1 is probably transmitted through A delta fibres localized in the pelvic nerves, (4) there are differences between individuals concerning pudendal and pelvic nerve involvement in afferent innervation of the urethra.
对25名年龄在22至73岁（平均44.0岁）神经功能正常的受试者，在刺激后尿道（PU）和阴部神经后记录脑诱发电位（EPs）。在最大程度刺激PU后，发现了2种不同的电位形态。12例记录到简单的双三相波形，12例首次负波呈双峰形态。1例在刺激PU和阴部神经后记录到相同的EPs。得出以下结论：（1）在较高刺激强度下，PU刺激会激发阴部神经中的纤维，导致部分个体的脑诱发电位呈双峰波形；（2）最突出的负峰N1，潜伏期为102.1±13.2毫秒，是PU诱发电位中最可重复的部分；（3）N1可能通过位于盆神经中的Aδ纤维传导；（4）在尿道传入神经支配中，阴部神经和盆神经的参与情况存在个体差异。
