Fowler C J, Kirby R S, Harrison M J
J Neurol Neurosurg Psychiatry. 1985 Oct;48(10):1004-9. doi: 10.1136/jnnp.48.10.1004.
A type of electromyographic activity, formerly referred to as "pseudomyotonia", can be recorded from the striated muscle of the urethral sphincter using a concentric needle electrode. There are two components to this activity, complex repetitive discharges and decelerating bursts. The latter usually dominate recordings and sound very like myotonic discharges. Analysis of these discharges indicates that they are a form of "bizarre repetitive discharge", and as such, result from ephaptic spread of excitation between muscle fibres rather than from excitation arising in the terminal branches of the motor axon. Profuse activity of this type has been found in 15 women with symptoms of urethral dysfunction, including 11 with urinary retention. It is suggested that this activity is associated with a failure of urethral sphincter relaxation.
一种肌电活动，以前被称为“假性肌强直”，可使用同心针电极从尿道括约肌的横纹肌记录到。这种活动有两个组成部分，复杂重复放电和减速爆发。后者通常在记录中占主导，听起来很像肌强直放电。对这些放电的分析表明，它们是“奇异重复放电”的一种形式，因此是由肌纤维之间的兴奋电紧张性扩布引起的，而非运动轴突终末分支产生的兴奋所致。在15名有尿道功能障碍症状的女性中发现了大量此类活动，其中11名有尿潴留。有人认为这种活动与尿道括约肌松弛功能障碍有关。
