Dykstra D, Sidi A, Cameron J, Magness J, Stradal L, Portugal J
J Urol. 1987 Jan;137(1):77-9. doi: 10.1016/s0022-5347(17)43877-8.
We determined sacral reflex latencies and morphologies in 18 neurologically normal patients and 83 with neurological disease by stimulating the glans penis or clitoris using electrical and a new technique of mechanical stimulation, and recording from the external urethral sphincter. The results with both stimulation techniques were compared among various diagnostic groups. In normal patients the mean sacral reflex latencies were 35.3 +/- 2.5 (standard deviation) msec. with electrical stimulation, and 39.1 +/- 4.0 msec. with mechanical stimulation. The mean reflex latencies in patients with lower motor neuron lesions studied by both methods were statistically longer than in normal subjects, and the mean reflex latencies in patients with upper motor neuron impairment studied by both methods were not statistically different from those in normal subjects. The morphological findings of the reflex tracings suggest that both types of evoked responses follow the same general anatomical pathway and both resemble a special human flexor reflex. The mechanical technique has advantages over the electrical technique because it is less painful and in certain instances it is easier to obtain.
我们通过使用电刺激和一种新的机械刺激技术刺激阴茎头或阴蒂，并从尿道外括约肌记录，测定了18例神经功能正常的患者和83例患有神经系统疾病的患者的骶反射潜伏期和形态。在不同诊断组中比较了两种刺激技术的结果。在正常患者中，电刺激时骶反射平均潜伏期为35.3±2.5（标准差）毫秒，机械刺激时为39.1±4.0毫秒。两种方法研究的下运动神经元损伤患者的平均反射潜伏期在统计学上长于正常受试者，两种方法研究的上运动神经元损伤患者的平均反射潜伏期与正常受试者在统计学上无差异。反射描记的形态学结果表明，两种诱发反应均遵循相同的一般解剖途径，且均类似于一种特殊的人类屈肌反射。机械技术优于电技术，因为它疼痛较轻，在某些情况下更容易实施。
