Lavoisier P, Proulx J, Courtois F, De Carufel F, Durand L G
Hôpital Hôtel-Dieu, Départment de psychiatrie, Montréal, Québec, Canada.
J Urol. 1988 Jan;139(1):176-9. doi: 10.1016/s0022-5347(17)42348-2.
The mechanism of penile erection and erectile dysfunction is still unclear and widely debated. The role of the perineal muscles in the erectile process, especially in changes in intracavernous pressure, is increasingly being studied on the hypothesis that perineal muscular contractions are essential to full penile rigidity. In a previous investigation we studied the correlation between voluntary perineal muscle contractions and intracavernous pressure during artificially induced erections. The purpose of the current study was to examine whether under normal conditions of nocturnal erection a similar relationship exists between the electromyographic activities of perineal muscles and changes in penile rigidity. Nocturnal penile recordings were made of seven volunteers with psychogenic erectile dysfunctions. During nocturnal erections simultaneous computerized recordings were made of penile tumescence, penile rigidity, and electromyographic activities of perineal muscles. The peaks for the three variables were reached simultaneously. The results of this study suggest the existence of two different physiologic phases: a vascular phase and a muscular phase. Furthermore, in cases of dysfunctions, specific diagnostic assessment and therapeutic management will be required for both penile tumescence and penile rigidity.
阴茎勃起和勃起功能障碍的机制仍不清楚，且存在广泛争议。会阴肌在勃起过程中的作用，尤其是对海绵体内压变化的作用，正越来越多地基于会阴肌收缩对阴茎完全勃起至关重要这一假设进行研究。在之前的一项研究中，我们研究了人工诱导勃起期间随意会阴肌收缩与海绵体内压之间的相关性。本研究的目的是检查在夜间勃起的正常情况下，会阴肌的肌电活动与阴茎硬度变化之间是否存在类似关系。对7名患有心因性勃起功能障碍的志愿者进行了夜间阴茎记录。在夜间勃起期间，同时对阴茎肿胀、阴茎硬度和会阴肌的肌电活动进行计算机记录。这三个变量的峰值同时出现。本研究结果表明存在两个不同的生理阶段：血管阶段和肌肉阶段。此外，在功能障碍的情况下，对于阴茎肿胀和阴茎硬度都需要进行特定的诊断评估和治疗管理。
