Dawson Samantha J, Sawatsky Megan L, Lalumière Martin L
Department of Psychology, Queen's University, Kingston, ON, Canada.
Arch Sex Behav. 2015 Aug;44(6):1527-35. doi: 10.1007/s10508-015-0519-z. Epub 2015 Mar 27.
Vaginal vasocongestion and lubrication serve to prepare the vaginal lumen for sexual activity. Lubrication is important for sexual functioning and difficulties with lubrication are one of the most commonly reported symptoms of sexual dysfunction. Few studies have empirically examined how vasocongestion and lubrication relate to one another and there are currently no well-established measures of lubrication. In this study, we designed and tested a simple method to assess lubrication at the vaginal introitus in 19 healthy women, using litmus test strips. We examined the relationship between lubrication and vaginal vasocongestion (measured with a photoplethysmograph) when elicited by audiovisual sexual stimuli (male-female sexual interactions). Lubrication was elicited by the sexual stimuli and was strongly correlated with reports of sexual arousal. Unexpectedly, lubrication was not correlated with vasocongestion, even though the latter was also elicited by the sexual stimuli. We discuss the implications of these findings for informing our understanding of the female sexual response and the potential clinical and scientific utility of this new measure.
阴道血管充血和润滑有助于为性活动准备阴道管腔。润滑对性功能很重要，润滑困难是性功能障碍最常报告的症状之一。很少有研究实证检验血管充血和润滑之间的关系，目前也没有完善的润滑测量方法。在本研究中，我们设计并测试了一种简单方法，使用石蕊试纸条对19名健康女性的阴道外口润滑情况进行评估。我们研究了在视听性刺激（男女之间的性互动）引发下，润滑与阴道血管充血（用光电体积描记法测量）之间的关系。性刺激引发了润滑，且润滑与性唤起报告密切相关。出乎意料的是，尽管血管充血也是由性刺激引发的，但润滑与血管充血并无关联。我们讨论了这些发现对于增进我们对女性性反应的理解以及这种新测量方法潜在的临床和科学效用的意义。
