Instituto de Neuroetología, Universidad Veracruzana, Av. Luis Castelazo Ayala s/n, Colonia Industrial Las Animas C.P. 91190, Xalapa Ver, Mexico.
Physiol Behav. 2010 May 11;100(2):148-53. doi: 10.1016/j.physbeh.2010.02.015. Epub 2010 Feb 24.
In rats, sexual reward, appetitive sexual behaviors and reproduction are modulated by the amount and rate of vaginocervical stimulation. Here the effect of clitoral stimulation (CLS) on proceptivity was assessed. In Exp 1, ovariectomized, hormone-primed Wistar females formed three groups: G1 (1 CLS every second), G2 (1 CLS every 5s) and G3 (no CLS). Precopulatory CLS consisted of 5cycles of 1min of stimulation with the tip of a cotton swab connected to a vibrator device, followed by 1-2min of rest. CLS increased proceptive behavior in G1 compared to G2, but not compared to G3. In Exp 2, gonadally-intact rats in late proestrous received CLS prior to copulation. No differences in sexual behavior were detected between the groups, but CLS enhanced reproduction in females that received >9 intromissions. 28, 66 and 10% of females became pregnant in G1, G2, and G3, respectively. These data indicate that precopulatory CLS affects proceptive behaviors depending on the pattern and rhythm of stimulation in hormone-primed females. In virgin rats that have received sufficient vagino cervical stimulation CLS also increases fertility.
在大鼠中，阴道颈刺激的量和速率调节着性奖赏、欲望性行为和生殖。本文评估了阴蒂刺激（CLS）对求爱行为的影响。在实验 1 中，去卵巢、激素预处理的 Wistar 雌性大鼠分为三组：G1（每秒 1 次 CLS）、G2（每 5 秒 1 次 CLS）和 G3（无 CLS）。在预交配期，CLS 由连接到振动器装置的棉签尖端进行 5 分钟的刺激，每次 1 分钟，然后休息 1-2 分钟。与 G2 相比，G1 中的 CLS 增加了求爱行为，但与 G3 相比没有增加。在实验 2 中，在发情后期的去卵巢大鼠在交配前接受 CLS。各组之间的性行为没有差异，但 CLS 增强了接受 >9 次插入的雌性动物的繁殖能力。G1、G2 和 G3 组中分别有 28%、66%和 10%的雌性怀孕。这些数据表明，在激素预处理的雌性中，预交配期 CLS 影响求爱行为取决于刺激的模式和节律。在接受过足够阴道颈刺激的处女大鼠中，CLS 也增加了生育能力。
