Meuwissen I, Over R
Department of Psychology, La Trobe University, Bundoora, Australia.
Arch Sex Behav. 1993 Oct;22(5):403-13. doi: 10.1007/BF01542556.
Genital responses to erotic film and fantasy were recorded from 10 women at five phases of the menstrual cycle by means of vaginal photoplethysmography. Relationships between baseline (prestimulation) and difference (stimulation minus prestimulation) levels of response were examined. Neither vaginal blood volume nor average pulse amplitude conformed to the law of initial value ("the higher the baseline level, the less will be the difference score"). Baseline levels and difference scores generally were positively correlated at each phase of the menstrual cycle in the case of average pulse amplitude. For blood volume the correlations between baseline levels and difference scores were inconsistent in direction and small in magnitude, but trends differed between phases of the menstrual cycle. It is recommended that measures of female sexual arousal obtained through testing women who are at different phases of the cycle should not be aggregated unless it is established that the relationship between baseline levels and difference scores is uniform across phases.
通过阴道光电容积描记法记录了10名女性在月经周期的五个阶段对色情影片和幻想的生殖器反应。研究了基线（刺激前）和反应差异水平（刺激后减去刺激前）之间的关系。阴道血容量和平均脉搏幅度均不符合初始值定律（“基线水平越高，差异得分越低”）。在月经周期的每个阶段，平均脉搏幅度的基线水平和差异得分通常呈正相关。对于血容量，基线水平和差异得分之间的相关性在方向上不一致且幅度较小，但在月经周期的不同阶段趋势有所不同。建议除非确定基线水平和差异得分之间的关系在各阶段是一致的，否则不应汇总通过测试处于月经周期不同阶段的女性所获得的女性性唤起测量值。
