Sexual arousability and the menstrual cycle

Area of Science:

• Reproductive Endocrinology
• Human Sexuality
• Psychophysiology

Background:

• Understanding female sexual response is complex.
• Menstrual cycle phases and hormonal fluctuations may influence sexual arousal.
• Individual differences in sexual arousability are notable.

Purpose of the Study:

• To investigate the relationship between menstrual cycle phase, hormone levels, and sexual arousal in regularly cycling women.
• To assess both subjective and physiological measures of sexual arousal.
• To explore individual variations in sexual arousability.

Main Methods:

• A balanced experimental design was used with 30 regularly cycling women (20-30 years old).
• Assessments were conducted during follicular, ovulatory, and luteal phases in a laboratory setting.
• Sexual arousal was measured via self-report and vaginal photoplethysmography; hormone levels (estradiol, progesterone, testosterone) were determined by radioimmunoassay.

Main Results:

• Subjective sexual arousal did not differ significantly across menstrual cycle phases.
• Physiological arousal showed significantly higher mean levels during the follicular and luteal phases compared to the ovulation phase.
• While hormones fluctuated predictably, wide individual differences in absolute values were observed; correlations between hormones and arousal were generally low and insignificant, though some testosterone-related associations were noted in subgroups.

Conclusions:

• Physiological sexual arousal, but not subjective arousal, varies across the menstrual cycle in women.
• Hormonal levels show considerable individual variability and have limited correlation with overall sexual arousal.
• Testosterone may play a role in sexual arousability, warranting further investigation into specific subgroups.