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Biol Psychol. 2019 Jul;145:159-166. doi: 10.1016/j.biopsycho.2019.05.003. Epub 2019 May 8.

Concurrent measurement of genital lubrication and blood flow during sexual arousal.

Author information

1
Department of Psychology, 62 Arch Street, Humphrey Hall, Queen's University, Kingston, ON K7L 3N6, Canada.
2
Faculty of Medicine, 451 Smyth Road, Roger Guindon Hall, University of Ottawa, Ottawa, ON K1H 8M5, Canada.
3
Department of Psychology, 62 Arch Street, Humphrey Hall, Queen's University, Kingston, ON K7L 3N6, Canada. Electronic address: caroline.pukall@queensu.ca.

Abstract

Genital lubrication and blood flow are theoretically related outcomes of women's sexual response that prepare the genitals for sexual activity. Despite its importance for sexual function, few experimental studies have directly assessed genital lubrication or empirically demonstrated how genital lubrication and blood flow relate during sexual arousal. In this study, 36 women viewed stimuli that varied by sexual activity intensity (nonsexual, low-intensity sexual, and high-intensity sexual) while their genital responses were assessed using concurrent measures of genital lubrication (using litmus test strips) and genital blood flow (using laser Doppler imaging). Both measures detected a genital response to high-intensity sexual stimuli relative to nonsexual; however, only the laser Doppler imager was sensitive to varying degrees of genital response elicited by stimuli of different sexual activity intensities. The two measures of genital response were suitable for repeated measurement within a single session. Genital lubrication and blood flow were positively correlated for the high-intensity sexual stimuli. Implications for the assessment of women's genital response and understanding women's sexual arousal are discussed.

KEYWORDS:

Genital response; Laser Doppler imaging; Lubrication; Sexual psychophysiology

PMID:
31075363
DOI:
10.1016/j.biopsycho.2019.05.003
[Indexed for MEDLINE]

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