title: Evidence for a curvilinear relationship between sympathetic nervous system activation and women's physiological sexual arousal.
abstract: There is increasing evidence that women's physiological sexual arousal is facilitated by moderate sympathetic nervous system (SNS) activation. Literature also suggests that the level of SNS activation may play a role in the degree to which SNS activity affects sexual arousal. We provide the first empirical examination of a possible curvilinear relationship between SNS activity and women's genital arousal using a direct measure of SNS activation in 52 sexually functional women. The relationship between heart rate variability (HRV), a specific and sensitive marker of SNS activation, and vaginal pulse amplitude (VPA), a measure of genital arousal, was analyzed. Moderate increases in SNS activity were associated with higher genital arousal, while very low or very high SNS activation was associated with lower genital arousal. These findings imply that there is an optimal level of SNS activation for women's physiological sexual arousal.
authors.affiliation: Department of Psychology, University of Texas at Austin, Austin, Texas 78712, USA. tierney.lorenz@gmail.com
authors.forename: Tierney Ahrold
authors.initials: TA
authors.lastname: Lorenz
authors.forename: Christopher B
authors.initials: CB
authors.lastname: Harte
authors.forename: Lisa Dawn
authors.initials: LD
authors.lastname: Hamilton
authors.forename: Cindy M
authors.initials: CM
authors.lastname: Meston
mesh_terms: D000293:Adolescent; D000328:Adult; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D017156:Photoplethysmography; D012725:Sexual Behavior / Q000502:physiology*; D013564:Sympathetic Nervous System / Q000502:physiology*; D014621:Vagina / Q000502:physiology*
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