8–13 Hz Fluctuations in Rectal Pressure Are an Objective Marker of Clitorally-Induced Orgasm in Women

  title={8–13 Hz Fluctuations in Rectal Pressure Are an Objective Marker of Clitorally-Induced Orgasm in Women},
  author={Jaap J. van Netten and Janniko R. Georgiadis and Arie Nieuwenburg and Rudie Kortekaas},
  journal={Archives of Sexual Behavior},
Orgasm is a subjective experience accompanied by involuntary muscle contractions. We hypothesized that orgasm in women would be distinguishable by frequency analysis of a perineal muscle-derived signal. Rectal pressure, an index of perineal muscle activity, was measured continuously in 23 healthy women during different sexual tasks: receiving clitoral stimulation, imitation of orgasm, and attempt to reach orgasm, in which case the women were asked to report whether orgasm had been reached… 
Female Orgasm: Correlation of Objective Physical Recordings with Subjective Experience
  • R. Levin
  • Psychology, Medicine
    Archives of sexual behavior
  • 2008
It is shown that the increase in heart rate at orgasm in females induced by clitoral stimulation was associated with the woman’s rating of their orgasm intensity; higher heart rates were associated with a greater intensity of orgasm.
Objective Markers of Female Orgasm: A Reply to Levin
In our recent article (van Netten, Georgiadis, Nieuwenberg, & Kortekaas, 2008), we presented a new method and a novel finding: that integrated spectral power in the 8–13 Hz bin of rectal pressure is
Pleasure and pain: the effect of (almost) having an orgasm on genital and nongenital sensitivity.
It is suggested that enhancing stimulation pleasurableness, psychological sexual arousal and lubrication mitigate normative increases in pain sensitivity during sexual activity, and underscore the importance of measuring both pleasure and pain in sensation research.
The human female orgasm: critical evaluations of proposed psychological sequelae
Orgasm is assumed to be the height of sexual pleasure, reinforcing the recurrence of sexual behaviors. Surprisingly, data supporting the role of orgasm as a reward in women appear lacking. The most
What is orgasm? A model of sexual trance and climax via rhythmic entrainment
  • A. Safron
  • Medicine, Psychology
    Socioaffective neuroscience & psychology
  • 2016
A novel mechanistic model of sexual stimulation and orgasm is introduced wherein sexual stimulation induces entrainment of coupling mechanical and neuronal oscillatory systems, thus creating synchronized functional networks within which multiple positive feedback processes intersect synergistically to contribute to sexual experience.
Physiology of Orgasm
The human orgasm, although tantalizingly short, is perhaps the greatest bodily pleasure that most men and women can experience without recourse to drugs. It is a complex of subjective mental with
Clitoral anesthesia disrupts paced copulation in the female rat
It is suggested that clitoral stimulation in the rat serves as both a reward signal and may contribute to the detection of differences in copulatory stimuli that are critical to pacing and potentially, the initiation of pregnancy.
Female genito-pelvic reflexes: an overview
More neurophysiological research is needed to search for the implications of these genito-pelvic reflexes for female sexual (dys)function, and a small number of studies have been published on this issue.
Future Targets for Female Sexual Dysfunction.
Future treatment targets include pharmacologic modulation of emotional learning circuits, restoration of normal tactile sensation, growth factor therapy, gene therapy, stem cell-based therapies, and regenerative medicine.
Physiology of women's sexual function: basic knowledge and new findings.
This manuscript encompasses data presented at the 3rd International Consultation on Sexual Medicine in Paris, France, July 10-13, 2009, and contains data about the actual role of sexual arousal in women in both procreation/reproduction and recreation/pleasure.


The female orgasm: Pelvic contractions
Eleven nulliparous women manually self-stimulated to orgasm, each on three separate occasions, and women of different types showed marked differences in orgasm duration and number of contractions.
Relationships among cardiovascular, muscular, and oxytocin responses during human sexual activity
Positive correlations between measures are consistent with a possible functional role for OT in human sexual response and subjective orgasm intensity correlated significantly with increased levels of OT in multiorgasmic women only.
Plasma oxytocin increases in the human sexual response.
Plasma OT levels increased during sexual arousal in both women and men and were significantly higher during orgasm/ejaculation than during prior baseline testing, suggesting that the temporal pattern of secretion could be related to smooth muscle contractions of the reproductive system during orgasm.
Female orgasm: role of pubococcygeus muscle.
Data suggest the pubococcygeus muscle plays an important part in the pathophysiology of female orgasm.
Fetal heart rate changes and uterine activity during coitus
Fetal heart rate and uterine activity were monitored during sexual intercourse in three otherwise normal gravid women at varying gestational ages to postulate that coitus is equivalent to an un‐monitored contraction stress test.
Laumann (E.O), Gagnon (J.H), Michael (R.T), Michaels (S) — The Social Organization of Sexuality. Sexual Practices in the United States; Michael (R.), Gagnon (J.), Laumann (E.), Kolata (G.) — Sex in America. A Definitive Survey
PSYCHIATRIC SERVIcES . February 1996 Vol.47 No.2 205 ture, doubting hen adequacy as a parent, and feeling isolated in what she at first believed to be a unique situation, Dew describes an initial
The Social Organization of Sexuality: Sexual Practices in the United States
This survey of sexual practices in the United States has been combed by the media for items of interest to the public: monogamous sex is much more widespread in this country than has been thought;
The nature of human orgasm: a critical review of major trends.
A new multidimensional model of the psychological experience of orgasm is described with a view to futhering a biopsychological approach applicable to both sexes.
The Case of the Female Orgasm: Bias in the Science of Evolution
Why women evolved to have orgasms - when most of their primate relatives don't - is a persistent mystery among evolutionary biologists. In pursuing this mystery, Elisabeth Lloyd arrives at another:
Arch Sex Behav
  • Arch Sex Behav
  • 2008