Vaginally Activated Orgasm and Penile Size…
“More Frequent Vaginal Orgasm is Associated with Experiencing Greater Excitement from Deep Vaginal Stimulation.”(1) This is the title of a research article in a recent edition of the Journal of Sexual Medicine, the number-one-ranked scientific journal dedicated to sexual medicine.
Authored by Dr. Stuart Brody and his group at the University of West Scotland in Paisley, as well as researchers from the Czech Republic, this study continues Dr. Brody’s research into the differences between clitoral and vaginal orgasm (or “vaginally activated orgasm”) and the “primacy of the penis.”
Dr. Brody is of the opinion that penile-vaginal intercourse (“PVI”) leads to greater vaginal orgasm consistency and increased pleasure due to the increased contractions and intensity of a vaginally activated (as compared to a clitoral) orgasm—especially in a situation where the vaginal walls are distended and penetrated by a large penis, accomplishing greater depth and distension either secondary to large penile size or, conversely, by a tightened vagina.
Dr. Emanuelle Janini and her colleagues in Italy have previously shown, in an elegant article also published in the Journal of Sexual Medicine(2), the difference between clitoral and vaginally activated orgasm. Clitoral orgasms are produced by direct stimulation of the clitoral hood, body and glans, and vaginally activated orgasms are produced by direct stimulation of the anterior vaginal wall in the area of the “G-spot,” as well as by direct stimulation of the cervix deep in the vaginal canal and by distension of the vaginal barrel in general. The vulva (lips and clitoris) and the outer one-third of the vaginal canal are innervated by both skeletal nerves (the ones we can “feel” and control) and by the autonomic (or “automatic”) nervous system (the nerves we cannot control), which tend to respond to increases in pressure, distension and “stretching.”
In addition to verifying Janinni’s findings that anterior vaginal wall and, to an extent, deep vaginal and cervical innervation and sensitivity contribute to vaginally activated orgasm associated with friction and thrust, Dr. Brody further believes that masturbation early in life which stimulates the interior of the vagina may lead to greater vaginal orgasm consistency.
Dr. Brody and other sex researchers feel that the orgasms induced by clitoral stimulation and by PVI differ in important ways, including indices of psychological and physical health and relationship satisfaction, maintaining that vaginal orgasm produced by PVI is associated with improved physiological and sexual functioning in women. A robust literature from Dr. Brody and associated researchers observes the differences produced by PVI, including greater tactile sensitivity, higher heart rate variability, greater indices of sexual arousal, less functional pelvic musculoskeletal blockage, lower likelihood of developing female sexual arousal disorder, greater satisfaction with sex life and other aspects of life, emotional regulation and intimate relationship function.
Additional evidence exists indicating a direct relationship between penis size and vaginal orgasm consistency and that women tend to prefer men with larger penises. This has been confirmed in cross-cultural samples and is consistent with theories of adaptive function of vaginally activated orgasm. Multiple studies have found that intimate relationship quality and satisfaction is associated with vaginal orgasm. Vaginal orgasm is associated with greater friction and penile depth, either from a larger penis or, theoretically, a tightened vagina, especially if the perineum is elevated and vaginal musculature tightened, leading to greater anterior vaginal wall stimulation, more penile-produced vaginal distension and stimulation and greater stretching of the erectile tissue in the bulbs and crurae of the clitoris as it “roots” into the anterior vaginal wall.
In defense of the clitoris, Dr. Cheryl Shih and colleagues from the University of Washington and Minnesota have carefully mapped the nerve supply and vascular flow phenomena of the glans clitoris and surrounding structures and found the area to be rich in blood flow and richer in cutaneous receptors than the glans penis.(3) And, in a thorough review of the subject also in the Journal of Sexual Medicine, Dr. Zlatko Pastor, a Czech from Charles University in Prague, studied female ejaculation orgasm vs. coital incontinence of urine and found that “squirting” (expulsion of quantities of urine) and true female ejaculation are two separate physiological components of female sexuality.(4)
Female ejaculation orgasm manifests itself as either a true female ejaculation of a small quantity of whitish secretions from the female prostate (small glands with openings surrounding the urethral opening) or squirting of a larger amount of diluted and changed urine. Both phenomena may occur simultaneously. Coital incontinence may be divided into penetration and orgasmic forms, with penetration incontinence occurring more frequently, usually a component of “stress urinary incontinence” in a woman who is incontinent with instances of increased intra-abdominal pressure (“bearing down”) at non-coital times as well. Both of these phenomena appear to coexist with vaginally activated orgasm and stimulation of the anterior vaginal wall, with “squirting” being somewhat more common than true female ejaculation.
This of course leads directly to the biomechanical and physiological changes produced by so-called “vaginal tightening operations” and why they appear to work so well in select patients. For this, my friends, you will have to stay tuned until my next post, available in 3-4 weeks on this site!
(1) Brody S, Klapilova K and Krejcova L. “More Ferquent Vaginal Orgasm is Associated with Experiencing Greater Excitement from Deep Vaginal Stimulation.” Journal of Sexual Medicine, 2013, Vol. 10, pp. 1730-1736.
(2) Jannini EA, Rubio-Casilas A, Whipple B, Buisson O, Komisaruk B and Brody S. “Female Orgasm(s): One, Two, Several.” Journal of Sexual Medicine, 2012, Vol. 9, pp. 956-975.
(3) Shih C, Cold CJ and Yang CC. “The Pars Intermedia: An Anatomic Basis for a Coordinated Vascular Response to Female Genitaal Arousal” and “Cutaneous Corpuscular Receptors of the Human Glans Clitoris: Descriptive Characteristics and Comparison with the Glans Penis.” Journal of Sexual Medicine, 2013, Vol. 10, pp.1526-1530 and pp. 1783-1789, respectively.
(4) Pastor Z. “Female Ejaculation Orgasm vs. Coital Incontinence: A Systematic Review.” Journal of Sexual Medicine, 2013, Vol. 10, pp. 1682-1691.