G-spot

Two primary methods have been used to define and locate the G-spot as a sensitive area in the vagina: self-reported levels of arousal during stimulation, and stimulation of the G-spot leading to female ejaculation. Ultrasound technology has also been used to identify physiological differences between women, and changes to the G-spot region during sexual activity.See [https://books.google.com/books?id=amNcvrLCGZEC&pg=PT98 page 98] {{Webarchive|url=https://web.archive.org/web/20201210124605/https://books.google.com/books?id=amNcvrLCGZEC&pg=PT98 |date=2020-12-10 }} for the 2009 King's College London's findings on the G-spot and [https://books.google.com/books?id=kP9bCflZpVkC&pg=PA145 page 145] {{Webarchive|url=https://web.archive.org/web/20160509183226/https://books.google.com/books?id=kP9bCflZpVkC&pg=PA145 |date=2016-05-09 }} for ultrasound/physiological material with regard to the G-spot. {{cite book|author=Ashton Acton|title=Issues in Sexuality and Sexual Behavior Research: 2011 Edition|publisher=ScholarlyEditions|year=2012|access-date=January 24, 2014|isbn=978-1464966873|url=https://books.google.com/books?id=amNcvrLCGZEC|archive-date=July 17, 2021|archive-url=https://web.archive.org/web/20210717165213/https://books.google.com/books?id=amNcvrLCGZEC|url-status=live}}{{cite book|first1=David M.|last1=Buss|first2=Cindy M.|last2=Meston|title=Why Women Have Sex: Understanding Sexual Motivations from Adventure to Revenge (and Everything in Between)|publisher=Macmillan|year=2009|access-date=January 24, 2014|pages=35–36|isbn=978-1429955225|url=https://books.google.com/books?id=slyflT85lXIC&pg=PA35|archive-date=December 10, 2020|archive-url=https://web.archive.org/web/20201210124618/https://books.google.com/books?id=slyflT85lXIC&pg=PA35|url-status=live}}

The location of the G-spot is typically reported as being about {{convert|50|to|80|mm|in|abbr=on}} inside the vagina, on the front wall.{{cite book | first = Ethel | last = Sloane | title = Biology of Women | publisher = Cengage Learning | year = 2002 | page = 34 | access-date = August 25, 2012 | isbn = 9780766811423 | url = https://books.google.com/books?id=kqcYyk7zlHYC&pg=PA34 | archive-date = December 10, 2020 | archive-url = https://web.archive.org/web/20201210124554/https://books.google.com/books?id=kqcYyk7zlHYC&pg=PA34 | url-status = live }} For some women, stimulating this area creates a more intense orgasm than clitoral stimulation. The G-spot area has been described as needing direct stimulation, such as two fingers pressed deeply into it.{{cite book|first1=Robert|last1=Crooks|first2=Karla|last2=Baur|title=Our Sexuality|publisher=Cengage Learning|year=2010|access-date=January 24, 2014|pages=169–170|isbn=978-0495812944|url=https://books.google.com/books?id=MpRnPtmdRVwC&pg=PA169|archive-date=December 10, 2020|archive-url=https://web.archive.org/web/20201210125648/https://books.google.com/books?id=MpRnPtmdRVwC&pg=PA169|url-status=live}} Attempting to stimulate the area through sexual penetration, especially in the missionary position, is difficult because of the particular angle of penetration required.

File:G-Spot 1.png

Women usually need direct clitoral stimulation in order to orgasm,{{cite book|first=Martha|last=Rosenthal|title=Human Sexuality: From Cells to Society|publisher=Cengage Learning|year=2012|pages=134–135|access-date=January 25, 2014|isbn=978-0618755714|url=https://books.google.com/books?id=d58z5hgQ2gsC&pg=PT154|archive-date=June 14, 2013|archive-url=https://web.archive.org/web/20130614204808/http://books.google.com/books?id=d58z5hgQ2gsC&pg=PT154|url-status=live}}{{cite journal | first1 = Dorothy | last1 = Kammerer-Doak | first2 = Rebecca G. | last2 = Rogers | title = Female Sexual Function and Dysfunction | journal = Obstetrics and Gynecology Clinics of North America | volume = 35 | issue = 2 | pages = 169–183 | date = June 2008 | pmid = 18486835 | doi = 10.1016/j.ogc.2008.03.006 | quote=Most women report the inability to achieve orgasm with vaginal intercourse and require direct clitoral stimulation ... About 20% have coital climaxes...}} and G-spot stimulation may be best achieved by using both manual stimulation and vaginal penetration. A yoni massage also includes manual stimulation of the G-spot.Inari H. Hanel: [https://yoni-massage.info/der-g-punkt-in-der-yoni-massage Der G-Punkt in der Yoni-Massage] {{Webarchive|url=https://web.archive.org/web/20210414101456/https://yoni-massage.info/der-g-punkt-in-der-yoni-massage |date=2021-04-14 }}

Sex toys are available for G-spot stimulation. One common sex toy is the specially-designed G-spot vibrator, which is a phallic vibrator that has a curved tip and attempts to make G-spot stimulation easy.{{cite book | author = Tristan Taormino | title = The Big Book of Sex Toys | publisher = Quiver | year = 2009 | pages = 100–101 | access-date = August 25, 2012 | isbn = 9781592333554 | url = https://books.google.com/books?id=Hfly-iMkWRkC&pg=PA100 | author-link = Tristan Taormino | archive-date = December 10, 2020 | archive-url = https://web.archive.org/web/20201210124914/https://books.google.com/books?id=Hfly-iMkWRkC&pg=PA100 | url-status = live }} G-spot vibrators are made from the same materials as regular vibrators, ranging from hard plastic, rubber, silicone, jelly, or any combination of them. The level of vaginal penetration when using a G-spot vibrator depends on the woman, because women's physiology is not always the same. The effects of G-spot stimulation when using the penis or a G-spot vibrator may be enhanced by additionally stimulating other erogenous zones on a woman's body, such as the clitoris or vulva as a whole. When using a G-spot vibrator, this may be done by manually stimulating the clitoris, including by using the vibrator as a clitoral vibrator, or, if the vibrator is designed for it, by applying it so that it stimulates the head of the clitoris, the rest of the vulva and the vagina simultaneously.

A 1981 case study reported that stimulation of the anterior vaginal wall made the area grow by fifty percent and that self-reported levels of arousal/orgasm were deeper when the G-spot was stimulated.{{cite journal |author1=Addiego, F. |author2=Belzer, E. G. |author3=Comolli, J. |author4=Moger, W. |author5=Perry, J. D. |author6-link=Beverly Whipple |author6=Whipple, B. |year =1981|title =Female ejaculation: a case study. |journal =The Journal of Sex Research|publisher =Journal of Sex Research |volume =17 |number =1|pages =13–21 |doi =10.1080/00224498109551094}}{{cite book|author=David H. Newman|title=Hippocrates' Shadow|publisher=Simon & Schuster|year=2009|access-date=January 24, 2014|page=130|isbn=978-1416551546|url=https://books.google.com/books?id=WdWqPHgu3c8C&pg=PA130|archive-date=December 10, 2020|archive-url=https://web.archive.org/web/20201210124714/https://books.google.com/books?id=WdWqPHgu3c8C&pg=PA130|url-status=live}} Another study, in 1983, examined eleven women by palpating the entire vagina in a clockwise fashion, and reported a specific response to stimulation of the anterior vaginal wall in four of the women, concluding that the area is the G-spot.{{cite journal |author1=Goldberg, DC |author2=Whipple, B |author3=Fishkin, RE |author4=Waxman H |author5=Fink PJ |author6=Wiesberg M. |year =1983 |title =The Grafenberg Spot and female ejaculation: a review of initial hypotheses. |journal =J Sex Marital Ther |volume =9 |pages =27–37 |pmid =6686614 |issue =1 |doi=10.1080/00926238308405831}} In a 1990 study, an anonymous questionnaire was distributed to 2,350 professional women in the United States and Canada with a subsequent 55% return rate. Of these respondents, 40% reported having a fluid release (ejaculation) at the moment of orgasm, and 82% of the women who reported the sensitive area (Gräfenberg spot) also reported ejaculation with their orgasms. Several variables were associated with this perceived existence of female ejaculation.{{cite journal |author1=Darling, CA |author2=Davidson, JK |author3=Conway-Welch, C. |year =1990 |title =Female ejaculation: perceived origins, the Grafenberg spot/area, and sexual responsiveness |journal = Arch Sex Behav |volume =19 |pages =29–47 |doi =10.1007/BF01541824 |pmid =2327894 |issue =1|s2cid=25428390 }}

Some research suggests that G-spot and clitoral orgasms are of the same origin. Masters and Johnson were the first to determine that the clitoral structures surround and extend along and within the labia. Upon studying women's sexual response cycle to different stimulation, they observed that both clitoral and vaginal orgasms had the same stages of physical response, and found that the majority of their subjects could only achieve clitoral orgasms, while a minority achieved vaginal orgasms. On this basis, Masters and Johnson argued that clitoral stimulation is the source of both kinds of orgasms,{{cite book |last=Federation of Feminist Women's Health Centers |year=1991 |title=A New View of a Woman's Body |publisher= Feminist Health Press |pages=46 |isbn=978-0-9629945-0-0}}{{cite book | first1= John |last1=Archer |first2=Barbara |last2=Lloyd | title = Sex and Gender | publisher =Cambridge University Press|year = 2002|pages=[https://archive.org/details/sexgender0000arch_l8q2/page/85 85]–88| access-date = August 25, 2012| isbn = 9780521635332 |url = https://archive.org/details/sexgender0000arch_l8q2| url-access= registration }} reasoning that the clitoris is stimulated during penetration by friction against its hood.{{Cite book | author-link = Elisabeth Lloyd | first = Elisabeth Anne | last = Lloyd | title = The Case Of The Female Orgasm: Bias In The Science Of Evolution | isbn = 9780674017061 | publisher = Harvard University Press | year = 2005 | access-date = 5 January 2012 | page = 53 | url = https://books.google.com/books?id=6GFNvA6TvlwC&pg=PA53 | archive-date = 15 June 2013 | archive-url = https://web.archive.org/web/20130615012803/http://books.google.com/books?id=6GFNvA6TvlwC&pg=PA53 | url-status = live |oclc=432675780}}

Researchers at the University of L'Aquila, using ultrasonography, presented evidence that women who experience vaginal orgasms are statistically more likely to have thicker tissue in the anterior vaginal wall. The researchers believe these findings make it possible for women to have a rapid test to confirm whether or not they have a G-spot.{{cite book|title=New Scientist|publisher=New Science Publications (original from University of California)|year=2008|access-date=January 24, 2014|page=6|volume=197|issue=2638–2649|url=https://books.google.com/books?id=o8o-AQAAIAAJ|archive-date=September 5, 2021|archive-url=https://web.archive.org/web/20210905094426/https://books.google.com/books?id=o8o-AQAAIAAJ|url-status=live}} Professor of genetic epidemiology, Tim Spector, who co-authored research questioning the existence of the G-spot and finalized it in 2009, also hypothesizes thicker tissue in the G-spot area; he states that this tissue may be part of the clitoris and is not a separate erogenous zone.{{cite book|title=New Scientist|publisher=New Science Publications (original from University of Virginia)|year=2008|access-date=March 9, 2015|page=66|url=https://books.google.com/books?id=N6lFAAAAYAAJ|archive-date=September 5, 2021|archive-url=https://web.archive.org/web/20210905094431/https://books.google.com/books?id=N6lFAAAAYAAJ|url-status=live}}

Supporting Spector's conclusion is a study published in 2005 which investigates the size of the clitoris – it suggests that clitoral tissue extends into the anterior wall of the vagina. The main researcher of the studies, Australian urologist Helen O'Connell, asserts that this interconnected relationship is the physiological explanation for the conjectured G-spot and experience of vaginal orgasms, taking into account the stimulation of the internal parts of the clitoris during vaginal penetration. While using MRI technology, O'Connell noted a direct relationship between the legs or roots of the clitoris and the erectile tissue of the "clitoral bulbs" and corpora, and the distal urethra and vagina. "The vaginal wall is, in fact, the clitoris," said O'Connell. "If you lift the skin off the vagina on the side walls, you get the bulbs of the clitoris – triangular, crescental masses of erectile tissue." O'Connell et al., who performed dissections on the female genitals of cadavers and used photography to map the structure of nerves in the clitoris, were already aware that the clitoris is more than just its glans and asserted in 1998 that there is more erectile tissue associated with the clitoris than is generally described in anatomical textbooks. They concluded that some females have more extensive clitoral tissues and nerves than others, especially having observed this in young cadavers as compared to elderly ones, and therefore whereas the majority of females can only achieve orgasm by direct stimulation of the external parts of the clitoris, the stimulation of the more generalized tissues of the clitoris via intercourse may be sufficient for others.

French researchers Odile Buisson and Pierre Foldès reported similar findings to those of O'Connell's. In 2008, they published the first complete 3D sonography of the stimulated clitoris, and republished it in 2009 with new research, demonstrating the ways in which erectile tissue of the clitoris engorges and surrounds the vagina. On the basis of this research, they argued that women may be able to achieve vaginal orgasm via stimulation of the G-spot because the highly innervated clitoris is pulled closely to the anterior wall of the vagina when the woman is sexually aroused and during vaginal penetration. They assert that since the front wall of the vagina is inextricably linked with the internal parts of the clitoris, stimulating the vagina without activating the clitoris may be next to impossible.{{cite web |last=Pappas |first=Stephanie |title=Does the Vaginal Orgasm Exist? Experts Debate |publisher=LiveScience |date=April 9, 2012 |access-date=November 28, 2012 |url=http://www.livescience.com/19579-vaginal-orgasm-debate.html |archive-date=October 11, 2016 |archive-url=https://web.archive.org/web/20161011211945/http://www.livescience.com/19579-vaginal-orgasm-debate.html |url-status=live }}{{cite journal |last1=Buisson|first1=Odile|last2=Foldès|first2=Pierre|author2-link=Pierre Foldès|title=The clitoral complex: a dynamic sonographic study.|journal=The Journal of Sexual Medicine|volume= 6|issue= 5|pages= 1223–31|year=2009|pmid=19453931 |doi=10.1111/j.1743-6109.2009.01231.x|s2cid=5096396 }}{{cite book|last=Carroll|first=Janell L.|title=Discovery Series: Human Sexuality|edition=1st|publisher=Cengage Learning|isbn=978-1111841898|year=2013|page=103|url=https://books.google.com/books?id=gU3SZSh-eXsC&pg=PT135|access-date=2015-10-27|archive-date=2021-03-10|archive-url=https://web.archive.org/web/20210310001014/https://books.google.com/books?id=gU3SZSh-eXsC&pg=PT135|url-status=live}} In their 2009 published study, the "coronal planes during perineal contraction and finger penetration demonstrated a close relationship between the root of the clitoris and the anterior vaginal wall". Buisson and Foldès suggested "that the special sensitivity of the lower anterior vaginal wall could be explained by pressure and movement of clitoris's root during a vaginal penetration and subsequent perineal contraction".

{{See also|Skene's gland|Urethral sponge}}

In 2001, the Federative Committee on Anatomical Terminology accepted female prostate as a second term for the Skene's gland, which is believed to be found in the G-spot area along the walls of the urethra. The male prostate is biologically homologous to the Skene's gland;{{cite book|first1=Gretchen M|last1=Lentz|first2=Rogerio A.|last2=Lobo|first3=David M|last3=Gershenson|first4=Vern L.|last4=Katz|title=Comprehensive Gynecology|publisher=Elsevier Health Sciences|year=2012|access-date=March 9, 2015|page=41|isbn=978-0323091312|url=https://books.google.com/books?id=X5KT_w6Nye8C&pg=PA41|archive-date=December 10, 2020|archive-url=https://web.archive.org/web/20201210124759/https://books.google.com/books?id=X5KT_w6Nye8C&pg=PA41|url-status=live}} it has been unofficially called the male G-spot because it can also be used as an erogenous zone.{{cite book|title=The Orgasm Answer Guide|isbn = 978-0-8018-9396-4|publisher=JHU Press|year=2009|pages=[https://archive.org/details/orgasmanswerguid00komi/page/108 108]–109|access-date=6 November 2011|url=https://archive.org/details/orgasmanswerguid00komi|url-access=registration|author1-link=Barry Komisaruk|author2-link=Beverly Whipple|author3-link=Sara Nasserzadeh|first1 =Barry R. |last1=Komisaruk |first2=Beverly |last2=Whipple |first3=Sara |last3=Nasserzadeh |first4=Carlos |last4=Beyer-Flores}}

Regnier de Graaf, in 1672, observed that the secretions (female ejaculation) by the erogenous zone in the vagina lubricate "in agreeable fashion during coitus". Modern scientific hypotheses linking G-spot sensitivity with female ejaculation led to the idea that non-urine female ejaculate may originate from the Skene's gland, with the Skene's gland and male prostate acting similarly in terms of prostate-specific antigen and prostate-specific acid phosphatase studies,{{cite book|first1=Vern L.|last1=Bullough|first2=Bonnie|author1-link=Bonnie Bullough|last2=Bullough|author2-link=Vern Bullough|title=Human Sexuality: An Encyclopedia|publisher=Routledge|year=2014|access-date=October 30, 2014|page=231|isbn=978-1135825096|url=https://books.google.com/books?id=UHymAgAAQBAJ&pg=PA231|archive-date=December 10, 2020|archive-url=https://web.archive.org/web/20201210124728/https://books.google.com/books?id=UHymAgAAQBAJ&pg=PA231|url-status=live}} which led to a trend of calling the Skene's glands the female prostate. Additionally, the enzyme PDE5 (involved with erectile dysfunction) has additionally been associated with the G-spot area.{{Cite journal|author=Nicola Jones|url=https://www.newscientist.com/article.ns?id=dn2495|title=Bigger is better when it comes to the G-Spot|date=3 July 2002|journal=New Scientist|access-date=28 August 2017|archive-date=6 October 2008|archive-url=https://web.archive.org/web/20081006073742/http://www.newscientist.com/article.ns?id=dn2495|url-status=dead}} Because of these factors, it has been argued that the G-spot is a system of glands and ducts located within the anterior (front) wall of the vagina. A similar approach has linked the G-spot with the urethral sponge.{{cite book|author=Janice M. Irvine|title=Disorders of Desire: Sexuality and Gender in Modern American Sexology|publisher=Temple University Press|year=2014|access-date=March 9, 2015|page=271|isbn=978-1592131518|url=https://books.google.com/books?id=uIJXT7ZCTCsC&pg=PA271|archive-date=November 5, 2020|archive-url=https://web.archive.org/web/20201105142444/https://books.google.com/books?id=uIJXT7ZCTCsC&pg=PA271|url-status=live}}{{cite book|author=Rebecca Chalker|author-link=Rebecca Chalker|title=The Clitoral Truth: The Secret World at Your Fingertips|isbn=978-1609800109|publisher=Seven Stories Press|year=2011|access-date=January 24, 2014|page=95|url=https://books.google.com/books?id=m3m3_Uq8qWkC&pg=PA95|archive-date=December 10, 2020|archive-url=https://web.archive.org/web/20201210124734/https://books.google.com/books?id=m3m3_Uq8qWkC&pg=PA95|url-status=live}}

G-spot amplification (also called G-spot augmentation or the G-Shot) is a procedure intended to temporarily increase pleasure in sexually active women with normal sexual function, focusing on increasing the size and sensitivity of the G-spot. G-spot amplification is performed by attempting to locate the G-spot and noting measurements for future reference. After numbing the area with a local anesthetic, human engineered collagen is then injected directly under the mucosa in the area the G-spot is concluded to be in.{{cite book | author = Michael L. Krychman | title = 100 Questions & Answers About Women's Sexual Wellness and Vitality: A Practical Guide for the Woman Seeking Sexual Fulfillment | publisher = Jones & Bartlett Learning | year = 2009 | page = 98 | access-date = January 24, 2014 | isbn = 978-1449630775 | url = https://books.google.com/books?id=3X7UriJY2TsC&pg=PT111 | archive-date = September 5, 2021 | archive-url = https://web.archive.org/web/20210905175839/https://books.google.com/books?id=3X7UriJY2TsC&pg=PT111 | url-status = live }}

A position paper published by the American College of Obstetricians and Gynecologists in 2007 warns that there is no valid medical reason to perform the procedure, which is not considered routine or accepted by the college; and it has not been proven to be safe or effective. The potential risks include sexual dysfunction, infection, altered sensation, dyspareunia, adhesions and scarring. The college position is that it is untenable to recommend the procedure.{{cite journal |title=ACOG Committee Opinion No. 378: Vaginal "rejuvenation" and cosmetic vaginal procedures |journal=Obstet Gynecol |volume=110 |issue=3 |pages=737–8 |date=September 2007 |pmid=17766626 |doi=10.1097/01.AOG.0000263927.82639.9b|last1=Committee On Gynecologic Practice |first1=American College of Obstetricians Gynecologists |doi-access=free }} The procedure is also not approved by the Food and Drug Administration or the American Medical Association, and no peer-reviewed studies have been accepted to account for either safety or effectiveness of this treatment.{{cite web|url=https://abcnews.go.com/print?id=4312986|work=ABC News|title=G-Shot Parties: A Shot at Better Sex?|author=Childs, Dan|date=2008-02-20|access-date=2010-01-17|archive-date=2018-06-13|archive-url=https://web.archive.org/web/20180613134030/https://abcnews.go.com/print?id=4312986|url-status=live}}

In addition to general skepticism among gynecologists, sexologists and other researchers that the G-spot exists, a team at King's College London in late 2009 suggested that its existence is subjective. They acquired the largest sample size of women to date – 1,800 – who are pairs of twins, and found that the twins did not report a similar G-spot in their questionnaires. The research, headed by Tim Spector, documents a 15-year study of the twins, identical and non-identical. According to the researchers, if one identical twin reported having a G-spot, it was more likely that the other would too, but this pattern did not materialize. Study co-author Andrea Burri believes: "It is rather irresponsible to claim the existence of an entity that has never been proven and pressurise women and men too."{{cite news |url=http://news.bbc.co.uk/1/hi/health/8439000.stm |title=BBC News - The G-spot 'doesn't appear to exist', say researchers |access-date=2010-01-04 |date=2010-01-04 |archive-date=2017-11-29 |archive-url=https://web.archive.org/web/20171129191448/http://news.bbc.co.uk/1/hi/health/8439000.stm |url-status=live }} She stated that one of the reasons for the research was to remove feelings of "inadequacy or underachievement" for women who feared they lacked a G-spot.{{cite news |url=https://www.theguardian.com/commentisfree/2010/jan/05/g-spot-women-study |title=The real G-spot myth | Yvonne Roberts | Comment is free | guardian.co.uk |work=The Guardian |access-date=2010-05-02 |location=London |date=2010-01-05 |archive-date=2018-06-13 |archive-url=https://web.archive.org/web/20180613085737/https://www.theguardian.com/commentisfree/2010/jan/05/g-spot-women-study |url-status=live }} Researcher Beverly Whipple dismissed the findings, commenting that twins have different sexual partners and techniques, and that the study did not properly account for lesbian or bisexual women.{{cite news |url=http://www.timesonline.co.uk/tol/news/science/article6973971.ece |title=What an anti-climax: G-Spot is a myth - Times Online |work= The Times|author=Lois Rogers |access-date=January 23, 2012| location=London | date=January 3, 2010|archive-date=May 31, 2010|archive-url=https://web.archive.org/web/20100531122424/http://www.timesonline.co.uk/tol/news/science/article6973971.ece}}

Petra Boynton, a British scientist who has written extensively on the G-spot debate, is also concerned about the promotion of the G-spot leading women to feel "dysfunctional" if they do not experience it. "We're all different. Some women will have a certain area within the vagina which will be very sensitive, and some won't — but they won't necessarily be in the area called the G spot," she stated. "If a woman spends all her time worrying about whether she is normal, or has a G spot or not, she will focus on just one area, and ignore everything else. It's telling people that there is a single, best way to have sex, which isn't the right thing to do."{{cite news |url=http://news.bbc.co.uk/2/hi/7254523.stm |title=BBC NEWS | Health | Female G spot 'can be detected' |work=html |access-date=2010-01-03 |date=2008-02-20 |archive-date=2018-06-13 |archive-url=https://web.archive.org/web/20180613091627/http://news.bbc.co.uk/2/hi/7254523.stm |url-status=live }}

G-spot proponents are criticized for giving too much credence to anecdotal evidence, and for questionable investigative methods; for instance, the studies which have yielded positive evidence for a precisely located G-spot involve small participant samples. While the existence of a greater concentration of nerve endings at the lower third (near the entrance) of the vagina is commonly cited,{{Cite book|first1=Wayne|last1=Weiten|first2=Dana S.|last2=Dunn|first3=Elizabeth Yost|last3=Hammer|title=Psychology Applied to Modern Life: Adjustment in the 21st Century|isbn=9781111186630|publisher=Cengage Learning|year=2011|page=386|access-date=January 5, 2012|url=https://books.google.com/books?id=CGu96TeAZo0C&pg=PT423|archive-date=June 14, 2013|archive-url=https://web.archive.org/web/20130614031527/http://books.google.com/books?id=CGu96TeAZo0C&pg=PT423|url-status=live}} some scientific examinations of vaginal wall innervation have shown no single area with a greater density of nerve endings.

Several researchers also consider the connection between the Skene's gland and the G-spot to be weak.{{cite journal |last1=Santos |first1=F |last2=Taboga |first2=S. |year=2003 |title=Female prostate: a review about biological repercussions of this gland in humans and rodents.|journal=Animal Reproduction |volume=3 |issue=1 |pages= 3–18}} The urethral sponge, however, which is also hypothesized as the G-spot, contains sensitive nerve endings and erectile tissue. Sensitivity is not determined by neuron density alone: other factors include the branching patterns of neuron terminals and cross or collateral innervation of neurons.{{cite journal|last1=Babmindra |first1=VP |last2=Novozhilova |first2=AP |last3=Bragina |first3=TA |title=The structural bases of the regulation of neuron sensitivity |journal=Neurosci. Behav. Physiol. |volume=29 |issue=6 |pages=615–20 |year=1999 |pmid=10651316 |doi=10.1007/BF02462474 |s2cid=9132976 |url=http://resources.metapress.com/pdf-preview.axd?code=q6h325761132q014&size=largest |access-date=2010-01-03 |display-authors=etal |url-status=dead |archive-url=https://web.archive.org/web/20110714081305/http://resources.metapress.com/pdf-preview.axd?code=q6h325761132q014&size=largest |archive-date=2011-07-14 |url-access=subscription }} While G-spot opponents argue that because there are very few tactile nerve endings in the vagina and that therefore the G-spot cannot exist, G-spot proponents argue that vaginal orgasms rely on pressure-sensitive nerves.

File:Clitoris Anatomy.svg

The G-spot having an anatomical relationship with the clitoris has been challenged by Vincenzo Puppo, who, while agreeing that the clitoris is the center of female sexual pleasure, disagrees with Helen O'Connell and other researchers' terminological and anatomical descriptions of the clitoris. He stated, "Clitoral bulbs is an incorrect term from an embryological and anatomical viewpoint, in fact the bulbs do not develop from the phallus, and they do not belong to the clitoris". He says that clitoral bulbs "is not a term used in human anatomy" and that vestibular bulbs is the correct term, adding that gynecologists and sexual experts should inform the public with facts instead of hypotheses or personal opinions. "[C]litoral/vaginal/uterine orgasm, G/A/C/U spot orgasm, and female ejaculation, are terms that should not be used by sexologists, women, and mass media", he said, further commenting that the "anterior vaginal wall is separated from the posterior urethral wall by the urethrovaginal septum (its thickness is 10–12 mm)" and that the "inner clitoris" does not exist. "The female perineal urethra, which is located in front of the anterior vaginal wall, is about one centimeter in length and the G-spot is located in the pelvic wall of the urethra, 2–3 cm into the vagina", Puppo stated. He believes that the penis cannot come in contact with the congregation of multiple nerves/veins situated until the angle of the clitoris, detailed by Georg Ludwig Kobelt, or with the roots of the clitoris, which do not have sensory receptors or erogenous sensitivity, during vaginal intercourse. He did, however, dismiss the orgasmic definition of the G-spot that emerged after Ernst Gräfenberg, stating that "there is no anatomical evidence of the vaginal orgasm which was invented by Freud in 1905, without any scientific basis".{{cite journal |author=Vincenzo Puppo |title=Anatomy of the Clitoris: Revision and Clarifications about the Anatomical Terms for the Clitoris Proposed (without Scientific Bases) by Helen O'Connell, Emmanuele Jannini, and Odile Buisson.|journal=ISRN Obstetrics and Gynecology |volume= 2011|issue=ID 261464 |pages=5 |date=September 2011 |pmid=21941661 |doi=10.5402/2011/261464 |pmc=3175415 |doi-access=free }}

Puppo's belief that there is no anatomical relationship between the vagina and clitoris is contrasted by the general belief among researchers that vaginal orgasms are the result of clitoral stimulation; they maintain that clitoral tissue extends, or is at least likely stimulated by the clitoral bulbs, even in the area most commonly reported to be the G-spot.{{Cite news|first=Brian|last=Alexander|url=http://todayhealth.today.msnbc.msn.com/_news/2012/01/18/10177335-does-the-g-spot-really-exist-scientist-cant-find-it|archive-url=https://web.archive.org/web/20120120032319/http://todayhealth.today.msnbc.msn.com/_news/2012/01/18/10177335-does-the-g-spot-really-exist-scientist-cant-find-it|url-status=dead|archive-date=January 20, 2012|title=Does the G-spot really exist? Scientist can't find it|publisher=MSNBC.com|date=January 18, 2012|access-date=March 2, 2012}} "My view is that the G-spot is really just the extension of the clitoris on the inside of the vagina, analogous to the base of the male penis", said researcher Amichai Kilchevsky. Because female fetal development is the "default" direction of fetal development in the absence of substantial exposure to male hormones and therefore the penis is essentially a clitoris enlarged by such hormones, Kilchevsky believes that there is no evolutionary reason why females would have two separate structures capable of producing orgasms and blames the porn industry and "G-spot promoters" for "encouraging the myth" of a distinct G-spot.

The general difficulty of achieving vaginal orgasms, which is a predicament that is likely due to nature easing the process of childbearing by drastically reducing the number of vaginal nerve endings, challenge arguments that vaginal orgasms help encourage sexual intercourse in order to facilitate reproduction. O'Connell stated that focusing on the G-spot to the exclusion of the rest of a woman's body is "a bit like stimulating a guy's testicles without touching the penis and expecting an orgasm to occur just because love is present". She stated that it "is best to think of the clitoris, urethra, and vagina as one unit because they are intimately related".{{cite web|last=Rob|first=Baedeker|title=Sex: Fact and Fiction|website=WebMD|pages=2–3|access-date=November 28, 2012|url=http://men.webmd.com/features/sex-fact-fiction?page=2|archive-date=January 12, 2014|archive-url=https://web.archive.org/web/20140112134913/http://men.webmd.com/features/sex-fact-fiction?page=2|url-status=live}} Ian Kerner stated that the G-spot may be "nothing more than the roots of the clitoris crisscrossing the urethral sponge".

A Rutgers University study, published in 2011, was the first to map the female genitals onto the sensory portion of the brain, and supports the possibility of a distinct G-spot. When the research team asked several women to stimulate themselves in a functional magnetic resonance (fMRI) machine, brain scans showed stimulating the clitoris, vagina and cervix lit up distinct areas of the women's sensory cortex, which means the brain registered distinct feelings between stimulating the clitoris, the cervix and the vaginal wall – where the G-spot is reported to be.{{cite book|last=Woodall|first=Camay|title=Exploring the Essentials of Healthy Personality: What is Normal?|volume=2|isbn=978-1440831959|publisher=ABC-CLIO|year=2014|pages=168–169|access-date=December 10, 2014|url=https://books.google.com/books?id=2RaDBAAAQBAJ&pg=PA168|archive-date=December 10, 2020|archive-url=https://web.archive.org/web/20201210124808/https://books.google.com/books?id=2RaDBAAAQBAJ&pg=PA168|url-status=live}}{{Cite journal|last1=Komisaruk |first1=B. R. |last2=Wise |first2=N. |last3=Frangos |first3=E. |last4=Liu |first4=W.-C. |last5=Allen |first5=K. |last6=Brody |first6=S. |title=Women's Clitoris, Vagina, and Cervix Mapped on the Sensory Cortex: fMRI Evidence |journal=The Journal of Sexual Medicine |year=2011|doi=10.1111/j.1743-6109.2011.02388.x |pmid=21797981 |pmc=3186818 |volume=8 |issue=10 |pages=2822–30}}

• {{cite news |author=Stephanie Pappas |date=August 5, 2011 |title=Surprise finding in response to nipple stimulation |work=CBS News |url= https://www.cbsnews.com/news/surprise-finding-in-response-to-nipple-stimulation/}} "I think that the bulk of the evidence shows that the G-spot is not a particular thing," stated Barry Komisaruk, head of the research findings. "It's not like saying, 'What is the thyroid gland?' The G-spot is more of a thing like New York City is a thing. It's a region, it's a convergence of many different structures".

In 2009, The Journal of Sexual Medicine held a debate for both sides of the G-spot issue, concluding that further evidence is needed to validate the existence of the G-spot. In 2012, scholars Kilchevsky, Vardi, Lowenstein and Gruenwald stated in the journal, "Reports in the public media would lead one to believe the G-spot is a well-characterized entity capable of providing extreme sexual stimulation, yet this is far from the truth". The authors cited that dozens of trials have attempted to confirm the existence of a G-spot using surveys, pathologic specimens, various imaging modalities, and biochemical markers, and concluded:

The surveys found that a majority of women believe a G-spot actually exists, although not all of the women who believed in it were able to locate it. Attempts to characterize vaginal innervation have shown some differences in nerve distribution across the vagina, although the findings have not proven to be universally reproducible. Furthermore, radiographic studies have been unable to demonstrate a unique entity, other than the clitoris, whose direct stimulation leads to vaginal orgasm. Objective measures have failed to provide strong and consistent evidence for the existence of an anatomical site that could be related to the famed G-spot. However, reliable reports and anecdotal testimonials of the existence of a highly sensitive area in the distal anterior vaginal wall raise the question of whether enough investigative modalities have been implemented in the search of the G-spot.

A 2014 review from Nature Reviews Urology reported that "no single structure consistent with a distinct G-spot has been identified".{{Cite journal|author1-link=Emmanuele A. Jannini|last1=Jannini |first1=EA |last2=Buisson |first2=O |last3=Rubio-Casillas |first3=A |title=Beyond the G-spot: clitourethrovaginal complex anatomy in female orgasm.|journal=Nature Reviews Urology|year=2014|doi=10.1038/nrurol.2014.193|pmid=25112854 |volume=11|issue=9 |pages=531–538|s2cid=13701675 }}

The release of fluids had been seen by medical practitioners as beneficial to health. Within this context, various methods were used over the centuries to release "female seed" (via vaginal lubrication or female ejaculation) as a treatment for suffocation ex semine retento (suffocation of the womb), female hysteria or green sickness. Methods included a midwife rubbing the walls of the vagina or insertion of the penis or penis-shaped objects into the vagina.{{cite book|last=Blackledge|first=Catherine|title=The Story of V: A Natural History of Female Sexuality|publisher=Rutgers University Press|date=2003|page=[https://archive.org/details/storyofv00cath/page/203 203]|isbn=978-0-8135-3455-8|url=https://archive.org/details/storyofv00cath|url-access=registration|quote=history of v.}} In the book History of V, {{ill|Catherine Blackledge|pl}} lists old terms for what she believes refer to the female prostate (the Skene's gland), including the little stream, the black pearl and palace of yin in China, the skin of the earthworm in Japan, and saspanda nadi in the India sex manual Ananga Ranga.Blackledge, p. 201

The 17th-century Dutch physician Regnier de Graaf described female ejaculation and referred to an erogenous zone in the vagina that he linked as homologous with the male prostate; this zone was later reported by the German gynecologist Ernst Gräfenberg.{{cite book | first1 = Jon E. | last1 = Roeckelein | title = Elsevier's Dictionary of Psychological Theories | publisher = Elsevier | year = 2006 | page = 256 | access-date = October 8, 2012 | isbn = 9780444517500 | url = https://books.google.com/books?id=1Yn6NZgxvssC&pg=PA256 | quote = The G-spot is not felt normally during a gynecological exam, because the area must be sexually stimulated in order for it to swell and be palpable; physicians, of course, do not sexually arouse their patients and, therefore, do not typically find the woman's G-spot. | archive-date = December 10, 2020 | archive-url = https://web.archive.org/web/20201210124622/https://books.google.com/books?id=1Yn6NZgxvssC&pg=PA256 | url-status = live }} Coinage of the term G-spot has been credited to Addiego et al. in 1981, named after Gräfenberg,{{cite journal |last1 =Addiego |first1=F |last2=Belzer |first2=EG |last3=Comolli |first3=J |last4=Moger |first4=W |last5=Perry |first5=JD |author-link5=Beverly Whipple |last6=Whipple |first6=B.]] |year =1981|title =Female ejaculation: a case study |journal =Journal of Sex Research |volume =17 |issue =1|pages =13–21 |doi =10.1080/00224498109551094}} and to Alice Kahn Ladas and Beverly Whipple et al. in 1982.{{cite book|author=William J. Taverner|author-link=William J. Taverner|title=Taking Sides: Clashing Views On Controversial Issues In Human Sexuality|publisher=McGraw-Hill Education|year=2005|access-date=January 24, 2014|pages=79–82|isbn=978-1429955225|url=https://books.google.com/books?id=CCpFAAAAYAAJ|archive-date=May 4, 2021|archive-url=https://web.archive.org/web/20210504060206/https://books.google.com/books?id=CCpFAAAAYAAJ|url-status=live}} Gräfenberg's 1940s research, however, was dedicated to urethral stimulation; Gräfenberg stated, "An erotic zone always could be demonstrated on the anterior wall of the vagina along the course of the urethra".{{cite journal |year=1950 |journal=International Journal of Sexology |volume=3 |issue=3 |pages=145–148 |title=The role of urethra in female orgasm |author=Ernest Gräfenberg |author-link=Ernst Gräfenberg |url=http://www.landman-psychology.com/284/sexuality/grafenberg-gspot.htm |access-date=2008-10-17 |archive-url=https://web.archive.org/web/20160303182900/http://www.landman-psychology.com/284/sexuality/grafenberg-gspot.htm |archive-date=2016-03-03 |url-status=dead }} The concept of the G-spot entered popular culture with the 1982 publication of The G Spot and Other Recent Discoveries About Human Sexuality by Ladas, Whipple and Perry, but it was criticized immediately by gynecologists:{{cite magazine |date = September 13, 1982 |title =In Search of the Perfect G |magazine =Time|url = http://www.time.com/time/magazine/article/0,9171,951842-1,00.html|archive-url = https://web.archive.org/web/20070524112201/http://www.time.com/time/magazine/article/0,9171,951842-1,00.html|url-status = dead|archive-date = May 24, 2007}} some of them denied its existence as the absence of arousal made it less likely to observe, and autopsy studies did not report it.

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