Simon LeVay | |
---|---|
Born | Oxford, England | 28 August 1943
Nationality | British |
Citizenship | English, American |
Alma mater | University of Cambridge (B.A.) University of Göttingen (PhD) |
Scientific career | |
Fields | Neuroscience, Neurobiology, Human Sexuality |
Institutions | Harvard Medical School Salk Institute University of California, San Diego Stanford University |
Website | www |
Simon LeVay (born 28 August 1943 in Oxford, England) is a British-American neuroscientist.
He received a bachelor's degree in natural sciences from the University of Cambridge in 1966, a Ph.D. in Neuroanatomy at the University of Göttingen in Germany, and completed his postdoctoral fellowship at Harvard Medical School in 1974.
LeVay held positions in neurobiology at the Harvard Medical School from 1974 to 1984. He then worked at the Salk Institute for Biological Studies from 1984 to 1993 while holding an Associate Professorship in Biology at the University of California, San Diego. Much of his early work focused on the visual cortex in animals.
While working at the Salk Institute for Biological Studies, LeVay published an article in Science that compared the size of the "Interstitial Nucleus of the Anterior Hypothalamus" (INAH3) in a group of gay men to a group of straight men and women. This was the first scientific study ever published that showed brain differences based on sexual orientation. The study results were featured on PBS, Newsweek , Nightline , Donahue , and The Oprah Winfrey Show .
In 1992, he took a leave of absence from Salk to help form the Institute of Gay and Lesbian Education (IGLE) in West Hollywood with Chris Patrouch and Lauren Jardine. He never returned.
LeVay has spoken extensively on the topic of human sexuality at a number of venues and published a number of books. In 2003 he became a lecturer in Human Sexuality Studies at Stanford University.
Simon LeVay was born on 28 August 1943 in Oxford, England. [1] [2] LeVay spent most of his childhood in West Dulwich where he attended Dulwich Preparatory School. LeVay went on to attend Dulwich College where he specialized in Latin, Greek, and Ancient History while excelling in cycling. It was at Dulwich College where LeVay also admitted to himself that he was gay. [3] [4] [5]
Before moving on to higher education, LeVay spent a gap year in Göttingen Germany where he worked as a technician in an electron microscope lab, learned German, and published a scientific article on the spinal cord of chickens. [6] [4] When the gap year was complete, LeVay returned to England, where he was admitted into Cambridge University. [3] [4] [1] After graduating with a B.A. in natural sciences, he continued the clinical portion of his medical education at the University College Hospital in London before dropping out of medical school altogether. [5] [3]
LeVay returned to the lab in Göttingen and enrolled in graduate school, where he published his doctoral thesis on the visual system before graduating with a Ph.D. in neuroanatomy in 1971. [7] [1] At the University of Göttingen, LeVay met an American exchange student from the University of California, Berkeley named Richard Hersey and fell in love. [3] [4] When Hersey left Germany and returned to the United States, LeVay followed him and began looking at postdoctoral positions in Boston, New York, and Wisconsin. He eventually got a job at Harvard Medical School working in the lab of David Hubel and Torsten Wiesel. [3] [8] [9] LeVay and Hersey spent a year traveling in the United States before Hersey returned to Berkeley, and LeVay started his life in Boston. [4] [10]
LeVay completed his postdoc at Harvard Medical School and began teaching in the Neurobiology Department. [1] [7] [10]
In 1984, LeVay accepted a job at the Salk Institute in San Diego, California where he studied the brain's role in vision. [5] [9] [11] He also began working as an Associate Professor in Biology at the University of California. [12]
LeVay took a leave of absence to take care of Hersey, who had contracted AIDS. [13] [14] After Hersey died of the disease in 1990, [5] LeVay returned to Salk with little interest in continuing his work on the visual centers of the brain. [3] [15] [16] [17] "Richard and I had spent 21 years together," LeVay said during an interview with a reporter from Discover magazine. "It was while looking after him that I decided I wanted to do something different with my life ... I had an emotional need to do something more personal, something connected with my gay identity." [3]
In 1991, LeVay published an article in Science that compared a structure in the hypothalamus called INAH3 in the brains of male homosexuals to that found in a group of heterosexual men and heterosexual women. He found that this region of the brain in gay men was similar to that found in straight women. [18] [3]
In 1992, LeVay took a second leave of absence from Salk to help form the Institute of Gay and Lesbian Education (IGLE) in West Hollywood with Chris Patrouch and Lauren Jardine. He never returned. [5] [3] After IGLE folded, LeVay would go on to speak on the topic of human sexuality at a number of venues and published books. [4]
In 2003 he became a lecturer in Human Sexuality Studies at Stanford University. [19] [12]
Researchers had been comparing the brains of men and women since the 1980s, but the article that caught LeVay's attention was published by a group at UCLA. [3] In the study, the researchers compared the hypothalami of 11 men to 11 women. Of particular interest to LeVay was an area the researchers called the "Interstitial Nucleus of the Anterior Hypothalamus" (INAH3), [20] [3] [16] a part of the brain that had been found to help regulate sexual behavior. [21] The UCLA team found that INAH3 was, on average, twice as large in men as it was in women. [20] This made LeVay wonder if he would see differences in this grouping of cells based on sexual orientation as well. [3] [16]
"I was already working on structure and function in one part of the brain, so working on the sexual part of the brain wasn't a big switch." [3]
Over a period of nine months, LeVay performed surgery on the brains of 41 cadavers: 18 gay men (plus 1 bisexual male), 16 straight men, and 6 straight women. To ensure that the process was fully blinded, he'd had each brain numerically encoded to conceal the sexual orientations of each donor. [18] [16] [3]
In 1991, LeVay published "A difference in hypothalamic structure between heterosexual and homosexual men" in Science . On average, LeVay found that the INAH3 in the brains of heterosexual men were more than twice as large as those found in the brains of homosexuals. In fact, the INAH3 size of the homosexual group was the same as that of the women. LeVay wrote that "[t]his finding indicates that INAH is dimorphic with sexual orientation, at least in men, and suggests that sexual orientation has a biological substrate." [18]
This was the first scientific study that looked specifically at differences between brains on the basis of sexual orientation. [22] [11] Because of this, LeVay's finding attracted a lot of media attention. The study results were featured on PBS, Newsweek, Nightline, Donahue, and The Oprah Winfrey Show. [11] [3] [5]
The results received pushback from some religious groups as well as from members of the LGBT community. [11] [3] [5] There were also several criticisms from scientists:
LeVay himself cautioned against misinterpreting his findings: "I did not prove that homosexuality is genetic, or find a genetic cause for being gay. I didn't show that gay men are born that way, the most common mistake people make in interpreting my work. Nor did I locate a gay center in the brain." [3]
In an interview with Newsweek in 1992, he said, "What I reported was a difference in the brain structure of the hypothalamus. We can't say on the basis of that what makes people gay or straight. But it opens the door to find the answer to that question." [16]
After Governor Pete Wilson vetoed California Bill AB101 which would have extended civil rights protections to the LGBT community, [26] LeVay became active in the community. While attending a gay political group, he met a planner in West Hollywood by the name of Chris Patrouch. In their conversations Patrouch pitched the idea of creating a new educational institution in West Hollywood that would be gay friendly. LeVay liked the idea so much that he took a leave of absence from Salk in 1992 to help. [5] [16]
They were planning to call the institution the "Harvey Milk University" after the first openly gay elected supervisor of San Francisco that had been assassinated by Dan White in 1987. [27] However, they eventually formed the West Hollywood Institute of Gay and Lesbian Education (IGLE) with Lauren Jardine. The West Hollywood City Counsel unanimously passed a resolution giving IGLE free space in a building owned by the city and IGLE began offering classes in 1992. [28]
IGLE did not meet enrollment expectations that first year. Boxall reports that 14 of 22 classes that had been listed in the course catalog had been canceled due to lack of enrollment. [29] Two years later IGLE's administrators were still struggling with whether the school was going to concentrate on teaching classes focused on gay and lesbian studies, or whether it was going to focus on teaching conventional subjects to LGBT students. [5]
Patrouch and LeVay had been hoping to get their courses accredited and start offering degrees, [28] [29] [5] but the situation proved untenable and IGLE shut down in 1996. [30] [4]
The Sexual Brain, published in 1993, was LeVay's first book. It discussed brain mechanisms involved in sexual behavior and feelings. [31]
Queer Science: The Use and Abuse of Research into Homosexuality, published in 1996, was a survey of sexual orientation research. It discussed the work of pioneering sexologists such as Karl Heinrich Ulrichs and Magnus Hirschfeld, Sigmund Freud and his followers, behaviorism, and LeVay's own research on INAH3 and its possible implications. [32]
Albrick's Gold, published in 1997, was a science fiction novel, whose main character, Roger Cavendish, is partially based on Simon LeVay. [33]
Gay, Straight, and the Reason Why: The Science of Sexual Orientation, first published in 2010, details findings from over 650 studies on sexual orientation, including findings he had not considered: "I didn't expect the avenue of research about birth order, that gay men tend to be late born in families, and that women aren't as fixed in their sexual orientation as are men." [19] A second edition was released in 2016. In 2010, Gay, Straight, and the Reason Why won the Bonnie and Vern L. Bullough Award which is given by the Foundation for the Scientific Study of Sexuality to the most distinguished book written for the professional sexological community. [1] [34]
LeVay has also co-authored a textbook on human sexuality and books on earthquakes, volcanoes, Parkinson's disease, and extraterrestrial life. Human Sexuality (now in its third edition) was described in one review as "an exceptional book that addresses nearly every aspect of sexuality from multiple theoretical, historical, and cultural perspectives." [35]
Heterosexuality is romantic attraction, sexual attraction or sexual behavior between people of the opposite sex or gender. As a sexual orientation, heterosexuality is "an enduring pattern of emotional, romantic, and/or sexual attractions" to people of the opposite sex. It "also refers to a person's sense of identity based on those attractions, related behaviors, and membership in a community of others who share those attractions." Someone who is heterosexual is commonly referred to as straight.
Sexual orientation is an enduring personal pattern of romantic attraction or sexual attraction to persons of the opposite sex or gender, the same sex or gender, or to both sexes or more than one gender. Patterns are generally categorized under heterosexuality, homosexuality, and bisexuality, while asexuality is sometimes identified as the fourth category.
The relationship between biology and sexual orientation is a subject of on-going research. While scientists do not know the exact cause of sexual orientation, they theorize that it is caused by a complex interplay of genetic, hormonal, and environmental influences. However, evidence is weak for hypotheses that the post-natal social environment impacts sexual orientation, especially for males.
The Kinsey scale, also called the Heterosexual–Homosexual Rating Scale, is used in research to describe a person's sexual orientation based on one's experience or response at a given time. The scale typically ranges from 0, meaning exclusively heterosexual, to a 6, meaning exclusively homosexual. In both the male and female volumes of the Kinsey Reports, an additional grade, listed as "X", indicated "no socio-sexual contacts or reactions" (asexuality). The reports were first published in Sexual Behavior in the Human Male (1948) by Alfred Kinsey, Wardell Pomeroy, and others, and were also prominent in the complementary work Sexual Behavior in the Human Female (1953).
The field of psychology has extensively studied homosexuality as a human sexual orientation. The American Psychiatric Association listed homosexuality in the DSM-I in 1952 as a "sociopathic personality disturbance," but that classification came under scrutiny in research funded by the National Institute of Mental Health. That research and subsequent studies consistently failed to produce any empirical or scientific basis for regarding homosexuality as anything other than a natural and normal sexual orientation that is a healthy and positive expression of human sexuality. As a result of this scientific research, the American Psychiatric Association removed homosexuality from the DSM-II in 1973. Upon a thorough review of the scientific data, the American Psychological Association followed in 1975 and also called on all mental health professionals to take the lead in "removing the stigma of mental illness that has long been associated" with homosexuality. In 1993, the National Association of Social Workers adopted the same position as the American Psychiatric Association and the American Psychological Association, in recognition of scientific evidence. The World Health Organization, which listed homosexuality in the ICD-9 in 1977, removed homosexuality from the ICD-10 which was endorsed by the 43rd World Health Assembly on 17 May 1990.
Obtaining precise numbers on the demographics of sexual orientation is difficult for a variety of reasons, including the nature of the research questions. Most of the studies on sexual orientation rely on self-reported data, which may pose challenges to researchers because of the subject matter's sensitivity. The studies tend to pose two sets of questions. One set examines self-report data of same-sex sexual experiences and attractions, while the other set examines self-report data of personal identification as homosexual or bisexual. Overall, fewer research subjects identify as homosexual or bisexual than report having had sexual experiences or attraction to a person of the same sex. Survey type, questions and survey setting may affect the respondents' answers.
Androphilia and gynephilia are terms used in behavioral science to describe sexual orientation, as an alternative to a gender binary homosexual and heterosexual conceptualization. Androphilia describes sexual attraction to men and/or masculinity; gynephilia describes the sexual attraction to women and/or femininity. Ambiphilia describes the combination of both androphilia and gynephilia in a given individual, or bisexuality.
INAH-3 is the short form for the third interstitial nucleus of the anterior hypothalamus, and is the sexually dimorphic nucleus of humans. INAH-3 is significantly larger in males than in females regardless of age. One study has shown that INAH-3 is larger in heterosexual males than in homosexual males and heterosexual females, although this data has not been successfully reproduced.
Homosexuality is sexual attraction, romantic attraction, or sexual behavior between members of the same sex or gender. As a sexual orientation, homosexuality is "an enduring pattern of emotional, romantic, and/or sexual attractions" exclusively to people of the same sex or gender. It "also refers to a person's sense of identity based on those attractions, related behaviors, and membership in a community of others who share those attractions."
A relationship between handedness and sexual orientation has been suggested by a number of researchers, who report that heterosexual individuals are somewhat more likely to be right-handed than are homosexual individuals.
Gay Science: The Ethics of Sexual Orientation Research is a 1997 book by the philosopher Timothy F. Murphy about scientific research on sexual orientation.
The relationship between the environment and sexual orientation is a subject of research. In the study of sexual orientation, some researchers distinguish environmental influences from hormonal influences, while other researchers include biological influences such as prenatal hormones as part of environmental influences.
Sexual orientation is an enduring pattern of romantic or sexual attraction to persons of the opposite sex or gender, the same sex or gender, or to both sexes or more than one gender, or none of the aforementioned at all. The ultimate causes and mechanisms of sexual orientation development in humans remain unclear and many theories are speculative and controversial. However, advances in neuroscience explain and illustrate characteristics linked to sexual orientation. Studies have explored structural neural-correlates, functional and/or cognitive relationships, and developmental theories relating to sexual orientation in humans.
Bisexuality is a romantic or sexual attraction or behavior toward both males and females, to more than one gender, or to both people of the same gender and different genders. It may also be defined to include romantic or sexual attraction to people regardless of their sex or gender identity, which is also known as pansexuality.
Sigmund Freud, the founder of psychoanalysis, viewed homosexuality, like all forms of sexuality, as being caused by a combination of biological, social and psychological factors. According to Freud, humans are born with unfocused sexual libidinal drives; he regarded homosexuality as a particular form of variation in the developmental process of the sexual function.
The hormonal theory of sexuality holds that, just as exposure to certain hormones plays a role in fetal sex differentiation, such exposure also influences the sexual orientation that emerges later in the individual. Prenatal hormones may be seen as the primary determinant of adult sexual orientation, or a co-factor.
Gay, Straight, and the Reason Why: The Science of Sexual Orientation is a book by the neuroscientist Simon LeVay and published by Oxford University Press. The book received mainly positive reviews, praising it for LeVay's wide-ranging overview of scientific research on sexual orientation. In 2012, it received the Bullough Book Award for the most distinguished book written for the professional sexological community published in a given year.
The Sexual Brain is a 1993 book about brain mechanisms involved in sexual behavior and feelings, and related topics such as sexual orientation, by the neuroscientist Simon LeVay. The book was praised as a well-written work on science. However, some reviewers pointed out factual errors, and stated that LeVay failed to prove that homosexuality has a biological basis.
Homosexuality was classified as a mental disorder in the Diagnostic and Statistical Manual of Mental Disorders (DSM) beginning with the first edition, published in 1952 by the American Psychiatric Association (APA). This classification was challenged by gay rights activists during the gay liberation following the 1969 Stonewall riots, and in December 1973, the APA board of trustees voted to declassify homosexuality as a mental disorder. In 1974, the DSM was updated and homosexuality was replaced with a new diagnostic code for individuals distressed by their homosexuality, termed ego-dystonic sexual orientation. Distress over one's sexual orientation remained in the manual, under different names, until the DSM-5 in 2013.
Ivanka Savic Berglund is a Serbian-Swedish neuroscientist, a professor of neurology and chief physician at the Karolinska Institute in Sweden, and an adjunct professor in the neurology department at the University of California, Los Angeles (UCLA). Savic is best known for her neurophysiology and neuroimaging research relating to epilepsy, sex differences, sexual orientation, gender identity, brain processing of odors and pheromones, and the effects of chronic stress on the brain. Savic is a co-founder of the Stockholm Brain Institute and the editor of several medical books.