Written with the same clarity, directness, and humor that have made Simon LeVay one of the most popular lecturers at Harvard Medical School and at the University of California, San Diego, The Sexual Brain examines the biological roots of human sexual behavior. It puts forward the compelling case that the diversity of human sexual feelings and behavior can best be understood in terms of the development, structure, and function of the brain circuits that produce them. Discarding all preconceptions about the motivation and purpose of sexuality, LeVay discusses the scientific evidence bearing on such questions as why we are sexual animals, what the brain mechanisms are that produce sexual behavior, how these mechanisms differ between men and women and how these differences develop, and finally, what determines a person's sexual orientation: genes, prenatal events, family environment, or early sexual experiences? The Sexual Brain is broad in scope, covering evolutionary theory, molecular genetics, endocrinology, brain structure and function, cognitive psychology, and development. It is unified by LeVay's thesis that human sexual behavior, in all its diversity, is rooted in biological mechanisms that can be explored by laboratory science. The book does not shy away from the complexities of the field, but it can be readily appreciated and enjoyed by anyone with an intelligent interest in sex.
An evolutionary psychologist explains how present-day sexual and romantic behavior reflect two million years of hominid evolution.
Sexual orientation (homo- vs. heterosexuality) is one of many sex differences observed in humans. Sex differences can result from differential postnatal experiences (interaction with parents, environment) or from biological factors (hormones and genes) acting pre- or postnatally. The first option is often favored to explain sexual orientation although it is supported by little experimental evidence. In contrast, many sexually differentiated behaviors are organized during early life by an irreversible action of sex steroids. In particular, the preference for a male or female sex partner is largely determined in rodents by embryonic exposure to sex steroids. The early action of these steroids also seems to affect sexual orientation in humans. Indeed, clinical conditions associated with major endocrine changes during embryonic life often result in an increased incidence of homosexuality. Furthermore, multiple sexually differentiated behavioral, physiological, or even morphological traits that are known to be organized by prenatal steroids, at least in animals, are significantly different in homo- and heterosexual populations. Thus, prenatal endocrine (or genetic) factors seem to influence significantly human sexual orientation even if a large fraction of the variance remains unexplained to date. The possible interaction between biological factors acting prenatally and postnatal social influences remains to be investigated.
Hormones, Brain and Behavior, Third Edition offers a state-of-the-art overview of hormonally-mediated behaviors, including an extensive discussion of the effects of hormones on insects, fish, amphibians, birds, rodents, and humans. Entries have been carefully designed to provide a valuable source of information for students and researchers in neuroendocrinology and those working in related areas, such as biology, psychology, psychiatry, and neurology. This third edition has been substantially restructured to include both foundational information and recent developments in the field. Continuing the emphasis on interdisciplinary research and practical applications, the book includes articles aligned in five main subject sections, with new chapters included on genetic and genomic techniques and clinical investigations. This reference provides unique treatment of all major vertebrate and invertebrate model systems with excellent opportunities for relating behavior to molecular genetics. The topics cover an unusual breadth (from molecules to ecophysiology), ranging from basic science to clinical research, making this reference of interest to a broad range of scientists in a variety of fields. Comprehensive and updated coverage of a rapidly growing field of research Unique treatment of all major vertebrate and invertebrate model systems with excellent opportunities for relating behavior to molecular genetics Covers an unusual breadth of topics and subject fields, ranging from molecules to ecophysiology, and from basic science to clinical research Ideal resource for interdisciplinary learning and understanding in the fields of hormones and behavior
Ambition, genius, thought, imagination, love, hate, greed and, above all, consciousness ourselves as alive and as part of our world OCo all this is somehow enabled by the brain. The brain is the person, and if it goes wrong, a person is ruined. This book is about part of what the brain does OCo a role of which many of us are hardly aware, but one that has ensured, the survival of mankind. Despite famine, drought, wars, cold, infections and hostile environments, we survive as a species OCo though not always as individuals. All this time, our brains have been coping with what fate throws at us OCo a process that some call adaptation. How does the brain do it? How does it know whatOCOs needed? How does it enable us to provide that need? How much do we depend on our own brains, or on those of others?. This book is different from other books on the brain. It deals with the brainOCOs role in survival, rather than OC higherOCO cognitive functions (such as language or thought). It describes the special part of the brain that keeps you alive: that makes you feel hungry when you need energy, makes you feel thirsty when you need water, drives you to reproduce so that your species survives, makes you fearful of things or individuals that might harm you, and defends you against adversity."
Ambition, genius, thought, imagination, love, hate, greed and, above all, consciousness ourselves as alive and as part of our world — all this is somehow enabled by the brain. The brain is the person, and if it goes wrong, a person is ruined. This book is about part of what the brain does — a role of which many of us are hardly aware, but one that has ensured, the survival of mankind. Despite famine, drought, wars, cold, infections and hostile environments, we survive as a species — though not always as individuals. All this time, our brains have been coping with what fate throws at us — a process that some call adaptation. How does the brain do it? How does it know what's needed? How does it enable us to provide that need? How much do we depend on our own brains, or on those of others? This book is different from other books on the brain. It deals with the brain's role in survival, rather than “higher” cognitive functions (such as language or thought). It describes the special part of the brain that keeps you alive: that makes you feel hungry when you need energy, makes you feel thirsty when you need water, drives you to reproduce so that your species survives, makes you fearful of things or individuals that might harm you, and defends you against adversity.Contents: The Brain as a Survival MachineA Chemical Code for SurvivalSerotonin, Steroids and SignallingThe Brain and StressThe Weight-Watcher in the BrainStaying Wet and SaltyKeeping Warm, Staying CoolThe Sexual BrainBonding, Motherhood and LoveThe Brain Goes to WarThe Rhythm of LifeThe Brain Breaks DownIndividuality Readership: A general level book that will interest both non-scientists and scientists from other fields.
Sex Differences in the Brain
During the last years human sexuality has been the focus of interest and study by various disciplines. In this volume a multidisciplinary team of international experts discuss contemporary issues of human sexuality from updates on diagnosis to the management of various sexual dysfunctions. Reviews of the management of several female sexual dysfunctions, the impact of cancer on sexual functioning, the impact of trauma on sexual desire and function as well as the newest trends in sex therapy; androgen deprivation treatment of sexual behavior and autogynephilia are discussed in detail. Further, the complex interplay between the field of human sexuality and the Internet, psychological and cultural aspects of infertility are reviewed. A large amount of clinical material on topics rarely covered in other volumes will prove invaluable reading to clinicians from various disciplines such as psychiatry, psychology, urology, gynecology, sexology and sex therapy.
“Mark has eloquently unraveled the mystery behind addictive behavior: when our relationships are not alive and growing, the temptation for various kinds of addictions is unleashed..”—Dr. Gary Smalley With today’s rampant availability of Internet pornography, sexual addiction has become a national epidemic that affects up to 10 percent of Christians. As devastating as any drug habit, it brings heartbreak and despair to those it entangles. But there is help for men and women caught in sexual addiction’s downward spiral. This book offers a path that leads beyond compulsive thoughts and behaviors to healing and transformation. Sensitive to the shame of sexual addiction without minimizing its sinfulness, Dr. Mark Laaser traces the roots of the problem, discusses its patterns and impact, and maps out a biblical approach to self-control and sexual integrity. Previously titled Faithful and True, this revision includes an all-new section that deals with sexual addiction in the church. Other important changes reflect cultural trends, incorporate current research, and place a greater emphasis on spiritual growth. This book also addresses the unique needs and issues of female sex addicts. Whether you know someone with a sexual addiction or struggle yourself, Healing the Wounds of Sexual Addiction points the way to understanding, wholeness, and holiness.
Sexual difference in the brain has long been one of the more intriguing research areas in the field of neuroscience. This thorough and comprehensive text uncovers and explains recent neurobiological and molecular biological studies in the field of neuroscience as they relate to the mechanisms underlying sexual differentiation of the brain. Attempts have been made to clarify sex differences in the human brain using noninvasive techniques such as magnetic resonance imaging. Sexual Differentiation of the Brain thoroughly examines these techniques and findings, providing an up-to-date, comprehensive overview written by leading researchers in the field. Just a few of the topics addressed include genetic contributions to the sexual differentiation of behavior; in-vitro studies of the effects of estrogen on estrogen receptor-transfected neuroblastoma cells; and the evolution of brain mechanisms controlling sexual behavior. Other topics include sexual differentiation of neural circuitry in the hypothalamus; structural sex differences in the mammalian brain; and sexual differentiation of cognitive functions in humans. With its revealing and informative chapters, as well as provocative treatment of the subject matter, Sexual Differentiation of the Brain helps shed new light on one of the most fascinating areas of brain research.