A difference in hypothalamic structure between heterosexual and homosexual men

Whether the observed sex-atypical characteristics are the result of processes that occur during the fetal or neonatal periods, as is the case with gender identity and sexual orientation, is an open question. Haynes and B. These last two steps envelop the psychological mechanisms transforming exotic into erotic.

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  • La conclusion faite est que l' attraction sexuelle fonctionne de façon similaire à un niveau biologique. Le premier groupe était composé de 19 hommes gays qui étaient morts de maladies liées au SIDA.
  • The volumes of four cell groups in this region [interstitial nuclei of the anterior hypothalamus INAH 1, 2, 3, and 4] were measured in postmortem tissue from three subject groups: women, men who were presumed to be heterosexual, and homosexual men.
  • 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. Pour tout cela, il y a un temps — celui de la conjecture, qui voit des intérêts publics se formuler — et un lieu — celui de la presse japonaise plus ou moins spécialisée.
  • A la difficulté du photographe à saisir le jeu sexuel des drosophiles fait en effet écho la difficulté, autrement plus contestataire, du directeur français à voir effectivement le phénotype homosexuel de satori. En , des chercheurs italiens ont mené une étude sur environ 4.
  • I will provide a short overview of the theory.
  • However, the experience-based theories have not done well in the empirical context Bem, and even in the biological literature, many contradictory claims are made and research often cannot be exactly replicated.
  • Most people are often confused as to the differences between these three categories, especially homosexuality and heterosexuality.
  • Reed, Nature , ; J. After this period, even extreme interventions, such as castration, have little effect on the size of the nucleus.

Gringas et Chen décrivent un certain nombre de mécanismes qui peuvent conduire à des différences entre jumeaux monozygotes, le plus pertinent ici étant la chorionicité et l'amniocité [ 10 ]. Cette hypothèse est une extension de la théorie de la sélection de parentèle.

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.

A difference in hypothalamic structure between heterosexual and homosexual men
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