PSB-2000 Lecture Notes - Anterior Commissure, Turner Syndrome, Transsexual
Document Summary
Differences between gay and straight individuals: brain anatomy. 2x as large in straight men than women. Change that occurs during development or in adolescence or adult hood. When looking at rams, they have sexually dimorphic. Associated with size of thalamus and sexual behavior. Volume of hypothalamus much larger in straight men than in gay men and women (levay 1991) Differences in how the brain responds to pheromones. Released from one member of the species and other members of that species can respond to that in different ways. Humans don"t have the necessary stuff but still react to pheromones. And heterosexual women and homosexual men respond in the same way. Ent (more common in female) heterosexual men and lesbians respond similarly. Strong correlations between all of this and sexual orientation and seem to be set up organizationally before birth. Gender identity is what gender you identify yourself as. Usually gender identity and sex correlate but sometimes they don"t.
