The brain can be differentiated in several different styles. Male body with female-differentiated brain (e.g., excess estrogen in male embryo during gestation); male body with male-differentiated brain (e.g., excess androgen in female embryo during gestation); “super” male (e.g., excess androgen in male embryo). See Turner’s Syndrome for female equivalent. (Howard, Pierce J., PhD. The Owner’s Manual for the Brain. p 215-221. GA:Bard Press, 1994, 2000.)

Two centers can be influenced by male hormones. The mating center in the hypothalamus determines sexual attraction, the behavior center determines masculine or feminine behaviors (e.g., not all gay males are effeminate, not all macho males are heterosexual). (Pease, Barbara and Allan. Why Men Don’t Listen and Women Can’t Read Maps. p 183-186. NY:Broadway Books, 1998.)

The fetal brain grows at different rates. Different areas of the brain become susceptible at different times to sex hormones (e.g., testosterone). One portion can be masculinized while another remains untouched. (Fisher, Helen, PhD. The First Sex. p xviii-xix. NY: Random House, 1999.)

The brain can be differentiated in several different styles. Male body with female-differentiated brain (e.g., excess estrogen in male embryo during gestation); male body with male-differentiated brain (e.g., excess androgen in female embryo during gestation); “super” male (e.g., excess androgen in male embryo). See Turner’s Syndrome for female equivalent. (Howard, Pierce J., PhD. The Owner’s Manual for the Brain. p 215-221. GA: Bard Press, 1994, 2000.)

Brain injuries (e.g., birth injury, infantile meningitis, bumping one’s head at age 4) can trigger sexual anomalies (e.g., transvestitism, loss of libido). These physical effects on the brain are not attributable to societal/familial issues, per se. (Wilson, Glenn. The Great Sex Divide. p 32-34. England: Peter Owen Publishers, 1989.)

The brain areas of males and females related to sex differ. Genes create the basic template, primarily during gestation, that is acted upon by hormones. (Carter, Rita, Ed. Mapping the Mind. p 73. CA:University of California Press, 1998.)

The entire human brain is involved with sex, including nearly every type of brain activity. (Carter, Rita. Ed. Mapping the Mind. p 74. CA:University of California Press, 1998.)

East German scientist, Dr. Gunter Dorner, described three centers of development in the hypothalamus: sex center, mating center, and gender-role center. Dr. Dorner thinks that homosexuality might be able to be prevented with pre-natal injections of androgens. (Moir, Anne, and David Jessel. Brain Sex. p 114-116. NY:Carol Publishing Group, 1989, 1991.)

American scientist Dr. Milton Diamond described four stages of brain development in the hypothalamus: basic sexual, sexual identity, sexual choice, and sexual control centers. (Moir, Anne, and David Jessel. Brain Sex. p 114-116. NY:Carol Publishing Group, 1989, 1991.)

Individuals who are connected to an inner core of faith and hope show positive effects on brain power similar to those of people who meditate. Spirituality “is definitely useful in boosting brain efficiency.” (Guiffre, Kenneth, MD, with Theresa Foy DeGeronimo. The Care and Feeding of Your Brain. p 45, 236. NJ:Career Press, 1999.)