A lack of dimorphism of sex or sexual orientation in the human anterior commissure.
Four studies have examined the cross-sectional area of the anterior commissure (AC) for variation with sex, with conflicting results. One also reported the AC to be larger in homosexual as opposed to heterosexual men. We examined the cross-sectional area of the AC in postmortem material from 120 individuals, and found no variation in the size of the AC with age, HIV status, sex, or sexual orientation.
Lasco
Mitchell S
MS
Department of Applied Psychology, New York University, 239 Greene Street, New York, NY 10003, USA. byne@mindspring.com
Jordan
Theresa J
TJ
Edgar
Mark A
MA
Petito
Carol K
CK
Byne
William
W
D000328:Adult; D000367:Age Factors; D000886:Anthropometry; D005260:Female; D015658:HIV Infections / Q000473:pathology* / Q000503:physiopathology; D006716:Homosexuality / Q000235:genetics; D006801:Humans; D007031:Hypothalamus / Q000033:anatomy & histology* / Q000254:growth & development / Q000502:physiology; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D009413:Nerve Fibers, Myelinated / Q000502:physiology / Q000648:ultrastructure*; D009434:Neural Pathways / Q000166:cytology* / Q000254:growth & development / Q000502:physiology; D012727:Sex Characteristics; D012733:Sex Differentiation / Q000502:physiology*; D012725:Sexual Behavior / Q000502:physiology*; D013223:Statistics as Topic