PET and MRI show differences in cerebral asymmetry and functional connectivity between homo- and heterosexual subjects

• Published in: Proceedings of the National Academy of Sciences - PNAS Vol. 105; no. 27; pp. 9403 - 9408
• Main Authors: Savic, Ivanka, Lindström, Per
• Format: Journal Article
• Language: English
• Published: United States National Academy of Sciences 08.07.2008; National Acad Sciences
• Series: From the Cover
• Subjects: Adult; Amygdala; Amygdala - anatomy & histology; Amygdala - physiology; Behavioral neuroscience; Biological Sciences; blood flow; Cerebral hemispheres; cerebrum; Cerebrum - anatomy & histology; Cerebrum - physiology; Connectivity; Coordinate systems; cortex; Female; Functional Laterality; Gays & lesbians; gender differences; Hems; heterosexuality; Heterosexuality - physiology; Homosexuality; Homosexuality - physiology; Hormones; Humans; Magnetic Resonance Imaging; Male; Men; NMR; Nuclear magnetic resonance; pheromones; Positron-Emission Tomography; Sex linked differences; Sexual orientation; Studies; Tomography; women

Cerebral responses to putative pheromones and objects of sexual attraction were recently found to differ between homo- and heterosexual subjects. Although this observation may merely mirror perceptional differences, it raises the intriguing question as to whether certain sexually dimorphic features...