Cerebral Asymmetry
The size of the brain’s hemispheres is a sexually dimorphic trait in which men tend to show asymmetry in the volumes of their hemispheres while women show volumetric symmetry. A recent volumetric MRI study indicated that homosexuals showed sex-atypical symmetry: homosexual men showed hemispheric volumes to be symmetric similar to heterosexual women and homosexual women showed asymmetry in hemispheric volumes as heterosexual men do. These findings demonstrate a global neurological difference in brain structures showing sex-atypical characteristics associated with sexual orientation.
Read more about this topic: Neuroscience And Sexual Orientation, Structural Differences