title: Gender differences in the corpus callosum of neonates.
abstract: The gender difference of corpus callosum is a long standing controversy. Some investigators have reported that adult females have a more bulbous splenium and larger area relative to brain size, but others failed to replicate this. Few studies have reported on sexual dimorphism during development. Midsagittal ultrasonographs were obtained through the anterior fontanelle of healthy Korean neonates (100 males, 100 females) and were analyzed with NIH Image. The total area of corpus callosum and sub-regions of corpus callosum showed no gender differences. However, the male corpus callosum had significantly more height than that of the female whereas there was no difference in width of the corpus callosum. The estimated average thickness of corpus callosum was greater in the female splenium.
authors.affiliation: Department of Anatomy and Cell biology, College of Medicine, Ulsan University, Seoul, Korea.
authors.forename: Seung Jun
authors.initials: SJ
authors.lastname: Hwang
authors.forename: Eun-Kyung
authors.initials: EK
authors.lastname: Ji
authors.forename: Eun-Kyung
authors.initials: EK
authors.lastname: Lee
authors.forename: Yong Min
authors.initials: YM
authors.lastname: Kim
authors.forename: Da Young
authors.initials: DY
authors.lastname: Shin
authors.forename: Young Hyuck
authors.initials: YH
authors.lastname: Cheon
authors.forename: Im Joo
authors.initials: IJ
authors.lastname: Rhyu
mesh_terms: D003337:Corpus Callosum / Q000033:anatomy & histology* / Q000000981:diagnostic imaging / Q000502:physiology*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D012727:Sex Characteristics; D014463:Ultrasonography