[Study of right-left asymmetry of the temporal planum in the fetus].
Study on the asymmetry of the planum temporale by means of brain sections of 17 to 39 weeks old fetuses. There is a left predominance in 60 %, a right one in 25 % and symmetry in 15 % of the cases. Our results are similar to those published about adult brain, and cerebral dominance depends on it. Cerebral lateralisation is congenital and not acquired. There is also direct relation between the length of the lateral border of the planum temporale and its area. Such measure could be undertaken in living persons by means of radiological examination.
D002540:Cerebral Cortex / Q000033:anatomy & histology / Q000196:embryology*; D005260:Female; D007839:Functional Laterality; D006801:Humans; D011247:Pregnancy
Etude de l'asymetrie droite-gauche du planum temporale chez le foetus