GENDER DIFFERENCES IN CEREBELLAR SIZE OF NEWBORNS

Abstract

The aim of this work was study of the gender features of bilateral asymmetry of cerebellum of children in the newborn period. For the research, we used information about the size of the parts of the cerebellum of 120 infants (60 boys and 60 girls), exactly: 1) the length and height of the cerebellar vermis; 2) length, height and width of the hemispheres of the cerebellum; 3) the width of the cerebellum. The research were conducted by the method of magnetic resonance imaging. The resulting digital material was processed by variation statistics in Microsoft Excel program. Differences were regarded as significant at p ≤ 0.05, that is, in cases when the differences exceed 95 %. Our statistical analysis revealed significant differences in the size of the cerebellum of newborn boys and girls,exactly: the length of the worm (26,0 ± 1,0 vs 19,2 ± 1,2 mm) in the height of the cerebellar vermis (19,0 ± 1,1 vs 16,5 ± 0,8 mm), the width of the cerebellum (54,1 ± 1,7 vs. 51.2 ± 3,1 mm) and the height of the hemispheres of the cerebellum (24,3 ± 0,8 vs. 20,2 ± 0,7 mm). There was also bilateral asymmetry of the hemispheres of the cerebellum in boys (the length of the right hemisphere of 34.2 ± 0.8, and the left of 24.8 ± 0,7 mm), which was not observed in girls. The study found that the average length of the right hemisphere of boys is larger than girls (34,2 ± 0.8 vs 28,4 ± 1,9 mm), but the length of the left hemisphere baby girls on average slightly higher than the rate among boys (28,2 ± 2,2 vs 24,8 ± 0,7 mm). In the course of the presented work was conducted to study gender features of bilateral asymmetry of the cerebellum of infant boys and girls. We founded that newborn boys have an asymmetry of the hemispheres of the cerebellum, while the girls it is absented, in addition, it was found that the average length of the left hemisphere of the cerebellum there are rather more girls than boys and the average size of the length and height of the worm, as well as the width and height of the hemispheres of the cerebellum of boys were more of those sizes in girls.