Variability of Human Cerebral Hemispheres Temporal Opercu

Abstract

The temporal operculum is a region of the temporal lobe upper surface, which is bounded at the front by transverse temporal gyri, and from behind – by the end of the lateral cerebral sulcus. Aim of study: to identify the shape and the dimensional features of the temporal operculum in people aged 1–21. Fixed brain preparations (n = 47) were used to measure the depth of the lateral sulcus at the level of the temporal operculum, and the temporal operculum length along its outer edge; the temporal operculum area was calculated as well. The studied material was divided into groups following age periodization: early childhood (n = 8); the first period of childhood (n = 18); the second period of childhood (n = 7); adolescence (n = 5), youthhood (n = 9). The study produced average values for the lateral sulcus depth, the temporal operculum length and area in people aged 1–21. The triangular shape of the temporal operculum has been found to be the most common. The temporal operculum area in early childhood and the first period of childhood, as well as the temporal operculum length in early childhood prevail in the left hemisphere (p <0.05). Viewed from the age aspect, the depth of the lateral sulcus varies less significantly than the length and the area of the temporal operculum. The temporal operculum area correlated more with the operculum length rather than with the depth of the lateral sulcus