Gyrus Diagonal

The diagonal gyrus (lat. gyrus diagonalis; synonym: Broca's diagonal ligament) is a gyrus on the lateral surface of the cerebral hemispheres. Located in the frontal lobe, between the superior and middle frontal gyri. The name is due to its diagonal location relative to the other convolutions of the frontal lobe.

The diagonal gyrus belongs to the associative zones of the cerebral cortex. It is associated with speech and cognitive functions. Damage to this area can lead to speech and thinking problems.

The structural and functional development of the diagonal gyrus (UD) almost completely coincides with its histological maturation and occurs in children 3-6 years old more intensively in the occipital lobes, and in children 7-12 years old - in the parietal lobe of the cerebral cortex. The development of the temporal lobes in children begins in the early stages of intrauterine development, advancing the maturation of the parietal lobes by 25%. The development of the frontal lobes occurs in parallel (semantic and prefrontal). The development of UD is completed by the age of 5-7 years of a child’s life, which allows him to operate with spatial representations relatively freely