Angular gyrus

The angular gyrus is one turn (from the Greek gyrus " turn " and Latin angularis " angle " ) of the cerebral cortex at the posterior end of the superior temporal sulcus. It corresponds to Brodmann 's area 39 meet here and anatomically parietal, temporal and occipital lobes.

Anatomical location

The gyrus angularis is attributed to the parietal lobe. The end face ( frontal) it is limited by the supramarginal gyrus ( Brodmann 's area 40), the superior temporal gyrus and the gyrus temporalis medius, posterior ( back) by the tertiary visual cortex ( Brodmann 's area 19) and towards the crown by the parietal lobule inferior.

Blood supply

The gyrus angularis is posterior of the artery gyri angularis and a terminal branch of the artery parietal, both branches of the middle cerebral artery supplied. The (rare ) isolated infarction of these blood vessels leads according to the so-called angularis syndrome. Also, bleeding, tumors, inflammation, injury and similar injuries can be the cause.

Function

The angular gyrus is one of the higher association areas of the cerebral cortex. He plays a crucial role in the networking of higher visual and auditory centers with higher sensory and motor areas. Thus, it is critically involved in functions such as reading, writing and arithmetic. But even higher human cognitive performance such as the ability to abstraction are attributed to him. A failure of the functions accordingly leads to the so-called angularis syndrome.