What Is a Grove in the Cortex Called

In neuroanatomy, a sulcus (Latin: “furrow”, pl. sulci) is a depression or groove in the cerebral cortex. It surrounds a gyrus (pl. gyri), creating the characteristic folded appearance of the brain in humans and other mammals. The larger sulci are usually called fissures.

What is a groove in the brain called?

The cerebral cortex has sulci (small grooves), fissures (larger grooves) and bulges between the grooves called gyri.

What are the valleys in the cerebral cortex called?

The surface of the cerebral cortex is extensively folded, forming ridges called gyri and valleys called sulci. The folding allows for the surface area of the cerebral cortex to be increased significantly, making room for more neurons.