What Is the Purpose of Convolutions in the Brain?
The convolutions of the brain increase the surface area, or cortex, and allow more capacity for the neurons that store and process information. Each convolution contains two folds called gyri and a groove between folds called a sulcus. Certain folds and grooves perform specific brain functions, according to Mayfield Clinic. About 70 percent of the brain's 100 billion nerve cells are located in the cerebral cortex.