Bifurcated Brain

Cerebral lobes

One hundred billion neurons making trillions of connections probably isn’t something you want to mess with. The brain is so complex that it seems like the smallest defect could ruin it. But somehow, children with severe epilepsy are often able to develop into normal adults when half of their brains are surgically removed. Because it is already bifurcated down its center, surgeons remove the entire problem-lobe in a procedure called a hemispherectomy. Studies show no long-term effects on memory or personality, and minimal changes in cognition. In one case study, the patient completed college, attended grad school, and scored above average on IQ tests.

Bifurcated (pronounced BI-fər-kayt-əd)

Divided into two parts or branches.

Source

Wikipedia: Hemispherectomy, Image from here.