Strange but true

Quote: Strange but True: When Half a Brain Is Better than a Whole One
You might not want to do it, but removing half of your brain will not significantly impact who you are

The operation known as hemispherectomy—where half the brain is removed—sounds too radical to ever consider, much less perform. In the last century, however, surgeons have performed it hundreds of times for disorders uncontrollable in any other way. Unbelievably, the surgery has no apparent effect on personality or memory.

Another study found that children that underwent hemispherectomies often improved academically once their seizures stopped. One was champion bowler of her class, one was chess champion of his state, and others are in college doing very nicely

http://www.scientificamerican.com/article.cfm?id=strange-but-true-when-half-brain-better-than-