The idea that people are either "left-brained" (logical) or "right-brained" (creative) is a popular myth that simplifies how our brains actually work. While each side of the brain specializes in certain tasks—a concept known as —they work together as a single unit through a bridge of nerves called the corpus callosum . 1. Functional Differences at a Glance How a Traumatic Brain Injury Impacts Daily Life | MSKTC