How The Brain Chooses Sides

http://www.sciencenews.org/view/generic/id/63826/title/How_the_brain_chooses_sides

This article is about how the brain chooses sides and knows what to do. Scientests still don't really know what to do and how the brain works and they are still going to be researching it for a long time. "A part of the brain called the left posterior parietal cortex plans button-pressing movements for both hands simultaneously".