Movement is much more complicated than you might think. Any one activity, whether it's opening your mouth to speak or running a marathon, involves complicated interactions in our brains. This complexity means that there’s still much about movement that scientists struggle to understand.
Recent research in Nature moves science a step forward. Researchers found the specific areas in the brain where the urge to act is activated and suppressed, illuminating the way that we move and the way that certain movement disorders come about.