Brain researchers say they can make people more innovative by passing an electrical current through the prefrontal cortex of their brain. The effects are short-lived, however. "My advice to people in creative fields is to be attuned to your state of mind. If you're more focused, work on those things that require focus. And vice versa," says Dr. Sharon Thompson-Schill, head of the Center for Cognitive Neuroscience at the University of Pennsylvania.