A dolphin slowly descended to the sea floor. It swam past brightly hued aquatic plants and animals.The dolphin’s goal was to collect as many gold coins as possible. The catalyst was Mary Lou Gould’s laser focus on a dolphin icon. With a BodyWave, an iPod-size EEG sensor strapped to her arm, Gould’s concentration, or lack of, was tracked on a laptop. “The first time I came in, I had no idea what it would be like,” Gould said. “It’s amazing. It almost seems like magic. Any of the games will not...