Researchers are learning more about neurological activity in humans with Necomimi ears, fuzzy animal-like ears that are worn on the head and read the tiny electrical signals that leave the brain when neurons are fired. As the Necomimi ears read the brainwave patterns, they react, much like the ears of a rabbit or a dog. Watch them in action! Plus, E.R. physician Dr. Travis Stork explains the different types of brain waves.