retraining the brain. >> many parents struggle with the treatment for their kids. this new research is suggesting the power may lie within their own minds. this may look like just another video game, but it might be the answer to curing adhd for 13-year-old devin. 6 million kids in the u.s. are like devin, diagnosed at the age of 7 with adhd, or attention deficit hyperactivity disorder. struggling to concentrate throughout the day. >> definitely really hard to stay focused. >> reporter: but now researchers at ohio state's wexner medical center conducting a study by using video therapy to teach children how to control their symptoms just by using their mind. >> just try to relax. >> we attach sensors to the scalp. it picks up the natural electricity in the braun. we train them to speed their brain waves. >> reporter: devin must concentrate to keep the