Dr. William Gaetz. has partnered with pediatric neurologist, Dr. Eric Marsh and neuropsychologist, Dr. Lisa Blaskey to better understand Epilepsy in children who have an Autism Spectrum Disorder (ASD). This study will use a non-invasive brain scanning technology as well as cognitive testing results to understand brain differences in children with Autism and Epilepsy. We hope that the information we get from this study will help children in the future who have ASD. For this research to be successful we need to work with male children with a diagnosis of ASD or ASD and Epilepsy who are 8 to 17 years of age. Families will be reimbursed for their time and have an opportunity to discus their child's cognitive testing results with our neuropsychologist post testing. Please contact our study staff at MEGstudies@email.chop.edu for more information.