- Children (age <18) are being excluded from this study for several reasons. While autism is a pediatric neurodevelopmental disorder with symptom onset as young as one year of age, it is also one that is chronic throughout adulthood. Both children with autism and neurotypical children undergo periods of rapid change in brain size, structure, and organization as they age, and the interaction between a full rTMS series and brains that are still involved in periods of very active development and whom may also be at different points along their own developmental timelines may skew or alter the data that is collected. Additionally, due to both brain growth and increases in skull thickness, children of different ages may have significantly different "scalp to cortex" distances, which can result in very different patterns of cortical stimulation despite uniform coil positioning. This will be an added, unnecessary variable which would compromise the attempt at performing a standardized protocol. Finally, while high frequency rTMS is an FDA approved treatment for depression in adults, it has not yet been FDA approved in children and adolescents.