Brains of individuals with ADHD have hyper-connected neural networks that tend to be co-active when they would normally be inactive.

“what appears to be the case based on a lot of high quality neuroimaging data is that the brains of children and adults with ADHD have all of these networks functioning but those networks are actually hyper connected that is they tend to be co-active at times when ordinarily meaning kids and adults without ADHD they would not be co-active”