A neuroimaging study of adults treated for ADHD with psychostimulants reported that these individuals show increased surface complexity in their brains. They displayed higher gyrification in the right Rolandic operculum, left supplementary motor area, and several other regions compared to medication-naïve individuals with ADHD—not healthy controls, as was mistakenly stated. They also showed increased sulcal depth in the inferior and superior orbitofrontal regions.