Source: Hudziak JJ, Albaugh MD, Ducharme S, et al, for the Brain Development Cooperative Group. Cortical thickness maturation and duration of music training: health-promoting activities shape brain development. I nvestigators from multiple institutions reviewed data to ascertain whether playing a musical instrument is associated with changes in cerebral cortical thickness in children. Data for this study were collected as part of the National Institutes of Health Magnetic Resonance Imaging (MRI) Study of Normal Brain Development, in which a representative sample of typically developing US children undergo serial MRI scans and behavior testing to establish normative data on the relationship between brain maturation and behavior. 1 For the current study, data on youth 6-18 years old, on whom information regarding music training was available, were abstracted. Participants underwent MRI scanning on up to 3 separate visits at 2-year intervals. Regression analysis was used to assess the relationship between cortical thickness and number of years of playing a musical instrument. In a second analysis, the association between cortical thickness and an "age × years of playing" interaction term was evaluated. Potentially confounding variables were included in the models.Data were analyzed on 232 participants who underwent 334 MRI scans. There was no significant association between cortical thickness and number of years playing a musical instrument. However, there was a statistically significant association between the interaction term "age × years playing" with cortical thickness in a number of brain regions, including right premotor and primary motor cortices, left primary and supplementary motor cortices, left angular gyrus, and prefrontal and parietal cortices. These areas of the brain have been implicated in motor planning and coordination, visuospatial ability, and emotion and impulse regulation. 2 Music training was also associated with an increased rate of cortical thickness maturation. These results were independent of confounding variables, including IQ, gender, and handedness.The authors conclude that playing a musical instrument is associated with more rapid cortical thickness maturation within several areas of the brain, and emphasize the importance of incorporating musical training into education.