Final answer:
Musicians generally have thicker frontal and parietal areas of the brain compared to nonmusicians, possibly due to intense musical training leading to structural brain changes.
Step-by-step explanation:
When comparing musicians to nonmusicians, research has found that musicians typically have thicker frontal and parietal areas. These brain regions are associated with processing of musical information, such as melodies and rhythms, as well as other cognitive functions like attention, working memory, and executive functions. The increased thickness might be due to the intense training and practice that musicians undergo, which may lead to structural changes in the brain. It has also been suggested that these structural differences could contribute to the enhanced auditory and motor skills found in musicians.