Figure 1.

Schematic overlay of mental rehearsal of playing a violin concerto only with the left hand in professional violinists (bright gray) and amateur violinists (dark gray) on a segmented gray matter cortex. Professionals focus their activation patterns on the bilateral superior parietal cortex, p; bilateral premotor cortex, PMC; and to a lower magnitude on the supplementary motor area, SMA. Amateurs show widely distributed bilateral representation sites in the same areas but also the posterior parietal lobe and the lateral prefrontal cortex. Cerebellar and subcortical representation is not shown here. This schema is based on data from Lotze et al. (2003).