Figure 2

Interaction effect of hemisphere × standard probability in the two groups with corresponding standard error bars. The non-musicians are presented at the left panel and the musicians at the right panel. The MMN amplitude of the right hemisphere in the non-musicians is significantly larger in the 70% condition than in the 50% and 35% conditions, whilst the amplitude of the left hemisphere remains stable. In the non-musicians, the MMN amplitude of the right hemisphere is significantly larger than in the left hemisphere in the 70% condition. There are no significant differences between conditions in the group of musicians.