Figure 1. Stimulus material.

(a) Tone sequences for the standard and the deviant stimuli that were used in the MEG measurements before and after training. (b) Musical score of the training piano melody. The first line is repeated after the end of the second line. The measure at the end of the first line concludes the melody. (c) Visual templates for the SA training. Numbers represent the fingers (thumb, 1; index finger, 2 and so on) with which the subjects were supposed to press the corresponding piano keys. The rectangles indicate that the left hand is used, the circles mark the right hand. The numbers that were depicted in one horizontal line had to be played simultaneously. The small circles indicated that notes had to be played at double speed.