Figure 4.

Comparing P2 amplitudes from the averages of the first and second-half epochs to the G# (out of key in C major context, but in key in C# major context). Baseline-to-P2 amplitudes for Cz from the averages of the first and the second half epochs (left and right panels, respectively). A significant difference in the P2 amplitude between incongruent and congruent contexts was found from the first-half average (left), but not from the second-half average (right).