Figure 2

Cortical timing change in response to "da" in background noise. A) P1' of the response to "da" in background noise is plotted for the average of the trained children (red) and the average of the control children (black) for both pre- (solid) and post- (dashed) test. The peaks chosen for P1' are marked. B) Drop line plot of P1' latencies in noise for all trained children (red) and the mean of control children (C, black) for both pre- (solid) and post- (open) test. The criterion for normalcy (1.6 SD later than the typically-developing mean) is plotted as a dashed line.