Figure 3

Grand-averaged ERPs synchronised with onset of first tone. Grand averaged ERPs at Fz, Cz, T7 and T8 elicited following the single tone and tone pair conditions at each of the ISIs. ERPs for the adult sample are displayed in the upper panel of the figure and ERPs for the child sample are displayed in the lower panel of the figure. Amplitudes (in microvolts) are represented on the y-axis. Negative voltages are plotted as a downward deflection. The x-axis represents time (in ms) from 50 ms prior to the onset of the first tone in the pair to 1200 ms post-stimulus onset. The latencies of tone onset and duration are also depicted on the x-axis.