Scientific Reports 1, Article number: 54 (2011); Published: 4 August 2011; Updated: 17 January 2013

Due to a technical error, the scale for the y-axis was reversed for Figures 1, 2 and 4. The corrected figures, along with their legends, appear below.

Figure 1
figure 1

(Top) Grand-average ERP waveforms recorded at left and right mesial occipital sites in response to sound and non-sound stimuli.

Figure 2
figure 2

Grand-average ERP waveforms recorded at left and right fronto-central sites in response to sound and non-sound stimuli.

Figure 4
figure 3

Grand-average ERP waveforms recorded at left and right temporo-parietal and posterior-temporal sites in response to sound and non-sound stimuli.