Grand average ERPs for the visual novel stimuli. At occipital sites a clear contralateral P1 modulation was found in the visual as well as for the auditory group. In the visual group, an enhancement of the frontal as well as parietal N1 was observed. By contrast, the auditory group showed a more positive waveform for the attended stimuli.
Nager et al. BMC Neuroscience 2006 7:31 doi:10.1186/1471-2202-7-31