Grand average ERPs to the deviant stimuli from the Cp1/2 site. It is apparent that a P3 response is only observed for attended location stimuli in the attended modality. This is preceded by an contrallateral negativity for visual deviants in the visual group and an N2b response for auditory deviants in the auditory group.
Nager et al. BMC Neuroscience 2006 7:31 doi:10.1186/1471-2202-7-31