We further demonstrated, in this study, the effectiveness of the multimodal integration of fMRI and EEG data for high spatial and temporal resolution analysis of brain network activity. Aiming at improving the accuracy of the estimated sources with respect to direct ERP localization, a number of integrated methods based on EEG and fMRI data had been already proposed. From this standpoint, the most common approach is based on the use of spatial constraints, where information from the location of fMRI activation is used for event-related potential (ERP) source reconstruction [Bledowski et al., 2004; Mulert at al., 2004].
