CSD-PCA solutions has provided empirical evidence that no ERP information is distorted or lost after eliminating ambiguities stemming from the recording reference; instead, experimental effects were clarified and additional insights emerged when utilizing CSD as a bridge between montage-dependent scalp potentials and their underlying current generators (Kayser and Tenke, 2006a). CSD compared to ERP analysis offers better spatial and temporal resolution without the need for prior assumptions about generator sources (e.g., tissue conductivity and geometry, laminar orientation, number and independence of generators), which is in striking contrast to EEG source localization methods (Michel et al., 2004).
