Independent component source locations were estimated by creating an equivalent current dipole model for each component using the dipfit function from EEGLAB, this function estimates dipole location by applying inverse source modeling methods to a standard boundary element head model. The coordinate system used to specify electrode locations of both sets of data is publicly available as a look-up table [“10-5-System Mastoids EGI129.csd”] via the CSD toolbox. Three types of data were analyzed: (i) the back-projected independent time-course of the selected component (see below), (ii) the time-course of the CSD interpolated data from the selected channel (see below), and (iii) the time-course of the raw, spatially un-filtered data from the selected channel.
