Sources of correlated neural activity for components 1, 2, and 3. The scalp projections of the correlated activity are shown in the top left of each pane; the estimated distributions of cortical sources are depicted in the remaining three panes. The correlated activity of component 1 suggests involvement of the posterior cingulate gyrus (Brodmann Area 31, labeled pcg), the parahippocampal gyrus (Brodmann Area 27, phg), and precuneus (Brodmann Area 7, pcu). The postcentral gyrus (pocg) and paracentral lobule (pacl) are implicated in the localization of the activity in component two. The activity captured by component 3 is consistent with sources in the inferior frontal gyrus (ifg) and the orbital gyrus (og). Anatomical locations shown are approximate.