FT7 & FT8, FC5 & FC6, FC3 & FC4, FC1 & FC2, T7 & T8, C7 & C6, C3 & C4, C1 & C2, TP7 & TP8, CP5 & CP6, CP3 & CP4, CP1 & CP2, P7 & P8, P5 & P6, P3 & P4, P1 & P2, PO7 & PO8, PO5 & PO6, PO3 & PO4, O1 & O2). Higher asymmetry score values are commonly believed to reflect relatively greater left activity (i.e., relatively greater right alpha; cf. Allen et al., 2004a). Although asymmetry scores were computed for all homologous channel pairs, analyses for the present study were performed on a specific subset of those pairs (frontal: F2-F1, F4-F3, F6-F5, F8-F7) that correspond to regions commonly studied throughout the asymmetry literature (F4-F3 and F8-F7: see review by Coan & Allen, 2004) as well as channels that neighbor these pairs, potentially providing better resolution of the lateral and medial extent of depression-related frontal asymmetry.
