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Initial alpha asymmetry scores measured in prefrontal (FP: FP2−FP1), frontal (F: F4−F3), central (C: C4−C3), parietal (P: (P7+P3)/2−(P8+P4)/2), and occipital (O: O2−O1) areas of the scalp. Positive asymmetry scores denote left over right activation, i.e., more alpha power in right hemisphere locations. * significant effect (p < 0.05), ± statistical trend (p < 0.1). Note that statistical results are not corrected for the multiple areas.
