Fig. 2

Grand-averaged log-transformed spectral power during rest with a eyes open and b eyes closed. Spectral power is shown as a continuous spectrum (top) and averaged in canonical frequency bands (middle), both averaged over all EEG channels, and as topographic maps (bottom). (Abbreviations: δ: delta, 1–3 Hz; θ: theta, 4–7 Hz; α: alpha, 8–11 Hz; β: beta, 12–29 Hz; (low) γ: low-gamma, 30–47 Hz; (high) γ: high-gamma, 53–100 Hz. Box plots: crossbars represent the median, dots represent the mean, upper and lower hinges correspond to the 1st and 3rd quartile, respectively, and whiskers represent the range of the data. * and ^ significant main effect of group in the delta and theta bands, respectively, collapsed over condition)