Figure 6.

Grand averages for coherences at selected regions of interest (ROIs) based on POT (top) and CSD (bottom). F = frontal (10 electrode pairs), FL = frontolateral (6 pairs), FC = frontocentral (8 pairs), T = temporal (6 pairs), TP = temporoparietal (8 pairs), OP = occipitoparietal (6 pairs). Statistics for the larger-than-waking CSD coherences at the frontolateral ROI: P < 0.05, t = 6.20, 2.90, 2.18, df = 18 for subjects 1, 2, and 3. Statistics for the larger-than-REM CSD coherences in lucid dreaming at the frontal ROI: P < 0.05, t = 9.12, 2.96, 6.53, df = 14. Note that only CSD was analyzed statistically (see text). Standard errors are indicated by vertical bars for the frontolateral ROI. Frequency resolution is 4-Hz. POT = scalp potentials; CSD = current source densities; WED = wake with eyes closed