Fig. 6: Alpha band power in right parieto-temporal areas and low beta band power in right superior parietal lobule predict reaction time to anticipated events.

a Top row: Cortical topography of across-condition Spearman correlation (mean alpha (7–12 Hz) power, RT). Negative correlation reaches a maximum in the posterior middle temporal gyrus (pMTG) region immediately before the Go cue. Colormap fixed across time to highlight across-time correlation dynamics. Bottom row: Re-plotting of the top row with an individual colormap per time span (Supplementary Fig. 9) highlights the correlation extent for each time span. Negative correlation at − 0.35 s in the supramarginal gyrus, and pMTG spreads out to cover the entire inferior parietal lobule (IPL) at −0.25 s and extends to the pMTG region from − 0.15 s on. For visualization, the average cortical surface of the 1200 Subjects Group Average Data⁸⁷ from the Human Connectome Project was used. b Mean Spearman’s rho averaged across sources from two regions of interest (blue: right IPL, N = 85, red: right pMTG, N = 71). Averaging is first done within participants and across sources, then across participants. Error bars are standard errors of the mean. c Number of correlation sources over time. d Cortical topography of across-condition Spearman correlation (mean low beta (15–22 Hz) power, RT). Negative correlation is maximal in the right superior parietal lobule (SPL) before the Go cue. All P-values = 0.0005, uncorrected, Methods. All colormaps fixed across time to highlight across-time correlation dynamics. For visualization, the average cortical surface of the 1200 Subjects Group Average Data⁸⁷ from the Human Connectome Project was used. e Mean Spearman’s rho averaged across sources (N = 28) from right SPL. Averaging first done within participants and across sources, then across participants. Error bars are standard errors of the mean. f Number of correlation sources over time. P-values uncorrected. Source data are provided as a Source Data file.