Fig. 7. Spearman correlations (rho) between multiscale entropy (MSE) and intelligence during intelligence testing in Sample 2 (EEG) for the three consecutive periods (epochs) of the RPM trial.

The first epoch is displayed in (A), the second epoch in (B), and the third (last) epoch in (C). Epochs lasted 10 seconds. Each row corresponds to one EEG electrode, and each column to a timescale (1–20). Significant correlations (p < 0.05, cluster-based permutation test) are marked with asterisks.