Fig. 5
From: Widespread theta synchrony and high-frequency desynchronization underlies enhanced cognition
Power-synchrony correlations across the whole brain. a Pearson correlation of the modulation of high gamma node strength and power across time and frequency for each ROI, during the word encoding interval. Bar plots show the power-synchrony correlation for each ROI, with blue indicating negative and red indicating positive correlations. Faded bars are not significant after FDR correction for multiple comparisons (α = 0.05). b For four example ROIs we depict time-frequency heatmaps of that ROI’s z-scored spectral power (top) and z-scored node strength (bottom). Red colors indicate a relative increase of power/synchrony when an item is successfully encoded, while blue indicates a relative decrease. For visualization only, absolute z-scores < 1.5 are faded, and vertical bars indicate word onset and offset. c Pearson correlation of z-scored power and z-scored node strength (synchrony) against each other for all timepoints and all ROIs, after averaging within frequency band. HG power and HG synchrony are significantly inversely related (P < 0.001, permutation test), HG synchrony is positively correlated with theta power (P = 0.005), while other tested relationships do not meet significance
