Fig. 6.

Mean (over the 24 participants) maps of the R² of the voxel-wise correlations between the beamformer envelope time series and the head movement metrics, for the alpha frequency band. The three panels, from top to bottom, show the maps for no head movement correction, for head movement correction resulting by regressing the head movement metrics out of the beamformer envelope time series, and for head movement correction resulting from the participant-specific high-pass filter. No correlations remain in the group after regressing out the head movement metrics, while some small values of R² remain after the participant-specific high-pass filter.