Fig. 4.

Subject-averaged sliding window plots showing task contrast amplitude $\Delta C\left(t\right)$, baseline signal offset $\overline{\Delta S}\left(t\right),$and AIR regressor (with sign reversed to demonstrate its anticorrelation with $\overline{\Delta S}$). Red bars on the figure represent Air-on periods while top blue bars represent SM task on-blocks. Signal was normalized by the mean of task contrast for each subject before averaging.