Fig. 5
Power spectrum profile at channel Cz pre and post-quality control. Spectral power (1–30 Hz) profile pre-quality control (top) and postquality control once flagged time, channels, and ICs were removed (middle). Lines represent single subjects (grey), median (black), quartiles (green), and quantiles (red). For comparison across sites, median spectral power is plotted separately for pre (grey) and post-quality (blue), as well as the median difference between pre and post-quality control (black, bottom)