Five minutes of eyes-closed resting-state MEG data were recorded on a 306-channel
whole-head system (Elekta Neuromag Oy, Helsinki, Finland) and processed
according to a standardized procedure (Figure 1 and Supplementary Information ). In short, MEG data were visually
inspected to discard malfunctioning channels, and the temporal extension of
Signal Space Separation removed artifacts.19 (link) Source-localized MEG data were then constructed for 78 cortical regions
of the automated anatomical labeling atlas20 (link) using a beamformer approach.13 (link) Subsequently, 52 epochs of 4096 samples (3.27 s) were filtered into
canonical frequency bands in Matlab (R2012a): delta (0.5–4 Hz), theta (4–8 Hz),
alpha1 (8–10 Hz), alpha2 (10–13 Hz), beta (13–30 Hz), and gamma (30–48 Hz).
whole-head system (Elekta Neuromag Oy, Helsinki, Finland) and processed
according to a standardized procedure (
inspected to discard malfunctioning channels, and the temporal extension of
Signal Space Separation removed artifacts.19 (link) Source-localized MEG data were then constructed for 78 cortical regions
of the automated anatomical labeling atlas20 (link) using a beamformer approach.13 (link) Subsequently, 52 epochs of 4096 samples (3.27 s) were filtered into
canonical frequency bands in Matlab (R2012a): delta (0.5–4 Hz), theta (4–8 Hz),
alpha1 (8–10 Hz), alpha2 (10–13 Hz), beta (13–30 Hz), and gamma (30–48 Hz).
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