Fig. 1.

Grand-average coherence. A) Topographies of beta coherence (13–30 Hz) for left and right GPi separately. Shown is the average across the -3 to 3s time interval and all subjects. Red colors indicate larger coherence values. B) Coherence spectra for each individual subject (thin lines) and the grand average (thick line). Spectra are averaged across selected LFP-MEG channel combinations, hemispheres, and conditions.