Each week, the patient rested quietly with her eyes open while receiving alpha-frequency tACS for 40 minutes. Stimulation was delivered at 10 Hz with 1 mA zero-to-peak amplitude in-phase to the location 1 and the location 2 acquired by the MEG technique with 5\*5 cm electrodes. A 5\* 7 cm return electrode was centered on Cz. In total, 20 weeks.