Figure 3.

EEG and TMS coil setup

(A) EEG cap: A TMS-compatible 64-channel EEG cap was used.

(B) TMS-coils For active stimulation, a 70 mm figure-of-eight coil was used- For sham stimulation (left), the same type of coil was used, a modified coil was used that provided enough distance from the scalp to ensure the absence of stimulation (right).

(C) Coil position and orientation: Coil should be placed over the O2 electrode of the EEG cap (right occipital site), with the coil surface being tangential to the scalp and the handle oriented perpendicular to the medial plane of the subjects head (latero-medial current direction).