Lack of sensitivity to location of TMS. Data are from experiment 1 in which there was a 67% probability of TMS on a given trial. A, Data from one subject. Control saccades are in black, saccades that exhibited a pause are in red. Subject 1 exhibited some saccades that had a pause even when there was no TMS on that trial. In the sound-only trials, the TMS coil was placed 30 cm above the head. TMS applied over the parietal cortex and the cerebellum produced similar pauses. The small kink in the velocity profiles is an artifact of TMS. B, C, Data from a second subject showing pro-saccades and anti-saccades with TMS at various locations. This subject showed almost no pauses for the no TMS and sound-only conditions, whereas TMS at different locations on the head showed similar pauses in saccades. Cz refers to the top of the head in the EEG 10–20 system. The velocity traces are for horizontal 15° saccades.