Figure 2.

MRI‐compatible brush lever system. Velcro was attached to a lever that could be variably positioned on the face to make firm and stable contact with the skin. Plastic/nylon rods attached to the lever allowed us to brush the face while standing at the feet of the subject. Thus, there was no manual reaching into the head coil, and most movement occurred well away from the brain. The motion of the rod was limited using plastic stoppers (black) such that brushing only occurred along the 20 mm length of the stimulation site.