 A prior study had shown that rhythmic, but not arrhythmic, 12-hz stimulation of the median nerve, MNS, could reduce ticks in patients with Tourette syndrome, TS, however, this study did not include any control conditions or measure the duration of the stimulation block. In this follow-up study, 32 patients with TS were given two study visits, one with rhythmic and one with arrhythmic MNS, in random order. The study found that both rhythmic and arrhythmic MNS reduced tick frequency, intensity, and urge, but the two treatments did not differ significantly. Additionally, the study found that the benefits of MNS were not due to the entrainment of the sensorimotor cortex EG signal as suggested by the previous study. Furthermore, the study also found that the benefits of MNS were not due to a placebo effect. This article was authored by N. M. Iverson, Amanda L. Arbuckle, Keisuke Ueda, and others.