I am writing to comment on the recent article by Piccirillo et al.1 The authors reported that daily low-frequency (1-Hz) repetitive transcranial magnetic stimulation (rTMS) delivered to the left temporoparietal region of the patient's head was no more effective than placebo stimulation for chronic tinnitus. Numerous published studies have concluded otherwise: that rTMS is effective for reducing the severity or loudness of tinnitus for many patients.2-5 The following factors might have contributed to the negative findings reported by Piccirillo and colleagues: