Abstract: Objective To explore the effect of transcranial magnetic stimulation (TMS) on polysomnography in patients with insomnia.Methods 20 healthy volunteers and 60 patients with primary insomnia from the outpatient department were chosen. The insomnia patients were divided into 2 groups with 30 patients in each group, one group received TMS every day, the other group received benzodiazepine 5 mg every night, both groups were treated for 14 days. The healthy volunteer received no treatment. The effect was assessed with polysomnography before and after treatment. 20 healthy volunteers were as the normal group and they were assessed by polysomnography only when they were collected. Results TMS and benzodiazepine have the same effect on sleep latency, sleep time, awakening time and sleep efficiency.And TMS may increase S3~S4 and rapid eye movement sleep. Conclusion TMS has better effect than benzodiazepine in the treatment of sleep disorder.

Key words: sleep disorder, transcranial magnetic stimulation, sleep structure