Validation of Therapeutic Effects of Cefaly on Insomnia

Insomnia is well-known for its association with adverse health outcomes. Although insomnia is usually treated with hypnotics or cognitive behavioral therapy for insomnia, the need for novel nonpharmacological treatment for insomnia is increasing emphasized due to reports of side effects and detrimental consequences of hypnotics. Trigeminal nerve electrical neuromodulation has been suggested as a potential treatment modality through its modulation of noradrenergic activity that results in promoting relaxation and reducing hyperarousal. Insomnia patients enrolled in the study will go through a 20-minute daily session of the Cefaly device(originally FDA-approved device for migraine, which electrically modulates trigeminal nerve) for 4 weeks. The objective of this study is to test whether trigeminal nerve electrical neuromodulation has a therapeutic effect, validation measures involving subjective measures(Pittsburgh Sleep Quality Index, Insomnia Severity Index, Epworth Sleepiness Scale), objective measures(Polysomnography measures) and neuroimaging(changes in resting state networks, cortical thickness, fractional anisotropy and mean diffusivity).