Longevity & AgingBrain Stimulation for Sleep: Why It Hasn't Worked Yet and What Comes Next
Despite decades of research, non-invasive brain stimulation (NIBS) techniques like TMS and tDCS have not produced evidence-based sleep treatments. Small, poorly controlled studies dominate the literature, and strong placebo effects from stimulation devices obscure true benefits. New technologies—transcranial ultrasound stimulation (TUS) and temporal interference stimulation (TIS)—can now reach deep sleep-regulatory brain regions previously inaccessible. Closed-loop auditory stimulation that responds to real-time brain rhythms shows genuine promise for enhancing slow-wave sleep oscillations. The authors argue that insomnia may be the wrong starting target, proposing instead that NIBS focus on modulating specific sleep oscillations, reshaping traumatic memories during sleep, boosting wakefulness in depression, and disrupting pathological activity in sleep-related epilepsy.
