Design of Wearable, Non-invasive System for Sleep Enhancement

As people age, deep, restorative sleep—called slow-wave sleep—declines significantly. This loss of deep sleep contributes to memory problems, cognitive decline, and increased risk for diseases like Alzheimer’s. Poor sleep also weakens the immune system, increases inflammation, and accelerates biological aging. Despite the critical role of sleep in healthy aging, there are no safe, effective, and easy-to-use technologies that can actively enhance deep sleep at home.

We propose developing NEUSleeP, a wearable, non-invasive sleep patch that uses real-time brain monitoring combined with focused ultrasound stimulation to enhance slow-wave sleep. The patch records brain activity using soft, long-lasting EEG electrodes and tracks sleep stages throughout the night. When deep sleep begins, the system delivers gentle ultrasound pulses to specific brain areas responsible for promoting sleep—the ventrolateral preoptic area (VLPO) and median preoptic nucleus (MnPO). These regions naturally help the brain shift into and maintain deep sleep, and scientific research has shown that stimulating them enhances slow-wave sleep.

NEUSleeP’s closed-loop system automatically adjusts stimulation based on each user’s brain activity, providing personalized sleep enhancement without disrupting natural sleep cycles. The patch is designed to be comfortable, wireless, and suitable for long-term home use.

By enhancing deep sleep, NEUSleeP could improve memory, cognitive function, and emotional well-being, while also supporting immune health and reducing age-related inflammation. If successful, this innovative technology could help older adults maintain brain health and resilience, extending healthy lifespan and improving quality of life.