Night-time skin patch speeds REM sleep, easing daytime stress, study shows

The University of Texas at Austin team created a soft, skin-adhesive patch named NEUSLeeP that uses gentle ultrasound and electrodes to stimulate brain regions governing REM sleep. In a trial with 28 subjects, the patch cut the latency to REM by 43 minutes and lengthened REM periods by about 16 minutes, while also boosting heart-rate variability, a marker of healthy stress response. Functional imaging revealed alterations in neural pathways linked to emotion, hinting at broader mood benefits.

Users described the device as safe and comfortable, with minimal adverse reactions, and it proved effective for both healthy sleepers and those experiencing sleep problems. The findings, published in Nature Communications, suggest that enhancing REM sleep could aid stress coping and overall well-being, with future research planned for chronic insomnia, PTSD and depression. Co-principal investigators Gregory Fonzo and Vincent Mysliwiec emphasized the goal of offering a non-invasive treatment for mental-health disorders.