A new approach for tough-to-treat symptoms
Sleep problems are extremely common among people with chronic tinnitus, affecting more than half of patients. Poor sleep and ringing in the ears often go hand in hand, and together they can worsen brain health, leading to memory problems and cognitive decline as people age. Unfortunately, safe and effective non-drug treatments for these overlapping conditions remain limited.
Researchers are now testing a new method called transcranial ultrasound stimulation (TUS), which uses focused sound waves to gently stimulate deep areas of the brain. Unlike transcranial magnetic stimulation (TMS), which targets surface-level brain regions, ultrasound can reach deeper structures with greater precision. This makes it an exciting possibility for treating symptoms that may be linked to areas like the hippocampus, a region crucial for memory and sleep regulation.
Inside the clinical trial
A pilot clinical trial in China is enrolling adults aged 60 to 90 who experience both sleep problems and tinnitus. Participants are randomly assigned to receive either real TUS or a sham (placebo-like) version.
The treatment plan is brief: six sessions over two weeks, with each session lasting just 80 seconds. Before treatment, researchers use MRI scans to create a personalized brain map, ensuring the ultrasound waves reach the left hippocampus with accuracy.
Patients’ progress is measured over 12 weeks, focusing on sleep quality, tinnitus severity, brain activity, and even the brain’s natural fluid-clearing system (the glymphatic system). Researchers are also watching closely for side effects, though TUS is considered safe and non-invasive.
Why it matters
If successful, this study could open new doors in treating not only tinnitus-related sleep disturbances but also other brain disorders linked to aging. Unlike medications, which can cause side effects or interact with other drugs, transcranial ultrasound stimulation offers a gentle, targeted, and drug-free alternative.
For older adults struggling with chronic sleep loss and tinnitus, this research represents a step toward personalized therapies that go deeper into the brain where many of these problems begin.
Conclusion
This clinical trial will provide important evidence about whether TUS can significantly improve sleep and tinnitus symptoms. If the results are positive, it could reshape how we treat age-related brain conditions, giving patients a safe and non-invasive option to restore rest and quality of life.
Citations:
Ni X, Yuen YS, Li Z, et al. Focused low-intensity hippocampal transcranial ultrasound stimulation for sleep disturbances in patients with chronic tinnitus: A pilot randomized controlled trial protocol. PLOS One. 2025. https://doi.org/10.1371/journal.pone.0329950
Liu Z, Zhang L, Bai L, et al. Repetitive Transcranial Magnetic Stimulation and Tai Chi Chuan for Older Adults With Sleep Disorders and Mild Cognitive Impairment: A Randomized Clinical Trial. JAMA Network Open. 2025;8(1):e2454307. https://doi.org/10.1001/jamanetworkopen.2024.54307