Julien, a 28-year-old programmer, describes tinnitus—the perception of ringing, buzzing, or other phantom sounds in the ears—as a constant presence in his life. It has affected his ability to focus and enjoy live music. A meta-analysis from 2025 found that people with tinnitus are twice as likely to attempt suicide compared to those without the condition. While current treatments can reduce distress, none can eliminate the sounds entirely, and a definitive cure remains elusive. The earliest attempts to treat tinnitus date back to the dawn of electricity. In 1801, Dr. Grapengiesser used a primitive electrode in the ear to either reduce or intensify the condition. This sparked research that led to the development of the cochlear implant, a device that uses an external processor to capture sound and transmit it via an electrode to the auditory nerve. While these implants can reduce tinnitus in many users, they are only used in people who are profoundly deaf, as the surgery can damage natural hearing. A new clinical trial led by researcher Kelly Assouly is testing a less invasive prototype for people with normal hearing, though the exact effects of electrical stimulation on the inner ear are still unclear. Tinnitus is often linked to damage in the inner ear, such as from loud noise, disease, or certain medications, and is frequently worsened by stress. This damage can cause a small area of the brain, the dorsal cochlear nucleus, to become hyperactive, producing a kind of electrical "buzz." According to Dirk De Ridder, a neurosurgeon and founder of the Brai3n clinic in Ghent, tinnitus occurs when this hyperactivity is encoded by the brain's consciousness networks. Meanwhile, Susan Shore of the University of Michigan has developed a device that uses a technique called bimodal stimulation. It sends a signal to the jaw and then a sound signal a few milliseconds later, leveraging the connection between the auditory system and the nerves of the face and neck. Early trials showed a 75% reduction in tinnitus symptoms, compared to 25% with a placebo, but the device is still awaiting approval from the FDA. Other researchers are exploring the role of potassium channels in tinnitus. Thanos Tzounopoulos at the Pittsburgh Hearing Research Center explains that in tinnitus, neurons fail to maintain the correct electrical balance, which depends on ion pumps. A drug called retigabine, used to treat epilepsy, was found to reduce tinnitus symptoms before being withdrawn due to side effects. Tzounopoulos believes a more targeted version of this drug could offer a solution, and similar compounds are currently being tested in humans for other neurological conditions. In the absence of a cure, many patients use cognitive-behavioral therapy, relaxation techniques, or sound therapy to manage their symptoms. However, these approaches do not eliminate the perception of the noise itself. The Lenire device, which delivers electrical stimulation to the tongue, has been approved in the EU but its effectiveness is still debated. Meanwhile, Daniel Polley at Harvard is studying brain cells called PV+ interneurons, which help regulate brain activity. His research suggests that these cells may become impaired with age or after hearing loss, and preliminary studies in mice showed that reactivating them could reduce tinnitus symptoms. Dirk De Ridder believes tinnitus is a "network problem," where different brain regions synchronize abnormally. He has identified specific patterns in brain activity, called dysrhythmias, that distinguish tinnitus patients. These patterns vary among individuals, forming different subtypes. Using AI, he aims to analyze a large dataset of brain scans to identify distinct profiles that could guide future treatments. Deep brain stimulation has been tested in small groups of patients, targeting areas involved in emotion, attention, and sensation. However, results have been inconsistent. Researchers at Oxford are now exploring transcranial ultrasound stimulation (TUS), which uses sound waves to target specific brain regions without surgery. This method could offer a safer and more precise alternative to traditional brain implants. Arnaud Norena at the University of Aix-Marseille is investigating the link between tinnitus and hyperacusis, a condition where ordinary sounds are perceived as unbearably loud. He suggests that after inner ear damage, the brain compensates by increasing the sensitivity of the auditory system, leading to both tinnitus and hyperacusis. He is also studying how these conditions relate to autism spectrum disorders and Williams syndrome, where sound sensitivity is common, in hopes of uncovering shared biological mechanisms.