
People with tinnitus experience persistent ringing or buzzing in their ears that can significantly impact their quality of life — and now, scientists think they finally know what causes the condition.
A new study revealed that people with tinnitus have damage to specific fibers within their auditory nerve that is not detected by standard hearing tests. In addition, neurons in the brainstem — a region at the bottom of the brain that connects to the spinal cord — are more active in response to noise in people with tinnitus than in those who have never experienced it.