Does serotonin play a role in tinnitus? Mouse study raises question
April 25, 2026
OHSU research that finds serotonin, a brain chemical best known for regulating mood, can overstimulate neurons in a key hearing center. Laurence Trussell, Ph.D., says, “If those neurons were just firing constantly even though there was no sound, the brain would say that there’s a sound there.”