We all live surrounded by noise, more or less, and patients with tinnitus have to go into a soundproof room where it is very silent when they have their hearing checked. There was a patient who had tinnitus caused by doing an auditory evoked potential test for too long, which I understand was caused by her being in the silence for too long, along with various other tests. In 1953, Heller and Bergman performed a simple but classic experiment. They put 80 people with normal hearing and no tinnitus in a completely soundproof room for 5 minutes. Ninety-three percent said they heard a buzzing sound, a pulse, or a whistling sound in their ears or heads. Eh? What’s going on here? This simple test enabled almost everyone to perceive the electrical activity underlying every nerve cell in the auditory pathway as sound. I venture to infer that the ringing sound in the ear is present in almost every person, only some perceive it and some do not. What kind of people perceive it easily, and what kind of people do not perceive it easily? What does it depend on? Let’s listen to the next analysis of the Department of Otolaryngology of the First Affiliated Hospital of Henan College of Traditional Chinese Medicine, Shen Qi