Quiet sound can be used as a safe pain reliever.

It turned out that a quiet (about 50 dB) sound accompaniment lowers the pain threshold of the body. Further research in this direction in the future may allow physicians to use various sound schemes for effective and safe patient pain relief. The first attempts to use sounds as an anesthetic were made back in the 60s of the last century. Dentist Wallace Gardner in those years published a study in which he claimed to have performed about 200 tooth extractions without traditional anesthesia. The only painkiller was the soundtrack.