Tinnitus (pronounced /tɪˈnaɪtəs/ or /ˈtɪnɪtəs/, from the Latin word tinnītus meaning "ringing") is the perception of sound within the human ear in the absence of corresponding external sound. If you ever are in an area of absolute quiet, still your breathing and move not a muscle. After a few seconds, you will notice that the silence has a sort of "sound" of its own, a kind of empty ringing tone. This is nothing unique, everyone will hear this, given the proper setting. An informed person will tell you that your brain is trying to interpret the lack of stimuli to your hearing and so creates a bit of a filler sound. This ringing sound actually serves a more arcane purpose, covering up a noise we are not meant to hear. This noise is not impossible to hear, and if you are persistent you can e