A small amount of time passes between the moment of detection of sounds by the cochlea and the perception of sound from the auditory cortex of the brain. However, during this time various connections and interactions occur between the auditory canal and other parts of the brain, which are not fully known to science. The way they function is even more obscure.
Tinnitus is the change in electrical activity that occurs for any reason in the auditory threshold and is perceived by the brain as sound, despite the fact that there is no new sound in the environment. The auditory cortex “does not recognize” that this activity is not external. It simply treats it as a sound. Similarly, the brain does not know that this new electrical activity is not a threat, so it reacts as if it were such a threat.
The discomfort caused by tinnitus can have a direct impact on the patients’ psychological health, as the more they concentrate to drive off tinnitus, the worse it gets, resulting to anger or even severe depression.
Tinnitus can also be caused by attending a concert or being in a music venue, although it usually lasts only a few hours.