Cutting and pasting a reply I made a few days ago on this same topic:
Tinnitus most likely arises from an inappropriate brain response to a loss of auditory input. Once this happens, even if the "false signals" stop tinnitus doesn't necessarily go away.
More than likely it is an overactive auditory cortex that is producing the tinnitus sound than hair cells constantly firing.
Think of it this way, there is damage to either the hair cells or nerve fibers causing a loss of input to the brain, instead of moving on the brain overreacts and starts producing a sound to fill in that gap, over time this gets hardwired in the brain and it becomes permanent, the new 'silence'.
I get this,
@Alue . Then again, I wonder ... isn't it the brain/central nervous system's job to "hear" and "interpret" the signals (incoming sound waves/stimulated hair cells, synaptic connections to the auditory nerve, etc.) coming in from outside the ear, the sounds generated in the world?
And then, of course, the CNS part must be capable of also producing (or is always in a state of "humming") with all the various sound frequencies, etc. as a response to the incoming signals, and then it sends these "inner sounds" to all the different brain areas for processing, understanding, emotional reacting, etc.
But might not a permanently inflamed and fired up auditory nerve be the source for the brain's "sound production" or "response" that is known as tinnitus???
And in people whose tinnitus goes up and down, or on and off, it could be the result of the auditory nerve either being more or less inflamed/excitatory on that particular day??? Sort of how people with so-called "autoimmune" arthritis also have their good and bad inflammation days??
Because, in my ears, if I take my finger and "strum" the external ear cartilage with sufficient force, I can MAKE the sound generate, exactly like a plucked guitar string. I am CONVINCED that my acoustic nerves are inflamed in there, and causing lots of this mayhem.
Hey,
@Steve , I know I keep tagging you. But I'd be interested in this question too, as part of the Dots investigating/"somatic" questions ... Thanks!