I also read about it on Tinnitus Talk.
I can clearly modulate my loudest sound (high pitch eee) by moving my jaw forward and clenching. The sound becomes more intense/louder. I wish it would do the reverse, but no of course not. It's tinnitus.
Yay, I can influence my loudest sound and make it even louder.
If I plug my ears or put my head against my pillow and clench/bite, then I get an additional sound on top of the three I already have.
I hate tinnitus.
Clearly putting tension on some muscle exacerbates tinnitus (temporarily) for some people. This is well known and documented. A majority can do this I believe.
More importantly though, can any conclusion be drawn from having a somatic component to your tinnitus? I do not have TMJ or any jaw issue. I do not have a somatic induced tinnitus, yet I can influence it with a jaw movement.
Is it because it excites the neurons in the DCN even more, because the jaw nerves are so close to it? Not sure what exactly happens physiologically.
What interests me the most is, could this mean that your tinnitus sound is coming from your cochlea? If your tinnitus would be generated in your brain without cochlear damage, how could you possibly influence it by moving your jaw?