I agree that there is a strong argument that reaction (and overall stress levels) in the initial acute stages of tinnitus probably have an effect on the permanence and or eventual severity of it. But as we discussed (and I thought seemed to agree) only this evening in your moving to the countryside thread, your reaction to an established chronic tinnitus is not likely to actually reduce that tinnitus:
I'm open to the idea that certain kinds of cognitive activity might actually modulate audial cortex activity, but there's not much data to go on either way. However, tinnitus isn't just an audio problem; it starts in that part of the brain and then seems to snake through (broken) thalamus perceptual gates, through the insula, into the amygdala. There is a decent stack of data implying that the structure and function of the latter two structures is malleable and changes in detectable ways as a result of cognitive practices.
So, I guess I'm saying I'm agnostic as to whether or not such things can have any impact on the tinnitus percept in the audial cortex, but am moderately convinced that such things do have an impact on the tinnitus signal as viewed as a pathology of the entire brain. Likewise, long-term meditators are
not shown to generate less pain as a result of a given stimulus as far as I know, but it has been shown that the downstream neurological impact of the pain stimulus is of shorter duration and intensity than it is in matched controls. Then, the question of "does cognition change tinnitus" depends on how you are defining "tinnitus" -- are you looking at hyperactivity in the audial cortex and saying "that right there is tinnitus", or are you looking at the complete feedback circuit in the brain, where audial hyperactivity activates a limbic response and is perceived consciously as negative input, and saying "that is tinnitus"?
That is, this is a semantic argument at this point
Given two people who have the same sound in their head, one of whom is better wired for whatever reason to not react to it aversively, and then followed over a period of years or decades -- it seems very reasonable to suggest that the person who has the aversive reaction, is going to have more negative brain development over that period of time. And, for me, this is what the argument about "reaction" comes down to -- I am just not as optimistic as Dr. Nagler that these things are exactly under conscious control. But, I am sort of agnostic as to the whole idea of conscious control of anything; it may be that we actually live in an entirely deterministic universe... and that's certainly a bigger question than we're going to answer here today.