"I've just never read or heard of anyone having a damaged vestibular nerve."
There are millions of us.
VEMP, head impulse test, head impulse with goggles, rotary chair and my own common sense, when I move vision horizontally the eye slips because the sideways correction is gone (there are 100's of texts on VOR after vestibular injury).
Here is one from the leading authority on stupidity in vestibular research
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3289127/pdf/fneur-03-00021.pdf
The eye moves reflexively to the signals of the vestibular nerve, it is the fastest know reflex in the body.
Avian species use their necks in the same way as we use our eyes to lock their gaze during motion
I spoke once to someone at St@nf0rd and that person presented different theories on this, one theory is that the brain can adapt to any damage less than 20 percent of previous CAPs, that is to say that the nerves in the ear work at very high output (heavy traffic) and that anything less than 80 percent of previous firing rates results in functional deficits. Cocktail party effect is thought to be this 80:20 theory at play. REMEMBER THIS IS ONLY A THEORY. The ear nerve is dynamic, how can the ear be in beside a lawnmower yet still hear a tennis ball bouncing beside it? The nerve is dynamic, its not as straightforward as a cable. One big area where this is talked about a lot is Van De Bergs work using balance prosthetics, the problem of cross talk exists where stimulating one nerve can activate another neighbouring one accidentally, that work is very important as to deal with cross talk they have to make ear damage animal models to discover the secrets of nerve viii. Raymond Van De Berg if you read this, many thanks for your attempts to help us sir.
Anyway I don't want to hijack this thread, its about Staeckers trial, but I will say this, all men who enter vestibular research
fail, the study of human balance and its peripheral organ is a graveyard for scientists who
thought that they were clever, and clever
IS as clever
DOES, so as of 2016 damage to the vestibular organ has no treatment. It is shocking news for the dizzy patient and not easy for clinicians to inform sufferers of this.