Interesting. How do they know rats are suffering tinnitus?
Well, it's known that tinnitus is caused by false signals from the nerves in the ear to the brain. I would assume that they create the tinnitus in the same way that humans develop it - by loud noise, and that they have some way of measuring the nerve impulses in question both before and after treatment. But I agree, it would be nice if they had told us that. It is, however, only a news story not a journal article.