This is mentioned on the ATA page as a treatment being researched... I haven't heard of it before.
Then I found this video, don't know if it's the same thing or if it's fantasy or something being researched?
Someone drill a hole in my scalp, stick an implant in it, and make this noise stop. How hard can it be? If they can stop tremors why can't they stop this messed up signalling.
Edit - justvfound more info but you probably all know it already.
https://www.wysscenter.ch/project/reducing-tinnitus-with-neurofeedback/
I don't see any mention on the underlying technology behind this, all I see is some fancy animated computer graphics.
The auditory cortex is fairly complex and it's not just a matter of hooking up a device to it, sending some electrical impulses and calling it a day, in fact you'd only risk making your tinnitus and auditory impairments much worse.
The only significant way to identify the part of the auditory cortex that responds to the tinnitus signal is to isolate it (hopefully in a temporary fashion) from the rest of the brain, in vivo, through neuro surgery, until you stop hearing the noise, so the surgeon knows what part to work with and proceeds to a more permanent way to isolate the problematic part of the cortex (which may or may not lead to other side effects).
Such operations are experimental, theoretical and pending reviews and stem from other experimental work done to control/prevent seizures, let alone some magical device that would achieve the same thing.
Allow me to be rather skeptical on this, besides inner ear regeneration appears to be more practical, heal more ailments (such as hearing loss and presbycusis), offer more promising outcomes and is more likely to be achieved in the foreseeable future.
While directly targeting the brain would offer treatment for people who suffer from tinnitus that's not tied to some form of inner ear damage, those form of tinnitus may not always originate from the auditory cortex, especially for people suffering from actual brain damage, such as chronic tinnitus appearing after a concussion or a stroke, for which there may be no possible cure. This approach would also not fix pulsatile tinnitus.