Our brain uses filter systems to efficiently manage the gigantic amounts of information that flow over us. Neuronal alpha oscillations are among them. They help to reduce the flow of information in certain brain regions. https://neurosciencenews.com/neurofeedback-learning-10561/

  Researchers using functional MRI (fMRI) have found that neurofeedback training has the potential to reduce the severity of tinnitus or even eliminate it, according to a study presented today at the annual meeting of the Radiological Society of North America