Yes. Neurofeedback training has been around since the 1970s. Most of the empirical research on the efficacy of neurofeedback pertains to ADHD and anxiety. New studies are continually being conducted and published pertaining to an array of clinical conditions. A frequently updated bibliography is maintained by the International Society for Neurofeedback Research. www.isnr.org/isnr-comprehensive-bibliography
One difficulty with neurofeedback research is nearly all pathologies have different profiles. There is no “one size fits all” treatment approach. It requires a trained clinician to determine the appropriate treatment for each individual.