Bessel van der Kolk, a leading expert in trauma, spearheaded a randomized control study to examine the effectiveness of neurofeedback in the treatment of chronic PTSD. Compared to a waitlist control group who was still receiving "treatment as usual", individuals who completed neurofeedback training had significant improvement in PTSD symptoms. In fact, 72.7% of the Neurofeedback group no longer met criteria for PTSD. Click here to read this open access article.
Several studies have shown that neurofeedback can reduce the symptoms of ADHD. Here are a few examples:
Bussalb, A., Congedo, M., Barthélemy, Q., Ojeda, D., Acquaviva, E., Delorme, R., & Mayaud, L. (2019). Clinical and Experimental Factors Influencing the Efficacy of Neurofeedback in ADHD: A Meta-Analysis. Frontiers in Psychiatry,10. doi:10.3389/fpsyt.2019.00035
Enriquez-Geppert, S., Smit, D., Pimenta, M. G., & Arns, M. (2019). Neurofeedback as a Treatment Intervention in ADHD: Current Evidence and Practice. Current Psychiatry Reports,21(6). doi:10.1007/s11920-019-1021-4
Shereena, E. A., Gupta, R. K., Bennett, C. N., Sagar, K. J., & Rajeswaran, J. (2018). EEG Neurofeedback Training in Children With Attention Deficit/Hyperactivity Disorder: A Cognitive and Behavioral Outcome Study. Clinical EEG and Neuroscience,50(4), 242-255. doi:10.1177/1550059418813034
A meta-analysis published in 2021 found that neurofeedback significantly improved symptoms of autism spectrum disorders. Furthermore, studies have found that the effects of neurofeedback remained at a one-year follow-up.
van Hoogdalem, L. E., Feijs, H. M. E., Bramer, W. M., Ismail, S. Y., & van Dongen, J. D. M. (2021). The effectiveness of neurofeedback therapy as an alternative treatment for autism spectrum disorders in children: A systematic review. Journal of Psychophysiology, 35(2), 102–115. https://doi.org/10.1027/0269-8803/a000265