Hey group,
Please take a look at this case study that demonstrates the efficacy of neurofeedback for brain injury rehabilitation. This case is pretty severe, so the goal of neurofeedback for this individual is not to return him to normal functioning but rather, to increase the quality of his life. But if it can improve the situation for this person, think what it could do for someone with a mild traumatic brain injury.
http://www.peakac.com.au/resources/james%20page3.html