Thanks Mark. I will be sure to ask more information based on what you said. I cannot tell what type it is (volitional vs. non-volitional). All I do is stare at a scene on the computer screen - usually a beach or northern lights scene. It is not a game. I know that the administrator looks at my brain waves, and she tells me that when I am watching the screen, my waves go from "chaotic" to "calm".

Is that what you mean by "measuring the improvement by changes in waveforms"?

Is there a type of neurofeedback that is most effective for TBI that you know of?

Thank you.