This question actually was brought up by Stephan Jung on OpenEEG mailing list, and I found it quite interesting.
Neurofeedback is built around reading person's brainwaves and presenting them back in perceivable form - so that, for example, game character moves faster for one type of brainwave patterns and slower for others, so person can perceive from character's speed what type of brainwaves currently flowing from his brain. And we know from neurofeedback studies that if done for period of time long enough, this can lead to permanent change of brainwave patterns, which in turn leads to change in behavior, mood, attention and etc.
But this - reading brainwaves & presenting them back - is what actually some types of BCI do. So prolonged usage of such BCI while playing could lead to unpleasant changes in player's brain functioning.
What are you thoughts about this?
Tags: BCI, games, neurofeedback