A company with the name NeuroFocus could play a role in the flow-testing of games. Instead of filling out questionnaires, what in the game is rewarding or boring could be just measured with brainwave-technology. I even could imagine real-time statistics and nice visualisation about the things, that drive gameplay. Gamasutra writes about, what packages the company will offer. Quite a lot:
“The NGame suite includes NSequels, which is designed to identify core game elements that build into a franchise; NTarget, which offers user group analysis, design, implementation, and marketing recommendations; NeuroNet, which is geared for multi-player and social gaming; and TGA (Total Gamer experience), which measures multi-sensory gaming effectiveness. NGame also offers NPlatform Analysis; NLevels, which identifies “NeuroFrustrators/NeuroRewards” in games, and GCA (Game Compressions Analysis), an automated selection of the most powerful neurological components in a game.”
