Impact of graphical fidelity on physiological responses in virtual environments

Higher quality computer graphics in interactive applications in the areas of virtual reality and games is generally assumed to create a more immersive experience for the end user. In this study we examined this assumption by testing to what degree graphical fidelity was associated with physiological arousal as measured by a galvanic skin response (GSR) sensor. Thirty-six subjects played two different video games at the highest and lowest graphical quality settings while their GSR activity was measured. No significant difference in GSR was observed that was associated with graphical quality. We conclude that, for applications in which an emotional response is desired, increased graphical quality alone does not predict a physiological arousal response.