Evaluating Engagement of Virtual Reality Games Based on First and Third Person Perspective Using EEG and Subjective Metrics

Viewing perspective plays a significant role in gameplay experiences and especially in virtual reality (VR). However, it is still underexplored. In this paper we evaluate how different viewing perspectives relate to psychophysiological engagement, arousal, and valence metrics that are measured using brainwaves. We perform an experiment in which volunteers play a game using different perspectives and displays while their brainwaves are monitored by a commercial Electroencephalogram (EEG) headset. Using the EEG data, we calculate levels of engagement, arousal and valence using a metric from the literature, and then compare these results to answers from a subjective, self-reporting questionnaire. We then discuss how the psychophysiological metrics compare with the subjective ones in this study, verifying that their results do not always match.