Abstract
A novel concept of physiological measurement that has high compatibility with game devices is proposed for unconstraint measurement during game playing; what is called player metrics. As first demonstration experiments of this concept, photopletysmography; arterial pulse measurement by light, with using embedded sensor in two types of VR (Virtual Reality) head mounted displays is attempted, then evaluated. As VR display, PlayStationVR and VR glasses for smartphone were adopted. For photopletysmography, green LED and photo-transistor having sensitivity in green were finally applied to reflection mode measurement. Reflection photopletysmogram was derived from subject's center of forehead. Then, photopletysmographic measurement was robust for simulated ordinary eye blink, cardiac pulse status change by Valsalva maneuver and also displays blinking. Finally, photopletysmogram during VR movie watching in about 6 minutes was successfully obtained. Evaluation results suggested the possibility of stable measurements during gaming with using VR headset.
