Beitrag auf der IEEE VR 2019 in Osaka, Japan
11.04.2019Der Lehrstuhl für Psychologische Ergonomie war dieses Jahr auf der IEEE VR mit einem Beitrag vertreten. Seit 1993 bietet die IEEE VR ein internationales Forum für Forschungsergebnisses aus den Bereichen Virtual und Augmented Reality. Daniel Reinhardt und JProf. Carolin Wienrich (Mensch-Technik-Systeme) präsentierten das Paper „Entropy of Controller Movements Reflects Mental Workload in Virtual Reality“, welches beschreibt, inwiefern mentale Arbeitsbelastung in Virtual Reality durch Auswertung von Controllerbewegungen bewertet werden kann.
Adstract:
Virtual Reality can impose cognitive demands on users and influence their task performance. These cognitive demands, however, have been difficult to measure precisely without inducing breaks of pres- ence. Based on findings in psychological science on how motion trajectories reflect underlying cognitive processes, we investigated entropy (i.e. the degree of movement irregularity) as an unobtrusive measure of mental workload. Entropy values were obtained from a time-series history of controller movement data. Mental workload is considered high over a given time interval, when the measured entropy is high as well. By manipulating the difficulty of a simple rhythm game we could show that the results are comparable to the results of the NASA-TLX questionnaire, which is currently used as the gold standard in VR for measuring mental workload. Thus, our results pave the way for further investigating the entropy of controller movements as a precise measurement of mental workload in VR.
Reinhardt, D., Haesler, S., Hurtienne, J., & Wienrich, C. (2019). Entropy of Controller Movements Reflects Mental Workload in Virtual Reality. In Proceedings of the 26th IEEE Virtual Reality (VR) conference.
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