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Effects of End-to-end Latency on User Experience and Performance in Immersive Virtual Reality Applications

Caserman, Polona and Martinussen, Michelle and Göbel, Stefan van der Spek, Erik and Göbel, Stefan and Do, Ellen Yi-Luen and Clua, Esteban and Hauge, Jannicke Baalsrud (eds.) (2019):
Effects of End-to-end Latency on User Experience and Performance in Immersive Virtual Reality Applications.
In: ICEC-JCSG 2019, Arequipa, Peru, 11.-15. November, 2019, pp. 57-69, DOI: 10.1007/978-3-030-34644-7,
[Online-Edition: ftp://ftp.kom.tu-darmstadt.de/papers/CMG19.pdf],
[Conference or Workshop Item]

Abstract

Immersive virtual reality (IVR) offers an opportunity to immerse oneself into a virtual world and experience an exciting adventure. However, latency between a user's movement and visual feedback has a big impact on user experience and performance. In this paper, we explore the effect of increased end-to-end latency in IVR applications by conducting a user study. Firstly, in the searching task, we analyze cybersickness level based on simulator sickness questionnaire. Secondly, in the reaching task, we measure the user performance by tracking the time they need to reach a target and the error they make during the execution. Lastly, in the embodiment task, we measure the sense of body ownership, agency, presence, and latency perception when only one body side is impaired by latency. We apply the Friedman test with Conover's test of multiple comparisons as a post-hoc test on all dependent variables to find significant results. Results show that the end-to-end latency above 63Â ms induces significant cybersickness symptoms. In addition, user performance decreases with increasing delay and with end-to-end latency above 69Â ms, the users need significantly longer to complete the task. Results also show that end-to-end latency affects body ownership significant later, namely, not until 101Â ms.

Item Type: Conference or Workshop Item
Erschienen: 2019
Editors: van der Spek, Erik and Göbel, Stefan and Do, Ellen Yi-Luen and Clua, Esteban and Hauge, Jannicke Baalsrud
Creators: Caserman, Polona and Martinussen, Michelle and Göbel, Stefan
Title: Effects of End-to-end Latency on User Experience and Performance in Immersive Virtual Reality Applications
Language: English
Abstract:

Immersive virtual reality (IVR) offers an opportunity to immerse oneself into a virtual world and experience an exciting adventure. However, latency between a user's movement and visual feedback has a big impact on user experience and performance. In this paper, we explore the effect of increased end-to-end latency in IVR applications by conducting a user study. Firstly, in the searching task, we analyze cybersickness level based on simulator sickness questionnaire. Secondly, in the reaching task, we measure the user performance by tracking the time they need to reach a target and the error they make during the execution. Lastly, in the embodiment task, we measure the sense of body ownership, agency, presence, and latency perception when only one body side is impaired by latency. We apply the Friedman test with Conover's test of multiple comparisons as a post-hoc test on all dependent variables to find significant results. Results show that the end-to-end latency above 63Â ms induces significant cybersickness symptoms. In addition, user performance decreases with increasing delay and with end-to-end latency above 69Â ms, the users need significantly longer to complete the task. Results also show that end-to-end latency affects body ownership significant later, namely, not until 101Â ms.

Divisions: 18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute of Computer Engineering
18 Department of Electrical Engineering and Information Technology > Institute of Computer Engineering > Multimedia Communications
Event Title: ICEC-JCSG 2019
Event Location: Arequipa, Peru
Event Dates: 11.-15. November, 2019
Date Deposited: 06 Jan 2020 13:43
DOI: 10.1007/978-3-030-34644-7
Official URL: ftp://ftp.kom.tu-darmstadt.de/papers/CMG19.pdf
Additional Information:

First IFIP TC 14 Joint International Conference on Entertainment Computing and Serious Games, ICEC-JCSG 2019, held in Arequipa, Peru, in November 2019.

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