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Monday, May 23, 2016

Virtual Reality (VR) And Effects Of Manipulating Time

Time Perception Research & Manipulating Time Dilation Effects in VR (+Podcast) (~30 min.)

Voices of VR Podcast – Episode #363

Kent Bye | May 16, 2016

[Blogger's note: In the Podcast Gerd Bruder talks about how VR could allow students to perceive that a class of two hours took less time, perhaps as little as one hour.]
At Oculus Connect 2015, SVVR’s Karl Krantz told me that he accidentally spent 12 straight hours in VR and only thought that 3 hours had passed. I then started hearing a lot more time dilation stories from Owlchemy Labs’ Alex Schwartz and Devin Reimer as well as Fantastic Contraption’s Sarah Northway. These time perception underestimation anecdotes were both fascinating and really scary, and they found that some of the likely causes were achieving the ‘flow state’, having a deep sense of presence, and even the sense that ‘time flies when you’re having fun.’

'"The team tested these by creating a virtual setting in a bar-café where real-world participants could watch a virtual singer perform. Each participant, who could opt-in anonymously via a free app using Samsung Gear VR or Google Cardboard, would be given one of eight design conditions across three pairs: avatar vs. no avatar; singer engaging in eye contact vs. singer not engaging in eye contact; and physical induction, tested by having the user tap his or her hand to the music, vs. no bodily movement. Results were measured by having the participants fill out a questionnaire at the end assessing their feelings of virtual presence." Source:

<more at; related articles and links: (Humanizing VR Part 1: Could Virtual Reality Help Manipulate Time Perception? April 8, 2016. For Humanizing VR Part 2: Virtual Presence, Avatars and VR Applications, see: and (Who turned the clock? Effects of Manipulated Zeitgebers, Cognitive. Load and Immersion on Time Estimation. Christian Schatzschneider, Gerd Bruder and Frank Steinicke. [Abstract: Current virtual reality (VR) technologies have enormous potential to allow humans to experience computer-generated immersive virtual environments (IVEs). Many of these IVEs support near-natural audiovisual stimuli similar to the stimuli generated in our physical world. However, decades of VR research have been devoted to exploring and understand differences between perception and action in such IVEs compared to real-world perception and action. Although, significant differences have been revealed for spatiotemporal perception between IVEs and the physical world such as distance underestimation, there is still a scarcity of knowledge about the reasons for such perceptual discrepancies, in particular regarding the perception of temporal durations in IVEs. In this article, we explore the effects of manipulated zeitgebers, cognitive load and immersion on time estimation as yet unexplored factors of spatiotemporal perception in IVEs. We present an experiment in which we analyze human sensitivity to temporal durations while experiencing an immersive head-mounted display (HMD) environment. We found that manipulations of external zeitgebers caused by a natural or unnatural movement of the virtual sun had a significant effect on time judgments. Moreover, using the dualtask paradigm the results show that increased spatial and verbal cognitive load resulted in a significant shortening of judged time as well as an interaction with the external zeitgebers. Finally, we discuss the implications for the design of near-natural computergenerated virtual worlds.])>

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