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Triggermuscle: Exploring Weight Perception for Virtual Reality Through Adaptive Trigger Resistance in a Haptic VR Controller

  • It is challenging to provide users with a haptic weight sensation of virtual objects in VR since current consumer VR controllers and software-based approaches such as pseudo-haptics cannot render appropriate haptic stimuli. To overcome these limitations, we developed a haptic VR controller named Triggermuscle that adjusts its trigger resistance according to the weight of a virtual object. Therefore, users need to adapt their index finger force to grab objects of different virtual weights. Dynamic and continuous adjustment is enabled by a spring mechanism inside the casing of an HTC Vive controller. In two user studies, we explored the effect on weight perception and found large differences between participants for sensing change in trigger resistance and thus for discriminating virtual weights. The variations were easily distinguished and associated with weight by some participants while others did not notice them at all. We discuss possible limitations, confounding factors, how to overcome them in future research and the pros and cons of this novel technology.

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Document Type:Article
Author:Carolin Stellmacher, Michael Bonfert, Ernst Kruijff, Johannes Schöning
Parent Title (English):Frontiers in Virtual Reality
Article Number:754511
Publisher:Frontiers Media
Publishing Institution:Hochschule Bonn-Rhein-Sieg
Date of first publication:2022/01/14
Copyright:Copyright © 2022 Stellmacher, Bonfert, Kruijff and Schöning. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY).
Funding:This work was partially funded by a Lichtenberg Professorship of the Volkswagen Foundation as well as the BMBF project InviDas (16SV853).
Keyword:adaptive trigger; controller design; haptics; psychophysics; virtual reality; weight perception
Departments, institutes and facilities:Fachbereich Informatik
Institute of Visual Computing (IVC)
Dewey Decimal Classification (DDC):0 Informatik, Informationswissenschaft, allgemeine Werke / 00 Informatik, Wissen, Systeme / 006 Spezielle Computerverfahren
Entry in this database:2022/01/14
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International