Authors:
Marianna Pizzo
;
Matteo Martini
;
Fabio Solari
and
Manuela Chessa
Affiliation:
Department of Informatics, Bioengineering, Robotics and Systems Engineering, University of Genoa, Genoa, Italy
Keyword(s):
Perspective Visualization, Orthographic Visualization, Reaching Task, Counting Task, Presence in VR, Usability in VR, Cognitive Load.
Abstract:
In fields like cognitive and physical rehabilitation, adopting immersive visualization devices can be unfeasible. In these cases, the main challenge is to develop Virtual Reality (VR) scenarios that still provide a strong sense of presence, usability, and user agency, even without full immersion. This paper explores a cognitive-motor dual-task in VR, consisting in counting and reaching, comparing three non-immersive visualization methods on a 2D screen (tracked perspective camera, fixed perspective camera, fixed orthographic camera) with the immersive experience provided by a head-mounted display. The comparison focused on factors like sense of presence, usability, cognitive load, and task accuracy. Results show, as expected, that immersive VR provides a higher sense of presence and better usability with respect to the non-immersive visualization methods. Unexpectedly, the implemented 2D visualization based on a tracked perspective camera seems not to be the best approximation of imm
ersive VR. Finally, the two fixed camera conditions showed no significant differences in performance based on the type of projection.
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