Action-perception patterns in virtual ball bouncing: Combating system latency and tracking functional validity

How can we evaluate the spatio-temporal performance of virtual environments (VE) for research use? Here we show that end-to-end latency (ETEL) of VE can strongly damage users’ perceptual and perceptuo-motor behaviors and that it can be considered to be the key factor for evaluating face and function...

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Bibliographic Details
Published in:Journal of neuroscience methods 2008-03, Vol.169 (1), p.255-266
Main Authors: Morice, Antoine H.P., Siegler, Isabelle A., Bardy, Benoît G.
Format: Article
Language:English
Subjects:
Adult
Ball-bouncing
Brain - physiology
Cognition - physiology
Cognitive science
Computer Science
Cues
End-to-end latency
Female
Graphics
Humans
Illusions - physiology
Life Sciences
Male
Motion Perception - physiology
Neurons and Cognition
Neuropsychological Tests
Neuroscience
Perception-action coupling
Photic Stimulation - methods
Psychology
Psychology and behavior
Psychomotor Performance - physiology
Psychophysics - methods
Reaction Time - physiology
Sensory rearrangement
Space Perception - physiology
User-Computer Interface
Virtual reality
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Summary:How can we evaluate the spatio-temporal performance of virtual environments (VE) for research use? Here we show that end-to-end latency (ETEL) of VE can strongly damage users’ perceptual and perceptuo-motor behaviors and that it can be considered to be the key factor for evaluating face and functional fidelity of a VE. We used a virtual ball-bouncing task as a paradigmatic example. Ball bouncing is known to exhibit attractive and repelling states whose localization in the racket cycle is sufficiently thin to be changed by small variations of ETEL. We first present a simple test-bed to measure the intrinsic ETEL of research-related VE systems. We then report results of a psychophysical ball-bouncing experiment in which ETEL was manipulated. While face validity (i.e., subjective experience) was maintained with relatively high values, the results reveal that the perception-action behavior (performance) was damaged with smaller ETEL values. These results call for action-perception variables in order to test the fidelity of VE systems.
ISSN:0165-0270
1872-678X
DOI:10.1016/j.jneumeth.2007.11.020