This paper presents a tentative model of the role of perceptual-motor dynamics in the emergence of the feeling of presence. A new method allowing the measure of how gaze probes three-dimensional space in immersion is used to support this model. Fractal computations of gaze behavior are shown to be more effective than standard computations of eye movements in predicting presence.
More and more immersive environments are developed to provide support for learning or training purposes. Ecological validity of such environments is usually based on learning performance comparisons between virtual environments and their genuine counterparts. Little is known about learning processes occurring in immersive environments. A new technique is proposed for testing perceptual learning during virtual immersion. This methodology relies upon eye-tracking technologies to analyze gaze behavior recorded in relation to virtual objects' features and tasks' requirements. It is proposed that perceptual learning mechanisms engaged could be detected through eye movements. In this study, nine subjects performed perceptual learning tasks in virtual immersion. Results obtained indicated that perceptual learning influences gaze behavior dynamics. More precisely, analysis revealed that fixation number and variability in fixation duration varied with perceptual learning level. Such findings could contribute in shedding light on learning mechanisms as well as providing additional support for validating virtual learning environments.
RESUMECet article présente un nouveau paradigme en psychophysiologie des réponses sexuelles et perceptivomotrices. Ce paradigme est basé sur l'utilisation combinée d'une voûte immersive, de la pléthysmographie sexuelle, du suivi oculomoteur et d'un dispositif de ré-troaction psychophysiologique médiée.MOTS CLES : réalité virtuelle, voûte immersive, sexualité humaine, pléthysmographie, suivi oculomoteur, psychophysiologie, rétroaction biologique.
ABSTRACTThis paper presents a new paradigm in sexual and perceptual motor psychophysiology. This paradigm is based on the integration of an immersive vault, sexual plethysmography, eye tracking and a device of mediated biofeedback.
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