Jean-Dominique Gascuel

2012

Articles in peer-reviewed journal

Auteurs

Jean-Dominique Gascuel ; Henri Payno; Sébastien Schmerber; Olivier Martin

Titre

An Immersive Virtual Environment for Visuo-Vestibular Therapy

Résumé

The sense of equilibrium aggregates several interacting cues. On patients with vestibular loss, vision plays a major role. In this study, the goal is to propose a new immersive therapy based on 3D opto-kinetic stimulation. We propose to demonstrate that 3D monoscopic optical flows are an efficient tool to stimulate adaptive postural adjustment. We developed an immersive therapeutic platform that enables to tune the balance task difficulty by managing optic flow speed and gaze anchoring. METHODOLOGY: the immersive sessions proposed to vestibular areflexic patients are composed of a repetition of dynamic optic flows, with varying speed and presence or not of a gaze anchor. The balance adjustments are recorded by a force plate, and quantified by the length of the center of pressure trajectory. RESULTS: Preliminary analysis shows that (i) Patients report a strong immersion felling in the motion flow, triggering more intense motor response to "fight against fall" than in standard opto-kinetic protocols; (ii) An ANOVA factorial design shows a significant effect of flow speed, session number and gaze anchor impact. CONCLUSION: This study shows that 3D immersive stimulation removes essential limits of traditional opto-kinetic stimulators (limited 2D motions and remaining fixed background cues). Moreover, the immersive optic flow stimulation is an efficient tool to induce balance adaptive reactions in vestibular patients. Hence, such a platform appears to be a powerful therapeutic tool for training and relearning of balance control processes.

Détail

Journal of CyberTherapy & Rehabilitation, 2012, (accepted)

Accès au bibtex

Peer-reviewed conferences/proceedings

Auteurs

Jean-Dominique Gascuel; Henri Payno; Sebastien Schmerber; Olivier Martin

Titre

An Immersive Virtual Environment for Visuo-Vestibular Therapy

Résumé

The sense of equilibrium aggregates several interacting cues. On patients with vestibular loss, vision plays a major role. In this study, the goal is to propose a new immersive therapy based on 3D opto-kinetic stimulation. We propose to demonstrate that 3D monoscopic optical flows are an efficient tool to stimulate adaptive postural adjustment. We developed an immersive therapeutic platform that enables to tune the balance task difficulty by managing optic flow speed and gaze anchoring. METHODOLOGY: the immersive sessions proposed to vestibular areflexic patients are composed of a repetition of dynamic optic flows, with varying speed and presence or not of a gaze anchor. The balance adjustments are recorded by a force plate, and quantified by the length of the center of pressure trajectory. RESULTS: Preliminary analysis shows that (i) Patients report a strong immersion felling in the motion flow, triggering more intense motor response to "fight against fall" than in standard opto-kinetic protocols; (ii) An ANOVA factorial design shows a significant effect of flow speed, session number and gaze anchor impact. CONCLUSION: This study shows that 3D immersive stimulation removes essential limits of traditional opto-kinetic stimulators (limited 2D motions and remaining fixed background cues). Moreover, the immersive optic flow stimulation is an efficient tool to induce balance adaptive reactions in vestibular patients. Hence, such a platform appears to be a powerful therapeutic tool for training and relearning of balance control processes.

Détail

Brenda K. Wiederhold. 17th Annual CyberPsychology & CyberTherapy Conference (CYBER17), Sep 2012, Bruxelles, Belgium. IOS Press, Annual Review of Cybertherapy and Telemedicine 2012, Studies in Health Technology and Informatics series

Accès au bibtex

2009

Articles in peer-reviewed journal

Auteurs

Olivier Martin; Jean-Dominique Gascuel

Titre

Reactive Balance Control in Immersive Visual Flows: 2D vs 3D Virtual Stimuli

Résumé

The aim is to study the effects of 2D vs. 3D visual inputs on balance control. Ten subjects were fully immersed in virtual environment, using 10 different 2D/3D motion flow conditions. Analysis of visual and postural responses shows significant differences of reactivity in 3D versus 2D.

Détail

CyberPsychology & Behavior / CyberPsychology and Behavior, 2009, 144, pp. 208-210

Accès au bibtex

Auteurs

Olivier Martin; Jean-Dominique Gascuel

Titre

Reactive Balance Control in Immersive Visual Flows: 2D vs 3D Virtual Stimuli

Résumé

The aim is to study the effects of 2D vs. 3D visual inputs on balance control. Ten subjects were fully immersed in virtual environment, using 10 different 2D/3D motion flow conditions. Analysis of visual and postural responses shows significant differences of reactivity in 3D versus 2D.

Détail

CyberPsychology & Behavior / CyberPsychology and Behavior, 2009, 12 (5), pp. 581-673

Accès au texte intégral et bibtex

Peer-reviewed conferences/proceedings

Auteurs

Olivier Martin; Jean-Dominique Gascuel

Titre

Reactive Balance Control in Immersive Visual Flows: 2D vs 3D Virtual Stimuli

Résumé

The aim is to study the effects of 2D vs. 3D visual inputs on balance control. Ten subjects were fully immersed in virtual environment, using 10 different 2D/3D motion flow conditions. Analysis of visual and postural responses shows significant differences of reactivity in 3D versus 2D.

Détail

Annual CyberTherapy and CyberPsychology 2009 conference, Jun 2009, Lago Maggiore, Italy.

DOI

DOI : 10.3389/conf.neuro.14.2009.06.061

Accès au bibtex

Auteurs

Olivier Martin; Jean-Dominique Gascuel

Titre

Reactive Ocular and Balance Control in Immersive Visual Flows: 2D vs 3D Virtual Stimuli

Résumé

The control of gaze and balance strongly depend on the processing of visual cues. The aim of this study is to assess the effects of the dynamic 2D and 3D visual inputs on the oculomotor and balance reactive control. Thirteen subjects were immersed in a virtual environment using 10 different 2D/3D visual flow conditions. Analysis of eye movement and postural adjustments shows that 2D and 3D flows induce specific measurable behavioral responses.

Détail

Brenda K. Wiederhold and Giuseppe Riva. Annual Rewiew Of Cybertherapy and Cybermedicine 2009, Jun 2009, Lago Maggiore, Italy. IOS Press, Amsterdam, 144, pp. 208-210

Accès au texte intégral et bibtex