Institut Régional de Formation aux Métiers de Rééducation et de Réadaptation des Pays de la Loire.
Centre de documentation
Détail de l'auteur
Auteur Anaïs Odin
Documents disponibles écrits par cet auteur
Faire une suggestion Affiner la recherche
Modulating the internal model of verticality by virtual reality and body-weight support walking: A pilot study / Anaïs Odin in Annals of physical and rehabilitation medicine, Vol. 61 n° 5 (September 2018)
[article] Modulating the internal model of verticality by virtual reality and body-weight support walking: A pilot study [texte imprimé] / Anaïs Odin, Auteur ; Dominique Faletto-Passy, Auteur ; Franck Assaban, Auteur . - 2018 . - p. 292-299.
Langues : Anglais (eng) Français (fre)
in Annals of physical and rehabilitation medicine > Vol. 61 n° 5 (September 2018) . - p. 292-299
Catégories : PHYSIOLOGIE
INFORMATION & COMMUNICATION
Tags : Verticality perception Sense of upright Body-weight support walking Virtual tilted room Virtual reality Modulation Lateropulsion Résumé : Background and objective: The study aimed at inducing a visual vertical (VV) bias by immersion in a virtual tilted room (VTR, visual cues), then testing the effect of 30% body-weight support walking (BWSW, somaesthetic cues) to correct this bias.
Methods: We included 20 healthy participants (median age 54 years; 12 females) who wore the Oculus-Rift® Head Mounted Display to produce the virtual reality and generate the VV. VV (8 trials) was tested at baseline, then in 3 postural conditions (walking, sitting and BWSW), by 2 visual conditions (darkness and VTR), according to a pseudo-randomized blocked design. The VTR was tilted 18° clockwise. Data for 3 participants with virtual reality sickness were discarded, and those for 17 participants underwent non-parametric statistical analysis by 2 main criteria: VV and head orientation.
Results: The VTR induced a pronounced tilt of the vertical toward the tilted side under the baseline condition (median 11.4° [Q1Q3 6.113.4]; P Conclusion: Being immersed in a tilted environment induces a powerful bias in verticality perception (11°). Contrary to our hypothesis, BWSW did not attenuate the effect induced by the VTR, probably because of the power of this effect. However, BWSW was the only postural condition able to suppress post-effects induced by the VTR, thereby leading to the head and VV oriented upright. BWSW may improve verticality representation, presumably by bringing augmented information about the direction of the Earth vertical. These findings represent an avenue for rehabilitation of patients with postural disorders caused by a wrong verticality representation. Technological improvements will be necessary to attenuate the virtual reality discomfort.
En ligne : http://www.em-consulte.com/produit/rehab Permalink : [article]