Effects of haptic supplementation on postural stability in unilateral vestibular loss patients.
The effects of haptic supplementation on postural stability during upright standing with vision were investigated in 11 unilateral vestibular loss (UVL) patients and compared to 12 age-marched controls. All the participants were instructed to grip a fixed or mobile stick. In the mobile conditions, the lower extremity of the stick was in contact with a slippery or a rough surface. Postural stability was assessed by the root mean square (RMS) and the velocity of the center of foot pressure (CoP) displacements in both antero-posterior (AP) and medio-lateral (ML) directions. Results showed that RMS was larger in UVL patients than in aged-matched participants in AP direction. However, in the mobile stick conditions, only the rough surface improved postural stability. In addition, RMS was more sensitive to haptic supplementation than CoP velocity. The present study confirms the importance of haptic information in the multi-sensory (re) weighting process underlying postural control in UVL patients.
Service ORL et Chirurgie de la Face et du Cou, APHM, CHU Nord, Chemin des Bourrely 13915 Marseille Cedex 20, France & LNIA, UMR 7260 Pôle 3C Case B St Charles, Aix Marseille Université, Marseille, France. Electronic address: laurence.demanze@univ-amu.fr.
L
L
Bernard-Demanze
Aix-Marseille Université, Institut des Sciences du Mouvement, UMR 7287, Marseille, France.
J J
JJ
Temprado
Service ORL et Chirurgie de la Face et du Cou, APHM, CHU Nord, Chemin des Bourrely 13915 Marseille Cedex 20, France & IFSTTAR UMR T24, Aix Marseille Université, Marseille, France.
M
M
Elzière
Aix-Marseille Université, Institut des Sciences du Mouvement, UMR 7287, Marseille, France.
I M
IM
Albertsen
Centre Gérontologique Départemental, 176 Avenue de Montolivet, 13012 Marseille, France.
F
F
Retornaz
Service ORL et Chirurgie de la Face et du Cou, APHM, CHU Nord, Chemin des Bourrely 13915 Marseille Cedex 20, France & IFSTTAR UMR T24, Aix Marseille Université, Marseille, France.
J P
JP
Lavieille
Service ORL et Chirurgie de la Face et du Cou, APHM, CHU Nord, Chemin des Bourrely 13915 Marseille Cedex 20, France & IFSTTAR UMR T24, Aix Marseille Université, Marseille, France.
A
A
Devèze
D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008297:Male; D008575:Meniere Disease / Q000503:physiopathology / Q000601:surgery; D008875:Middle Aged; D004856:Postural Balance; D011187:Posture; D011434:Proprioception; D014110:Touch; D015837:Vestibular Diseases / Q000503:physiopathology*; D014725:Vestibular Nerve / Q000503:physiopathology / Q000601:surgery; D014722:Vestibule, Labyrinth / Q000294:innervation / Q000503:physiopathology*
Haptic supplementation; Multi-sensory integration; Postural control; Unilateral vestibular loss patients