Accéder directement au contenu Accéder directement à la navigation
Article dans une revue

New insight into Parkinson’s disease‐related impairment of the automatic control of upright stance

Abstract : Parkinson's disease (PD) affects the automatic control of body movements. In our study, we tested PD-related impairments in automatic postural control in quiet upright stance. Twenty PD patients (mean age: 60 ± 8 years; Hoehn and Yahr: 2.00 ± 0.32, on-drug) and twenty age-matched controls (61 ± 7 years) were recruited. We studied interrelations between center-of-pressure movements, body movements (head, neck, and lower back), eye movements and variability of pupil size. Participants performed two fixation tasks while standing, during which they looked at: (a) a cross surrounded by a white background; and (b) a cross surrounded by a structured visual background (images used: rooms in houses). PD patients exhibited stronger and weaker correlations between eye and center-of-pressure/body movement variables than age-matched controls in the white and structured fixation tasks, respectively. Partial correlations, controlling for variability of pupil size showed that PD patients used lower and greater attentional resources than age-matched controls to control their eye and center-of-pressure/body movements simultaneously in the white fixation and structured fixation tasks, respectively. In the white fixation task, PD patients used attentional resources to optimize visuomotor coupling between eye and body movements to control their posture. In the structured fixation task, the salient visual stimuli distracted PD patients’ attention and that possibly affected postural control by deteriorating the automatic visuomotor coupling. In contrast, age-matched controls were able to use surrounding visual background to improve the automatic coupling between eye and center-of-pressure movements to control their posture. These results suggest that cluttered environments may distract PD patients and deteriorate their postural control.
Type de document :
Article dans une revue
Liste complète des métadonnées

Littérature citée [69 références]  Voir  Masquer  Télécharger

https://hal.univ-lille.fr/hal-02992251
Contributeur : Lilloa Université de Lille <>
Soumis le : vendredi 6 novembre 2020 - 12:15:44
Dernière modification le : jeudi 19 novembre 2020 - 08:21:11

Fichier

 Accès restreint
Fichier visible le : 2021-06-19

Connectez-vous pour demander l'accès au fichier

Identifiants

Collections

Citation

Cédrick T. Bonnet, Arnaud Delval, Tarkeshwar Singh, Yann Kechabia, Luc Defebvre. New insight into Parkinson’s disease‐related impairment of the automatic control of upright stance. European Journal of Neuroscience, 2020, European Journal of Neuroscience, pp.1-12. ⟨10.1111/ejn.14870⟩. ⟨hal-02992251⟩

Partager

Métriques

Consultations de la notice

14