fr
Article scientifique
Accès libre
Anglais

Increased Alpha-Rhythm Dynamic Range Promotes Recovery from Visuospatial Neglect: A Neurofeedback Study

Publié dansNeural plasticity, vol. 2017, p. 1-9
Date de publication2017
Résumé

Despite recent attempts to use electroencephalogram (EEG) neurofeedback (NFB) as a tool for rehabilitation of motor stroke, its potential for improving neurological impairments of attention—such as visuospatial neglect—remains underexplored. It is also unclear to what extent changes in cortical oscillations contribute to the pathophysiology of neglect, or its recovery. Utilizing EEG-NFB, we sought to causally manipulate alpha oscillations in 5 right-hemisphere stroke patients in order to explore their role in visuospatial neglect. Patients trained to reduce alpha oscillations from their right posterior parietal cortex (rPPC) for 20 minutes daily, over 6 days. Patients demonstrated successful NFB learning between training sessions, denoted by improved regulation of alpha oscillations from rPPC. We observed a significant negative correlation between visuospatial search deficits (i.e., cancellation test) and reestablishment of spontaneous alpha-rhythm dynamic range (i.e., its amplitude variability). Our findings support the use of NFB as a tool for investigating neuroplastic recovery after stroke and suggest reinstatement of intact parietal alpha oscillations as a promising target for reversing attentional deficits. Specifically, we demonstrate for the first time the feasibility of EEG-NFB in neglect patients and provide evidence that targeting alpha amplitude variability might constitute a valuable marker for clinical symptoms and self-regulation.

Mots-clés
  • Neurofeedback
  • Brain-computer interface
  • EEG
  • Stroke
  • Hemineglect
Citation (format ISO)
ROS, Tomas et al. Increased Alpha-Rhythm Dynamic Range Promotes Recovery from Visuospatial Neglect: A Neurofeedback Study. In: Neural plasticity, 2017, vol. 2017, p. 1–9. doi: 10.1155/2017/7407241
Fichiers principaux (1)
Article (Published version)
accessLevelPublic
Identifiants
ISSN du journal1687-5443
494vues
248téléchargements

Informations techniques

Création01/05/2017 11:27:00
Première validation01/05/2017 11:27:00
Heure de mise à jour15/03/2023 01:41:48
Changement de statut15/03/2023 01:41:48
Dernière indexation02/05/2024 19:21:15
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack