Virtual reality to maximize function for hand and arm rehabilitation: Exploration of neural mechanisms

Alma S. Merians, Eugene Tunik, Sergei V. Adamovich

Research output: Chapter in Book/Report/Conference proceedingConference contribution

40 Scopus citations

Abstract

Stroke patients report hand function as the most disabling motor deficit. Current evidence shows that learning new motor skills is essential for inducing functional neuroplasticity and functional recovery. Adaptive training paradigms that continually and interactively move a motor outcome closer to the targeted skill are important to motor recovery. Computerized virtual reality simulations when interfaced with robots, movement tracking and sensing glove systems, are particularly adaptable, allowing for online and offline modifications of task based activities using the participant's current performance and success rate. We have developed a second generation system that can exercise the hand and the arm together or in isolation and provide for both unilateral and bilateral hand and arm activities in three-dimensional space. We demonstrate that by providing haptic assistance for the hand and arm and adaptive anti-gravity support, the system can accommodate patients with lower level impairments. We hypothesize that combining training in virtual environments (VE) with observation of motor actions can bring additional benefits. We present a proof of concept of a novel system that integrates interactive VE with functional neuroimaging to address this issue. Three components of this system are synchronized, the presentation of the visual display of the virtual hands, the collection of fMRI images and the collection of hand joint angles from the instrumented gloves. We show that interactive VEs can facilitate activation of brain areas during training by providing appropriately modified visual feedback. We predict that visual augmentation can become a tool to facilitate functional neuroplasticity.

Original languageEnglish (US)
Title of host publicationAdvanced Technologies in Rehabilitation
Subtitle of host publicationEmpowering Cognitive, Physical, Social and Communicative Skills Through Virtual Reality, Robots, Wearable Systems and Brain-Computer Interfaces
PublisherIOS Press
Pages109-125
Number of pages17
ISBN (Print)9781607500186
DOIs
StatePublished - 2009

Publication series

NameStudies in Health Technology and Informatics
Volume145
ISSN (Print)0926-9630
ISSN (Electronic)1879-8365

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering
  • Health Informatics
  • Health Information Management

Keywords

  • Cerebral palsy
  • Haptics
  • Stroke
  • Virtual environment
  • fMRI

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