Kinematic features of arm and trunk movements in stroke patients and age-matched healthy controls during reaching in virtual and physical environments

Dario G. Liebermann, Sigal Berman, Mindy F. Levin, Harold P. Weingarden, Patrice L. Weiss

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

Motor performance of stroke patients and healthy individuals was compared in terms of selected kinematic features of arm and trunk movements while subjects reached for visual targets in virtual (VR) and physical (PH) environments. In PH, the targets were placed at an extended arm distance, while in VR comparably placed virtual targets were presented via GestureTek's IREX system. Our goal was to obtain further insights into research methods related to VR-based rehabilitation. Eight right-hemiparetic stroke patients (age =46-87 years) and 8 healthy adults (age =51-73 years) completed 84 reaching movements in VR and PH environments while seated. The results showed that arm and trunk movements differed in the two environments in patients and to a lesser extent in healthy individuals. Arm motion of patients became jerkier in VR, with larger paths and longer movement durations, and presented greater arm torsion (i.e., larger elbow rotations around the hand-shoulder axis). Interestingly, patients also showed a significant reduction of compensatory trunk movements during VR reaching. The findings indicate that when targets were perceived to be beyond hand reach, stroke patients may be less able to estimate 3D virtual target locations obtained from the 2D TV planar displays. This was not the case for healthy participants.

Original languageEnglish
Title of host publication2009 Virtual Rehabilitation International Conference, VR 2009
Pages179-184
Number of pages6
DOIs
StatePublished - 12 Nov 2009
Event2009 Virtual Rehabilitation International Conference, VR 2009 - Haifa, Israel
Duration: 29 Jun 20092 Jul 2009

Conference

Conference2009 Virtual Rehabilitation International Conference, VR 2009
Country/TerritoryIsrael
CityHaifa
Period29/06/092/07/09

Keywords

  • Arm and trunk kinematics
  • Physical environment
  • Reaching
  • Stroke rehabilitation
  • Virtual enviroment

ASJC Scopus subject areas

  • Artificial Intelligence
  • Software
  • Biomedical Engineering

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