Journal
ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION
Volume 86, Issue 11, Pages 2218-2223Publisher
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.apmr.2005.04.015
Keywords
computer-assisted instruction; hemiplegia; magnetic resonance imaging; rehabilitation
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Objective: To investigate the effects of virtual reality (VR) on cortical reorganization and motor recovery. Design: Nonparametric pre- and posttest design with experimenter blinded. Setting: University medical center. Participants: Five patients with hemiparesis (age, 59.8+/-3.4y) were recruited. Intervention: Five patients received VR for 60 minutes a day, 5 times a week for 4 weeks. VR was designed to provide a virtual rehabilitation scene where the intensity of practice and sensory feedback could be systematically manipulated to provide the most appropriate, individualized motor retraining program. Main Outcome Measures: Cortical activation and associated motor recovery were measured before and after VR using functional magnetic resonance imaging and standardized motor tests, respectively. Nonparametric tests were used at P less than .05. Results: Prior to VR, the bilateral primary sensorimotor cortices (SM1s), contralesional premotor cortex, and contralesional or ipsilesional supplementary motor area were activated. After VR, the altered activations disappeared and predominantly the ipsilesional SM1 was activated (P<.05). Motor function was improved (P<.05). Conclusions: This is a novel demonstration of VR-induced neuroplastic changes and associated motor recovery in chronic stroke.
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