Journal
JOURNAL OF REHABILITATION RESEARCH AND DEVELOPMENT
Volume 43, Issue 5, Pages 643-655Publisher
JOURNAL REHAB RES & DEV
DOI: 10.1682/JRRD.2005.05.0088
Keywords
adaptation; control; cortex; force fields; haptics; hemiparesis; human; human-machine interface; impairment; lesion; motor learning; rehabilitation; robots; stroke; teaching
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Funding
- NICHD NIH HHS [R24 HD39627, F32HD08658] Funding Source: Medline
- NINDS NIH HHS [5 R01 NS 35673] Funding Source: Medline
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We present an initial test of a technique for retraining reaching skills in patients with poststroke hemiparesis, in which errors are temporarily magnified to encourage learning and compensation. Individuals with poststroke hemiparesis held a horizontal plane robotic manipulandum that could exert a variety of forces while recording patients' movements. We measured how well the patients recovered movement straightness in a single visit to the laboratory (similar to 3 h). Following training, we returned forces to zero for an additional 50 movements to discern if aftereffects lasted. We found that all subjects showed immediate benefit from the training, although 3 of the 10 subjects did not retain these benefits for the remainder of the experiment. We discuss how these approaches demonstrate great potential for rehabilitation tools that augment error to facilitate functional recovery.
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