Wednesday, February 19, 2014

Impairment in task-specific modulation of muscle coordination correlates with the severity of hand impairment following stroke

Not sure how this could possibly help me. I have no individual finger control. I think I somehow need to stop the damnable finger spasticity first.
http://search.naric.com/research/rehab/redesign_record.cfm?search=2&type=all&criteria=J67539&phrase=no&rec=123308
NARIC Accession Number: J67539.  What's this?
Author(s): Lee, Sang W.; Triandafilou, Kristen; Lock, Blair A.; Kamper, Derek G..
Project Number: H133F090018.
Publication Year: 2013.
Number of Pages: 18.
Abstract: Study examined post-stroke impairment in the ability to modulate muscle coordination patterns across tasks and its correlation with hand impairment. Fourteen stroke survivors, divided into a group of 8 subjects with severe hand impairment and a group of 6 subjects with moderate hand impairment according to their clinical functionality score, participated in the experiment. Another four neurologically intact subjects participated in the experiment to serve as a point of comparison. Activation patterns of nine hand and wrist muscles were recorded using surface electromyography while the subjects performed six isometric tasks. Patterns of covariation in muscle activations across tasks, i.e., muscle modules, were extracted from the muscle activation data. Results showed that the degree of reduction in the inter-task separation of the multi-muscle activation patterns was indicative of the clinical functionality score of the subjects (mean value = 26.2 for severely impaired subjects, 38.1 for moderately impaired subjects). The number of muscle modules extracted from the muscle activation patterns of a subject across six tasks, which represents the degree of motor complexity, was found to be correlated with the clinical functionality score. Greater impairment was also associated with a change in the muscle module patterns themselves, with greater muscle coactivation. A substantial reduction in the degrees-of-freedom of the multi-muscle coordination poststroke was apparent, and the extent of the reduction, assessed by the stated metrics, was strongly associated with the level of clinical impairment.

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