Biomechanical characterization of the stretch reflex activity as an approach to spasticity measurement and modeling-a pilot study Export

@inproceedings{citeulike:437775, abstract = {Spasticity is a clinical condition that may develop in people with central nervous system injuries. It is believed that spasticity results from changes in the excitability of the stretch reflex pathways manifesting clinically as a velocity dependent increase in resistance to passive movement (RTPM) and exaggerated tendon jerks. A biomechanical device was designed to provide a 90 ms torque controlled stretch to the biceps brachii. The stretch reflex response was recorded using surface electromyography and angular displacement with a potentiometer. A pilot study was carried out in four stroke and one non-impaired volunteers. Four different magnitudes of torque were applied to the elbow. Stretch reflex characterisation was done on EMG data collected 150 ms before and to complete 450 ms after the perturbation. The outcome measures were the range of movement, the amplitude of the rectified reflex response and, the latency, rise time and duration of the smoothed reflex response. The reflex in the stroke patients was not significantly different from normals (p>0.10). The mechanical model developed suggest that changes in reflex excitability may not necessarily contribute to joint stiffness (r/sup 2/>0.9).}, author = {Salazar-Torres, J. and Pandyan, A. D. and Price, C. I. M. and Davidson, R. I. and Barnes, M. P. and Johnson, G. R.}, citeulike-article-id = {437775}, citeulike-linkout-0 = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1279622}, comment = {Characterises spasticity about elbow joint - gives values for damping and stiffness}, journal = {Engineering in Medicine and Biology Society, 2003. Proceedings of the 25th Annual International Conference of the IEEE}, keywords = {arm, elbow, modelling, phd}, pages = {1491--1494 Vol.2}, posted-at = {2005-12-14 14:45:59}, priority = {0}, title = {Biomechanical characterization of the stretch reflex activity as an approach to spasticity measurement and modeling-a pilot study}, url = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1279622}, volume = {2}, year = {2003} }

TY - CONF ID - citeulike:437775 L3 - citeulike-article-id:437775 N2 - Spasticity is a clinical condition that may develop in people with central nervous system injuries. It is believed that spasticity results from changes in the excitability of the stretch reflex pathways manifesting clinically as a velocity dependent increase in resistance to passive movement (RTPM) and exaggerated tendon jerks. A biomechanical device was designed to provide a 90 ms torque controlled stretch to the biceps brachii. The stretch reflex response was recorded using surface electromyography and angular displacement with a potentiometer. A pilot study was carried out in four stroke and one non-impaired volunteers. Four different magnitudes of torque were applied to the elbow. Stretch reflex characterisation was done on EMG data collected 150 ms before and to complete 450 ms after the perturbation. The outcome measures were the range of movement, the amplitude of the rectified reflex response and, the latency, rise time and duration of the smoothed reflex response. The reflex in the stroke patients was not significantly different from normals (p>0.10). The mechanical model developed suggest that changes in reflex excitability may not necessarily contribute to joint stiffness (r/sup 2/>0.9). JF - Engineering in Medicine and Biology Society, 2003. Proceedings of the 25th Annual International Conference of the IEEE EP - 1494 Vol.2 TI - Biomechanical characterization of the stretch reflex activity as an approach to spasticity measurement and modeling-a pilot study VL - 2 SP - 1491 KW - arm KW - elbow KW - modelling KW - phd N1 - Characterises spasticity about elbow joint - gives values for damping and stiffness AU - Salazar-Torres, J AU - Pandyan, AD AU - Price, CIM AU - Davidson, RI AU - Barnes, MP AU - Johnson, GR PY - 2003/// UR - http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1279622 ER -