Piovesan Davide, Casadio Maura, Morasso Pietro, Giannoni Psiche
Sensory Motor Performance Program at the Rehabilitation Institute of Chicago, Chicago, IL 60611, USA.
Annu Int Conf IEEE Eng Med Biol Soc. 2011;2011:8239-42. doi: 10.1109/IEMBS.2011.6092031.
Stroke survivors strongly rely on visual feedback to control their movements, since segmental reflexes are characterized by an inherent hyper-excitability. To test the effect of visual feedback on the modulation of arm stability we estimated the stiffness of the paretic arm in nine stroke survivors during robot mediated therapy, where subjects trained with and without vision. While several studies found a negligible effect in unimpaired individuals, our results highlighted a marked reduction of stroke survivors' arm stiffness in absence of visual feedback.
中风幸存者强烈依赖视觉反馈来控制他们的动作，因为节段性反射具有内在的过度兴奋性。为了测试视觉反馈对手臂稳定性调节的影响，我们在机器人辅助治疗期间估计了9名中风幸存者患侧手臂的刚度，在此过程中受试者分别在有视觉和无视觉的情况下进行训练。虽然几项研究发现视觉反馈对未受损个体的影响可忽略不计，但我们的结果表明，在没有视觉反馈的情况下，中风幸存者的手臂刚度显著降低。
