Interlimb coordination evoked by unilateral mechanical perturbation during body-weight supported gait.
Interlimb coordination evoked by unilateral mechanical perturbation during body-weight supported gait.
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DOI：
10.1109/icorr.2011.5975513
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发表时间：
2011-01-01
期刊：
影响因子：
--
通讯作者：
Krebs, Hermano Igo
中科院分区：
文献类型：
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作者：
Artemiadis, Panagiotis K;Krebs, Hermano Igo
在运动过程中，运动策略可以快速补偿任何可能干扰前进的障碍或扰动。在这里，我们研究了在体重受到外部支撑且前庭反馈有限的情况下，肢体间通路对诱发肌肉激活模式的贡献。这些实验是使用一种用于步态治疗的新型设备进行的：麻省理工学院天行者。受试者的体重由下方马鞍状座椅支撑，胸部安全带用于提供躯干稳定性。八名神经健康的人被要求在麻省理工学院天行者上行走，而其分体带跑步机的一侧在脚跟着地之前或在站立过程中意外掉落。将报告腿部运动学。我们发现单侧扰动会引起对侧肢体的反应，这在运动学和神经肌肉水平上都可以观察到。大多数响应的延迟超过 100 毫秒，这表明存在脊髓上（即非局部）通路。
During locomotion, motor strategies can rapidly compensate for any obstruction or perturbation that could interfere with forward progression. Here we studied the contribution of interlimb pathways for evoking muscle activation patterns in the case where body weight is externally supported and vestibular feedback is limited. The experiments were conducted using a novel device intended for gait therapy: the MIT-Skywalker. The subject's body weight was supported by an underneath saddle-like seat, and a chest harness was used to provide stabilization of the torso. Eight neurologically healthy individuals were asked to walk on the MIT-Skywalker, while one side of its split belt treadmill was unexpectedly dropped either before heel-strike or during mid-stance. Leg kinematics will be reported. We found that unilateral perturbations evoked responses at the contralateral limb, which were observed in both kinematic and neuromuscular level. The latency of most responses exceeded 100 msec, which suggests a supraspinal (i.e. not local) pathway.