EMG Map for Designing the Electrode Shape for Functional Electrical Therapy of Upper Extremities
EMG Map for Designing the Electrode Shape for Functional Electrical Therapy of Upper Extremities
复制标题
用于设计上肢功能电疗电极形状的肌电图
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
I. Topalović
中科院分区：
文献类型：
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作者：
L. Popović;I. Topalović
使用表面电极通过电刺激实现功能性抓握是一项艰巨的任务。肌肉的神经支配来自尺神经、桡神经和正中神经。连接前臂各种肌肉的神经分支的解剖结构在个体之间存在显着差异。我们假设瘫痪手臂和非瘫痪手臂之间的解剖学差异很小。基于这一假设，我们开发了一种方法，其中阵列内的 24 个接触电极记录的健康手臂和瘫痪手臂之间的肌肉活动 (EMG) 差异定义了受影响前臂上要刺激的目标区域。我们使用特殊的电极，其中的磁性接触允许简单地更换刺激垫。检查者将磁接触点放置在肌电图差异最大的位置。刺激器向选定的电极垫提供异步刺激。我们通过测量关节角度和抓握力证明了该方法对中风患者有效。
Achieving the functional grasp by electrical stimulation using surface electrodes is a demanding task. The innervations of muscles come via ulnar, radial and median nerves. The anatomy of nerve branches connecting various muscles in the forearm differs significantly between individuals. We hypothesize that the anatomical differences between the paretic and nonparetic arms are minimal. Based on this assumption we developed a method where the differences of muscle activities (EMG) between the healthy and paretic arms recorded by the 24-contact electrode within an array define the target zones to be stimulated on the affected forearm. We used special electrode where magnetic contacts allow simple change of the stimulation pads. The examiner positions the magnetic contact on the pads where the EMG differences are maximal. The stimulator delivers asynchronous stimulation to the selected pads. We proved that the method is working in stroke patients by measuring joint angles and the grasping force.