Multichannel Nerve Stimulation for Diverse Activation of Finger Flexors
Multichannel Nerve Stimulation for Diverse Activation of Finger Flexors
复制标题
多通道神经刺激可多样化激活手指屈肌
DOI：
10.1109/tnsre.2019.2947785
复制
发表时间：
2019
影响因子：
4.9
通讯作者：
Hu, Xiaogang
中科院分区：
文献类型：
--
作者：
Shin, Henry;Hu, Xiaogang
神经肌肉电刺激（NMES）是恢复神经损伤患者肌肉力量的常用方法，但恢复手部灵活性仍然是一个挑战。本研究旨在量化的手指运动的多样性引起的多通道神经stimulation technology.MethodsA 2 × 8刺激网格，放置在上臂沿着尺神经和正中神经，用于激活不同的手指屈肌之间的自动切换随机双极电极。记录每个手指的力以及内在和外在屈肌的高密度肌电图（HDEMG）。引起的手指的力量进行了分类，使用层次聚类，肌肉激活的空间模式的2D相关性也calculated.ResultsA范围广泛的运动模式被确定，包括多指和单指运动。此外，许多电极对引起类似的手指运动。肌肉激活模式表现出相似的和不同的空间模式，标志着激活redundancy.ConclusionThese结果揭示了多样性的诱发手指运动和肌肉激活。可以探索系统冗余以补偿由于疲劳或电极移位而导致的系统不稳定性。结果还可以使得能够开发刺激的自动校准。
ObjectiveNeuromuscular electrical stimulation (NMES) is a common approach to restore muscle strength of individuals with a neurological injury but restoring hand dexterity is still a challenge. This study sought to quantify the diversity of finger movements elicited by a multichannel nerve stimulation technique.MethodsA 2 × 8 stimulation grid, placed on the upper arm along the ulnar and median nerves, was used to activate different finger flexors by automatically switching between randomized bipolar electrodes. The forces from each individual finger as well as the high-density electromyogram (HDEMG) of the intrinsic and extrinsic flexors were recorded. The elicited finger forces were categorized using hierarchical clustering, and the 2D correlation of the spatial patterns of muscle activation was also calculated.ResultsA wide range of movement patterns were identified, including multi-finger and single-digit movements. Additionally, a number of electrode pairs elicited similar finger movements. The muscle activation patterns showed similar and distinct spatial patterns, signifying activation redundancy.ConclusionThese results revealed the diversity of elicitable finger movements and muscle activations. The system redundancy can be explored to compensate for system instability due to fatigue or electrode shift. The outcomes can also enable the development of an automatic calibration of the stimulation.
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DOI：
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