Anatomical 3D Modeling of Upper Limb for Bio-impedance based Hand Motion Interpretation
Anatomical 3D Modeling of Upper Limb for Bio-impedance based Hand Motion Interpretation
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DOI：
10.1109/fleps51544.2021.9469842
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发表时间：
2021-06
期刊：
影响因子：
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通讯作者：
E. Salkim;Yu Wu
中科院分区：
文献类型：
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作者：
E. Salkim;Yu Wu
生物阻抗分析（BIA）是一种评估身体成分的非侵入性方法，最近已被用于使用“蛮力”模式识别的手部运动解释。为了更好地促进BIA在人机界面中的应用，本文开发了一个解剖学上精确的3D模型，以实现良好的BIA记录策略。该模型是建立在瞬态有限元分析的基础上。它可用于经皮电刺激的精确定位，以提供上臂皮肤、脂肪、肌肉和骨骼层内的3D电流和电位分布，每个分布由其介电特性定义。利用该模型，可以研究电极放置对肌肉的影响，例如，织物和柔性电极。作为指导电极放置的概念证明，模拟了两种不同电极刺激布置的电位。结果表明，当电极向上臂移动时，电位降低。这可能与解剖层的电特性和电极到目标肌肉的距离有关。
Bio-impedance analysis (BIA) is a non-invasive way of assessing body compositions and has been recently used for hand motion interpretation using ‘brute force’ pattern recognition. To better promote BIA applications in human-machine interface, this paper develops an anatomically accurate 3D model towards a sound BIA recording strategy. The model is developed based on transient finite element analysis. It can be used for precise location of transcutaneous electrical stimulation to provide 3D current and potential distributions within the skin, fat, muscle, and bone layers of the upper arm, each defined by their dielectric properties. With the model, it is possible to investigate the impact of the electrode placement on the muscle when using, e.g., textile and flexible electrodes. As proof of concept for guiding the electrode placement, the electrical potential was simulated for two different electrode stimulation arrangements. The results showed that when the electrodes were shifted towards the upper arm, the electrical potential was reduced. This may be related to the anatomical layers' electric features and the distance of the electrode to the targeted muscle.