标题
建模的表面刺激正中神经
教师的导师(s)
凯瑟琳Polasek博士
文档类型
海报
事件日期
4-10-2015
文摘
幻肢疼痛,四肢疼痛或不适,是经历了50 - 80%的截肢者。我们假设引出一个“真正的”幻肢感觉;幻肢疼痛可能会减少或消除。先前的研究生产单电极放置在手肘感觉部分的手,面积增加而增加刺激。本研究的目的是开发一个计算机模型表面刺激,可以用来预测电极位置的影响,大小和配置在正中神经的激活。的三维有限元模型,使用ANSYS麦克斯韦肘了。模型是基于解剖学的胳膊,包括电性质的组织,包括骨骼、肌肉、血管、肌腱和神经。验证模型,两个x30 15毫米的电极应用于皮肤模型的匹配实验条件。运行仿真模型通过应用电压的电极。MATLAB和神经元被用来确定轴突了对于一个给定的一组参数。 In order to improve the accuracy of the model, differences between motor and sensory axons were investigated. Ion channels were added to the nodes and internodes of the axons, and parameters were varied in order to distinguish motor and sensory axons. The thresholds at different axon diameters were found for the two types of axons to determine which type was activated first. The results were then compared to experimental results. Future work will include modeling an array of electrodes and developing an algorithm to control the stimulation to obtain partial activation of the nerve.
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