MAGNETIC-FIELD EXCITATION OF PERIPHERAL-NERVES AND THE HEART - A COMPARISON OF THRESHOLDS
MAGNETIC-FIELD EXCITATION OF PERIPHERAL-NERVES AND THE HEART - A COMPARISON OF THRESHOLDS
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DOI：
10.1007/bf02446087
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发表时间：
1991-11-01
影响因子：
3.2
通讯作者：
REILLY, JP
中科院分区：
文献类型：
--
作者：
REILLY, JP
时变磁场理论上可以刺激心脏或周围神经。神经和心脏的相对兴奋阈值用人体躯干的椭球表示进行比较。相对磁阈值取决于神经和心脏组织的兴奋性、解剖特征的几何位置、刺激波形特征以及入射磁场的方向和空间分布。神经和心脏兴奋的最小电场阈值差别不大。然而，神经和心脏的磁阈值可能是不同的，因为与身体几何形状和兴奋性对刺激波形的依赖性有关的因素。
Time-varying magnetic fields can theoretically excite the heart or peripheral nerves. Relative excitation thresholds of nerve and heart are compared using ellipsoidal representations of the human torso. Relative magnetic thresholds depend on the excitability of nerve and cardiac tissue, the geometric positions of anatomical features, stimulus waveform features and the direction and spatial distribution of the incident magnetic field. Minimum electric field thresholds for excitation of nerve and heart do not differ greatly. Nevertheless, nerve and heart magnetic thresholds may be disparate because of factors related to body geometry and the dependence of excitability on the stimulus waveform.