| 时谐偶极子在介质球头模型中的电位分布 |
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| 引用本文： | 段晓勇,彭仕政,李龙武,张玉强,卫高峰,刘晓春.时谐偶极子在介质球头模型中的电位分布[J].电子科技大学学报(社会科学版),2008(1). |
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| 作者姓名： | 段晓勇 彭仕政 李龙武 张玉强 卫高峰 刘晓春 |
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| 作者单位： | 贵州大学理学院 贵阳550025 |
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| 基金项目： | 贵州省自然科学基金(20052005) |
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| 摘 要： | 考虑到脑电源的时谐性和头的电容效应,在电准静态近似下,建立了时谐等效电流偶极子模型;给出了其在均匀无限介质中和均匀介质球中的电位表达式;并正向计算了脑电源在非均匀各向同性三层同心介质球壳中的电位分布。最后讨论了时谐性和电容率对电位分布的影响。理论计算结果表明时谐性和电容率对电位分布确实有影响。
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| 关 键 词： | 介质球 电准静态 电容率 时谐等效电流偶极子 时谐因子 |
Potential Distribution in a Dielectric Sphere Model Produced by a Time-Harmonic Equivalent Current Dipole |
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| DUAN Xiao-yong,PENG Shi-zheng,LI Long-wu,ZHANG Yu-qiang,WEI Gao-feng,LIU Xiao-chun.Potential Distribution in a Dielectric Sphere Model Produced by a Time-Harmonic Equivalent Current Dipole[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2008(1). |
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| Authors: | DUAN Xiao-yong PENG Shi-zheng LI Long-wu ZHANG Yu-qiang WEI Gao-feng LIU Xiao-chun |
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| Abstract: | A model of EEG source is set up as a time-harmonic equivalent current dipole model which deals with the problem concerning the capacitance effect.The expressions of potential distribution in homogeneous infinite dielectric and homogeneous dielectric sphere on the electroquasistatic condition is given and the potential distribution in a three-layer inhomogeneous isotropic concentric sphere produced by the model is computed.The effects about potential distribution by time-harmonic character and permittivity are discussed.The theoretical calculation shows that potential distribution is effected by time-harmonic character and permittivity. |
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| Keywords: | dielectric sphere electroquasistatic permittivity time-harmonic equivalent current dipole time-harmonic factor |
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