A CALCULATION OF THE MAGNETIC-FIELD OF A NERVE ACTION-POTENTIAL
A CALCULATION OF THE MAGNETIC-FIELD OF A NERVE ACTION-POTENTIAL
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DOI：
10.1016/s0006-3495(80)85012-0
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发表时间：
1980-01-01
影响因子：
3.4
通讯作者：
WIKSWO, JP
中科院分区：
文献类型：
--
作者：
SWINNEY, KR;WIKSWO, JP
利用跨膜电位数据计算孤立轴突外的磁场，以指定拉普拉斯方程解的边界条件。膜内电流对磁场的贡献比外电流大2个数量级。膜内电流的贡献可以忽略不计。波形计算的小龙虾的外侧轴突和青蛙坐骨神经的测量之间的比较。在神经外测量的磁场可以用来确定它们的内部电流，而不刺穿神经膜。
The magnetic field outside an isolated axon is calculated using transmembrane potential data to specify the boundary conditions to a solution of Laplace''s equation. The contribution to the magnetic field from the current inside the membrane is 2 orders of magnitude larger than that from the external current. The contribution from current within the membrane is negligible. Comparisons are made between waveforms calculated for a crayfish lateral axon and those measured for a frog sciatic nerve. The magnetic field measured outside nerves can be used to determine their internal current without puncturing the nerve membrane.