INTERPRETING MAGNETIC-FIELDS OF THE BRAIN - MINIMUM NORM ESTIMATES
INTERPRETING MAGNETIC-FIELDS OF THE BRAIN - MINIMUM NORM ESTIMATES
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DOI：
10.1007/bf02512476
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发表时间：
1994-01-01
影响因子：
3.2
通讯作者：
ILMONIEMI, RJ
中科院分区：
文献类型：
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作者：
HAMALAINEN, MS;ILMONIEMI, RJ
作者将估计理论应用于从测量的神经磁场中确定一次电流分布的问题。在这个过程中，除了它们在空间上被限制在某个区域之外，基本上没有对源电流做任何假设。仿真实验表明，所得结果能较好地描述电流的结构。通过增加测量的次数，可以使估计更加局部化。电流分布也可用作测量场模式的内插和外推。
The authors have applied estimation theory to the problem of determining primary current distributions from measured neuromagnetic fields. In this procedure, essentially nothing is assumed about the source currents, except that they are spatially restricted to a certain region. Simulation experiments show that the results can describe the structure of the current flow fairly well. By increasing the number of measurements, the estimate can be made more localised. The current distributions may be also used as an interpolation and extrapolation for the measured field patterns.