Wang J Z
Department of Physics, New York University, NY 10003.
IEEE Trans Biomed Eng. 1993 Apr;40(4):387-96. doi: 10.1109/10.222331.
This paper extends the minimum-norm least-squares inverse approach to a local spherical model for the conductivity geometry of the human head. In simulations of cortical activity of the human brain, the magnetic field pattern across the scalp is interpreted with prior knowledge of anatomy, and the properties of intraneuronal current flow to yield a unique magnetic source image across a portion of cerebral cortex. Influences on the quality of magnetic source images from the noise in measurements, the position error in determining the image surface, and the number of sensors are evaluated in detail.
本文将最小范数最小二乘逆方法扩展到用于人类头部电导率几何结构的局部球面模型。在对人类大脑皮层活动的模拟中，利用解剖学的先验知识以及神经元内电流流动的特性来解释头皮上的磁场模式，从而在部分大脑皮层上生成唯一的磁源图像。详细评估了测量噪声、确定图像表面时的位置误差以及传感器数量对磁源图像质量的影响。
