MAGNETIC SOURCE IMAGES DETERMINED BY A LEAD-FIELD ANALYSIS - THE UNIQUE MINIMUM-NORM LEAST-SQUARES ESTIMATION

被引：216

作者：

WANG, JZ

WILLIAMSON, SJ

KAUFMAN, L

机构：

[1] NYU,CTR NEURAL SCI,NEW YORK,NY 10003

[2] NYU,DEPT PSYCHOL,NEW YORK,NY 10003

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 1992年 / 39卷 / 07期

关键词：

D O I：

10.1109/10.142641

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The minimum norm least-squares approach based on lead field theory provides a unique inverse solution for a magnetic source image that is the best estimate in the least-squares sense. This has been applied to determine the source current distribution when the primary current is confined to a surface or set of surfaces. In model simulations of cortical activity of the human brain, the magnetic field pattern across the scalp is interpreted with prior knowledge of anatomy to yield a unique magnetic source image across a portion of cerebral cortex, without resort to an explicit source model.

引用

页码：665 / 675

页数：11

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