HOW WELL DOES A 3-SPHERE MODEL PREDICT POSITIONS OF DIPOLES IN A REALISTICALLY SHAPED HEAD

被引：118

作者：

ROTH, BJ

BALISH, M

GORBACH, A

SATO, S

机构：

[1] GEORGETOWN UNIV HOSP,DEPT NEUROL,WASHINGTON,DC 20007

[2] NINCDS,EPILEPSY RES BRANCH,CLIN NEUROPHYSIOL UNIT,BETHESDA,MD 20892

来源：

ELECTROENCEPHALOGRAPHY AND CLINICAL NEUROPHYSIOLOGY | 1993年 / 87卷 / 04期

基金：

美国国家卫生研究院;

关键词：

EEG; DIPOLE; LOCALIZATION; REALISTICALLY SHAPED HEAD MODEL; 3-SPHERE MODEL;

D O I：

10.1016/0013-4694(93)90017-P

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The electrical potential produced by a dipole in the temporal or frontal lobe was calculated for a realistically shaped scalp, skull, and brain. This potential distribution was then used with a 3-sphere model to predict the position, orientation, and strength of the dipole source. The original and predicted dipole positions differed by an average of 1.97 cm, with a difference of more than 4 cm in some cases. Control calculations demonstrated that this difference was not caused by numerical artifacts in the computation, but instead was due to a true difference between the 3-sphere and realistically shaped head models.

引用

页码：175 / 184

页数：10

共 19 条

[1] MEG VERSUS EEG LOCALIZATION TEST USING IMPLANTED SOURCES IN THE HUMAN BRAIN [J].