METHOD TO REDUCE BLUR DISTORTION FROM EEGS USING A REALISTIC HEAD MODEL

被引：106

作者：

LE, J ^{[1
]}

GEVINS, A ^{[1
]}

机构：

[1] SAM TECHNOL,SAN FRANCISCO,CA 94107

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 1993年 / 40卷 / 06期

关键词：

D O I：

10.1109/10.237671

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

A mathematical procedure, which we call ''Deblurring,'' was developed to reduce spatial blur distortion of scalp-recorded brain potentials due to transmission through the skull and other tissues. Deblurring estimates potentials at the superficial cerebral cortical surface from EEG's recorded at the scalp using a finite element model of each subject's scalp, skull and cortical surface constructed from their magnetic resonance images (MRI's). Simulations indicate that Deblurring is numerically stable, while a comparison of deblurred data with a direct cortical recording from a neurosurgery patient suggests that the procedure is valid. Application of Deblurring to somatosensory evoked potential data recorded at 124 scalp sites suggests that the method produces a dramatic improvement in spatial detail, and merits further development.

引用

页码：517 / 528

页数：12

共 43 条

[1] LOCATION OF SOURCES OF EVOKED SCALP POTENTIALS - CORRECTIONS FOR SKULL AND SCALP THICKNESSES [J].