A computer simulation study of cortical imaging from scalp potentials

Yunhua Wang; Bin He

doi:10.1109/10.678607

A computer simulation study of cortical imaging from scalp potentials

Yunhua Wang, Bin He

Biomedical Engineering

Research output: Contribution to journal › Article › peer-review

80 Scopus citations

Abstract

In this paper, computer simulation studies were conducted to test the feasibility of imaging brain electrical activity from the scalp electroencephalograms. The inhomogeneous three-concentric-sphere head model was used to represent the head volume conductor. Closed spherical dipole layers, consisting of several thousand uniformly distributed dipoles, were used to reconstruct the cortical potential maps corresponding to neuronal sources located inside the brain. Simulation results indicate that the present procedure can image both cortical and deep sources, and for the cortical sources, a spatial resolution as high as 1.2 cm can be achieved.

Original language	English (US)
Pages (from-to)	724-735
Number of pages	12
Journal	IEEE Transactions on Biomedical Engineering
Volume	45
Issue number	6
DOIs	https://doi.org/10.1109/10.678607
State	Published - Jun 1998

Bibliographical note

Funding Information:
Manuscript received May 28, 1996; revised January 20, 1998. This work was supported in part by a grant from the Whitaker Foundation and a grant from the University of Illinois at Chicago Campus Research Board. Asterisk indicates corresponding author.

Keywords

Dipole layer
EEG
Functional imaging
Head model
Inverse problem

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10.1109/10.678607

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N2 - In this paper, computer simulation studies were conducted to test the feasibility of imaging brain electrical activity from the scalp electroencephalograms. The inhomogeneous three-concentric-sphere head model was used to represent the head volume conductor. Closed spherical dipole layers, consisting of several thousand uniformly distributed dipoles, were used to reconstruct the cortical potential maps corresponding to neuronal sources located inside the brain. Simulation results indicate that the present procedure can image both cortical and deep sources, and for the cortical sources, a spatial resolution as high as 1.2 cm can be achieved.

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KW - Head model

KW - Inverse problem

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A computer simulation study of cortical imaging from scalp potentials

Abstract

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Keywords

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