Regional head tissue conductivity estimation for improved EEG analysis

TC Ferree, KJ Eriksen… - IEEE Transactions on …, 2000 - ieeexplore.ieee.org
The authors develop a method for estimating regional head tissue conductivities in vivo, by
injecting small (1-10/spl mu/A) electric currents into the scalp, and measuring the potentials …

Improved EEG source analysis using low‐resolution conductivity estimation in a four‐compartment finite element head model

S Lew, CH Wolters, A Anwander, S Makeig… - Human brain …, 2009 - Wiley Online Library
Bioelectric source analysis in the human brain from scalp electroencephalography (EEG)
signals is sensitive to geometry and conductivity properties of the different head tissues. We …

Estimating brain conductivities and dipole source signals with EEG arrays

D Gutiérrez, A Nehorai… - IEEE transactions on …, 2004 - ieeexplore.ieee.org
Techniques based on electroencephalography (EEG) measure the electric potentials on the
scalp and process them to infer the location, distribution, and intensity of underlying neural …

A global sensitivity analysis of three-and four-layer EEG conductivity models

S Vallaghé, M Clerc - IEEE Transactions on Biomedical …, 2008 - ieeexplore.ieee.org
The accuracy of forward models for EEG partly depends on the conductivity values of the
head tissues. Yet, the influence of the conductivities on the model output is still not well …

Simultaneous head tissue conductivity and EEG source location estimation

ZA Acar, CE Acar, S Makeig - NeuroImage, 2016 - Elsevier
Accurate electroencephalographic (EEG) source localization requires an electrical head
model incorporating accurate geometries and conductivity values for the major head tissues …

Spatial sampling and filtering of EEG with spline laplacians to estimate cortical potentials

R Srinivasan, PL Nunez, DM Tucker, RB Silberstein… - Brain topography, 1996 - Springer
The electroencephalogram (EEG) is recorded by sensors physically separated from the
cortex by resistive skull tissue that smooths the potential field recorded at the scalp. This …

An efficient algorithm for computing multishell spherical volume conductor models in EEG dipole source localization

M Sun - IEEE transactions on biomedical engineering, 1997 - ieeexplore.ieee.org
Computationally localizing electrical current sources of the electroencephalographic signal
requires a volume conductor model which relates theoretical scalp potentials to the dipolar …

Determination of head conductivity frequency response in vivo with optimized EIT-EEG

J Dabek, K Kalogianni, E Rotgans, FCT van der Helm… - Neuroimage, 2016 - Elsevier
Electroencephalography (EEG) benefits from accurate head models. Dipole source
modelling errors can be reduced from over 1 cm to a few millimetres by replacing generic …

Artifactually high coherences result from using spherical spline computation of scalp current density

CA Biggins, G Fein, J Raz, A Amir - Electroencephalography and clinical …, 1991 - Elsevier
Coherence computed from common reference montages inextricably confounds true
coherence with power and phase at the recording and reference electrodes. Direct …

A computer simulation study of cortical imaging from scalp potentials

Y Wang, B He - IEEE Transactions on Biomedical Engineering, 1998 - ieeexplore.ieee.org
Computer simulation studies were conducted to test the feasibility of imaging brain electrical
activity from the scalp electroencephalograms. The inhomogeneous three-concentric-sphere …