Dipolar estimates of the cortical map.

Gundars Korats,Radu Ranta,Steven Le Cam,Valerie Louis-Dorr

EMBC（2014）

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摘要

Various methods based on anatomical or mathematical models have been developed to estimate cortical potentials. Among them, the most popular are the surface Laplacians (SL) and the Electrical Source Imaging (ESI) approaches. In this paper, we develop an informed method named dipolar cortical mapping (DCM), aiming to find a balance between ESI methods based on anatomical models and methods without strong anatomical priors, such as surface Laplacians. Our method only uses easily available information on the electrode position and is based on a physiologically parametrized family of interpolating functions. Simulation results show that DCM competes with previously proposed surface Laplacians and with the model based Minimum Norm Estimates (MNE) computed with a Boundary Element Model (BEM).

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关键词

cortical potential estimation,bioelectric potentials,interpolating functions,interpolation,neurophysiology,surface laplacians,biomedical electrodes,electroencephalography,medical signal processing,boundary-elements methods,cortical source mapping,physiological models,electrical source imaging approaches,boundary element model,dipolar cortical mapping,electrode position,eeg,model based minimum norm estimates,electrical source imaging

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