Use of a priori information in estimating tissue resistivities--application to human data in vivo

Physiological Measurement
Uğur Baysal, Jens Haueisen

Abstract

Accurate resistivity values are necessary to construct reliable numerical models to solve forward/inverse problems in EEG and to localize activity centres in functional brain imaging. These models require accurate geometry and resistivity distribution. The geometry may be extracted from high resolution images. The resistivity distribution may be estimated by using a statistically constrained minimum mean squared error estimator algorithm that has been developed previously by Baysal and Eyüboğlu. In this study, the data are obtained by EEG and MEG sensors during SEF/SEP experiments that involve nine human subjects. The numerical model is realistic, subject-specific and the scalp, the skull and the brain resistivities are estimated. By performing nine different estimations, we found average resistivities of 3.183, 64.559 and 2.833 omega m for scalp, skull and brain, respectively, all under 9% standard deviation. The discrepancies between these results and other works are discussed in detail.

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Citations

Feb 27, 2010·Annals of Biomedical Engineering·Uğur Baysal, Gökhan Sengül
Jul 17, 2008·Brain Topography·Nicolas ChauveauBernard Rigaud
Jan 29, 2013·Brain Topography·Zeynep Akalin Acar, Scott Makeig
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Sep 5, 2013·Brain Topography·Victoria Montes-RestrepoHans Hallez
Aug 26, 2015·NeuroImage·Zeynep Akalin AcarScott Makeig
Aug 7, 2010·Human Brain Mapping·Moritz DannhauerThomas R Knösche
Jul 24, 2014·IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society·Zhi-De DengAngel V Peterchev
Mar 11, 2009·IEEE Transactions on Bio-medical Engineering·Sylvain Vallaghé, Maureen Clerc
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Sep 1, 2007·Physics in Medicine and Biology·Sergey M PlisDavid M Schmidt
May 3, 2019·The Journals of Gerontology. Series B, Psychological Sciences and Social Sciences·Oyetunde GbadeyanMarcus Meinzer
Jun 22, 2019·Neuromodulation : Journal of the International Neuromodulation Society·Adantchede L ZannouMarom Bikson
May 6, 2019·Brain Topography·Hannah McCannLeandro Beltrachini
Mar 31, 2019·Annals of Biomedical Engineering·Taweechai Ouypornkochagorn, Sairoong Ouypornkochagorn

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