Visualizing simulated electrical fields from electroencephalography and transcranial electric brain stimulation: a comparative evaluation

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Publication Type pre-print
School or College <blank>
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Creator Dannhauer, Moritz
Other Author Eichelbaum, Sebastian; Hlawitschka, Mario; Brooks, Dana; Knösche, Thomas R.; Scheuermann, Gerik
Title Visualizing simulated electrical fields from electroencephalography and transcranial electric brain stimulation: a comparative evaluation
Date 2014-01-01
Description Electrical activity of neuronal populations is a crucial aspect of brain activity. This activity is not measured directly but recorded as electrical potential changes using head surface electrodes (electroencephalogram - EEG). Head surface electrodes can also be deployed to inject electrical currents in order to modulate brain activity (transcranial electric stimulation techniques) for therapeutic and neuroscientific purposes. In electroencephalography and noninvasive electric brain stimulation, electrical fields mediate between electrical signal sources and regions of interest (ROI). These fields can be very complicated in structure, and are influenced in a complex way by the conductivity profile of the human head. Visualization techniques play a central role to grasp the nature of those fields because such techniques allow for an effective conveyance of complex data and enable quick qualitative and quantitative assessments. The examination of volume conduction effects of particular head model parameterizations (e.g., skull thickness and layering), of brain anomalies (e.g., holes in the skull, tumors), location and extent of active brain areas (e.g., high concentrations of current densities) and around current injecting electrodes can be investigated using visualization. Here, we evaluate a number of widely used visualization techniques, based on either the potential distribution or on the current-flow. In particular, we focus on the extractability of quantitative and qualitative information from the obtained images, their effective integration of anatomical context information, and their interaction. We present illustrative examples from clinically and neuroscientifically relevant cases and discuss the pros and cons of the various visualization techniques.
Type Text
Publisher Elsevier
First Page 1
Last Page 18
Language eng
Bibliographic Citation Eichelbaum, S., Dannhauer, M., Hlawitschka, M., Brooks, D., Knösche, T. R., & Scheuermann, G. (2014). Visualizing simulated electrical fields from electroencephalography and transcranial electric brain stimulation: a comparative evaluation. NeuroImage, 1-18.
Rights Management (c) Elsevier ; Authors manuscrpt from Eichelbaum, S., Dannhauer, M., Hlawitschka, M., Brooks, D., Knösche, T. R., & Scheuermann, G. (2014). Visualizing simulated electrical fields from electroencephalography and transcranial electric brain stimulation: a comparative evaluation. NeuroImage. http://dx.doi.org/10.1016/j.neuroimage.2014.04.085
Format Medium application/pdf
Format Extent 7,887,221 bytes
Identifier uspace,18860
ARK ark:/87278/s6bz9g48
Setname ir_uspace
Date Created 2014-08-26
Date Modified 2014-10-15
ID 712662
Reference URL https://collections.lib.utah.edu/ark:/87278/s6bz9g48
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