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

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, 101, 513-530. doi:10.1016/j.neuroimage.2014.04.085.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-06ED-C Version Permalink: http://hdl.handle.net/21.11116/0000-0003-14EC-D
Genre: Journal Article

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 Creators:
Eichelbaum, Sebastian1, Author
Dannhauer, Moritz1, 2, Author
Hlawitschka, Mario3, Author
Brooks, Dana2, 4, Author
Knösche, Thomas R.5, Author              
Scheuermann, Gerik1, Author
Affiliations:
1Image and Signal Processing Group, University of Leipzig, Germany, ou_persistent22              
2Scientific Computing and Imaging Institute, University of Utah, Salt Lake City, UT, USA, ou_persistent22              
3Scientific Visualization, University of Leipzig, Germany, ou_persistent22              
4Department of Electrical and Computer Engineering, Northeastern University, Boston, MA, USA, ou_persistent22              
5Methods and Development Group MEG and EEG - Cortical Networks and Cognitive Functions, MPI for Human Cognitive and Brain Sciences, Max Planck Society, Leipzig, DE, ou_2205650              

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Free keywords: Visualization; Bioelectric Field; EEG; tDCS; Human Brain
 Abstract: 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.

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Language(s): eng - English
 Dates: 2014-04-302014-05-102014-11-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.neuroimage.2014.04.085
PMID: 24821532
PMC: PMC417235
Other: Epub 2014
 Degree: -

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Title: NeuroImage
Source Genre: Journal
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Publ. Info: Orlando, FL : Academic Press
Pages: - Volume / Issue: 101 Sequence Number: - Start / End Page: 513 - 530 Identifier: ISSN: 1053-8119
CoNE: /journals/resource/954922650166