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  Simultaneous EEG and fMRI in the macaque monkey at 4.7 Tesla

Schmid, M., Oeltermann, A., Juchem, C., Smirnakis, S., & Logothetis, N. (2006). Simultaneous EEG and fMRI in the macaque monkey at 4.7 Tesla. Magnetic Resonance Imaging, 24(4), 335-342. doi:10.1016/j.mri.2005.12.024.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-D271-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-95A3-B
Genre: Journal Article

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Schmid, MC1, 2, Author              
Oeltermann, A1, 2, Author              
Juchem, C1, 2, Author              
Smirnakis, SM1, 2, Author              
Logothetis, NK1, 2, Author              
Affiliations:
1Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              

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 Abstract: Simultaneous electroencephalography (EEG)/functional magnetic resonance imaging (fMRI) acquisition can identify the brain networks involved in generating specific EEG patterns. Yet, the combination of these methodologies is hampered by strong artifacts that arise due to electromagnetic interference during magnetic resonance (MR) image acquisition. Here, we report corrections of the gradient-induced artifact in phantom measurements and in experiments with an awake behaving macaque monkey during fMRI acquisition at a magnetic field strength of 4.7 T. Ninety-one percent of the amplitude of a 10 956;V, 10 Hz phantom signal could successfully be recovered without phase distortions. Using this method, we were able to extract the monkey EEG from scalp recordings obtained during MR image acquisition. Visual evoked potentials could also be reliably identified. In conclusion, simultaneous EEG/fMRI acquisition is feasible in the macaque monkey preparation at 4.7 T and holds promise for investigating the neural processes that give rise to particular EEG patterns.

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 Dates: 2006-03
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1016/j.mri.2005.12.024
BibTex Citekey: 3825
 Degree: -

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Title: Magnetic Resonance Imaging
Source Genre: Journal
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Publ. Info: New York : Elsevier
Pages: - Volume / Issue: 24 (4) Sequence Number: - Start / End Page: 335 - 342 Identifier: ISSN: 0730-725X
CoNE: https://pure.mpg.de/cone/journals/resource/954925533026