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  Magnetic field compensation coil design for magnetoencephalography

Kutschka, H., Doeller, C. F., Haueisen, J., & Maess, B. (2021). Magnetic field compensation coil design for magnetoencephalography. Scientific Reports, 11: 22650. doi:10.1038/s41598-021-01894-z.

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 Creators:
Kutschka, Hermann1, 2, Author              
Doeller, Christian F.3, 4, 5, Author              
Haueisen, Jens1, 6, Author
Maess, Burkhard7, Author              
Affiliations:
1Institute for Biomedical Engineering and Informatics, TU Ilmenau, Germany, ou_persistent22              
2Methods and Development Unit - MEG and Cortical Networks, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_2205650              
3Department Psychology (Doeller), MPI for Human Cognitive and Brain Sciences, Max Planck Society, Leipzig, DE, ou_2591710              
4Centre for Neural Computation (CoE), Kavli Institute, Norwegian University of Science and Technology, Trondheim, Norway, ou_persistent22              
5Institute of Psychology, University of Leipzig, Germany, ou_persistent22              
6Department of Neurology, Jena University Hospital, Germany, ou_persistent22              
7Methods and Development Group Brain Networks, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_2205650              

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Free keywords: Biomedical engineering; Electrical and electronic engineering; Engineering
 Abstract: While optically pumped magnetometers (OPMs) can be attached to the head of a person and allow for highly sensitive recordings of the human magnetoencephalogram (MEG), they are mostly limited to an operational range of approximately 5 nT. Consequently, even inside a magnetically shielded room (MSR), movements in the remnant magnetic field disable the OPMs. Active suppression of the remnant field utilizing compensation coils is therefore essential. We propose 8 compensation coils on 5 sides of a cube with a side length of approximately 2 m which were optimized for operation inside an MSR. Compared to previously built bi-planar compensation coils, the coils proposed in this report are more complex in geometry and achieved smaller errors for simulated compensation fields. The proposed coils will allow for larger head movements or smaller movement artifacts in future MEG experiments compared to existing coils.

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Language(s): eng - English
 Dates: 2021-06-032021-11-022021-11-22
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1038/s41598-021-01894-z
PMID: 34811388
 Degree: -

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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
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Pages: - Volume / Issue: 11 Sequence Number: 22650 Start / End Page: - Identifier: ISSN: 2045-2322
CoNE: https://pure.mpg.de/cone/journals/resource/2045-2322