Magnetic field compensation coil design for magnetoencephalography

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 roo...

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Autores principales:	Hermann Kutschka, Christian F. Doeller, Jens Haueisen, Burkhard Maess
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0a31ea03137d439f8dcf56d808c6d8e1
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spelling	oai:doaj.org-article:0a31ea03137d439f8dcf56d808c6d8e12021-11-28T12:19:52ZMagnetic field compensation coil design for magnetoencephalography10.1038/s41598-021-01894-z2045-2322https://doaj.org/article/0a31ea03137d439f8dcf56d808c6d8e12021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01894-zhttps://doaj.org/toc/2045-2322Abstract 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.Hermann KutschkaChristian F. DoellerJens HaueisenBurkhard MaessNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hermann Kutschka Christian F. Doeller Jens Haueisen Burkhard Maess Magnetic field compensation coil design for magnetoencephalography
description	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.
format	article
author	Hermann Kutschka Christian F. Doeller Jens Haueisen Burkhard Maess
author_facet	Hermann Kutschka Christian F. Doeller Jens Haueisen Burkhard Maess
author_sort	Hermann Kutschka
title	Magnetic field compensation coil design for magnetoencephalography
title_short	Magnetic field compensation coil design for magnetoencephalography
title_full	Magnetic field compensation coil design for magnetoencephalography
title_fullStr	Magnetic field compensation coil design for magnetoencephalography
title_full_unstemmed	Magnetic field compensation coil design for magnetoencephalography
title_sort	magnetic field compensation coil design for magnetoencephalography
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/0a31ea03137d439f8dcf56d808c6d8e1
work_keys_str_mv	AT hermannkutschka magneticfieldcompensationcoildesignformagnetoencephalography AT christianfdoeller magneticfieldcompensationcoildesignformagnetoencephalography AT jenshaueisen magneticfieldcompensationcoildesignformagnetoencephalography AT burkhardmaess magneticfieldcompensationcoildesignformagnetoencephalography
_version_	1718407996325756928

Magnetic field compensation coil design for magnetoencephalography

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