A bi-planar coil system for nulling background magnetic fields in scalp mounted magnetoencephalography
Small, commercially-available Optically Pumped Magnetometers (OPMs) can be used to construct a wearable Magnetoencephalography (MEG) system that allows large head movements to be made during recording. The small dynamic range of these sensors however means that movement in the residual static magnet...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
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Elsevier
2018
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| Online Access: | https://eprints.nottingham.ac.uk/53007/ |
| _version_ | 1848798859142103040 |
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| author | Holmes, Niall Leggett, James Boto, Elena Roberts, Gillian Hill, Ryan M. Tierney, Tim M. Shah, Vishal Barnes, Gareth R. Brookes, Matthew J. Bowtell, Richard |
| author_facet | Holmes, Niall Leggett, James Boto, Elena Roberts, Gillian Hill, Ryan M. Tierney, Tim M. Shah, Vishal Barnes, Gareth R. Brookes, Matthew J. Bowtell, Richard |
| author_sort | Holmes, Niall |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Small, commercially-available Optically Pumped Magnetometers (OPMs) can be used to construct a wearable Magnetoencephalography (MEG) system that allows large head movements to be made during recording. The small dynamic range of these sensors however means that movement in the residual static magnetic field found inside typical Magnetically Shielded Rooms (MSR) can saturate the sensor outputs, rendering the data unusable. This problem can be ameliorated by using a set of electromagnetic coils to attenuate the spatially-varying remnant field. Here, an array of bi-planar coils, which produce an open and accessible scanning environment, were designed and constructed. The coils were designed using a harmonic minimisation method previously used for gradient coil design in Magnetic Resonance Imaging (MRI). Six coils were constructed to null |
| first_indexed | 2025-11-14T20:26:28Z |
| format | Article |
| id | nottingham-53007 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:26:28Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-530072020-05-04T19:46:15Z https://eprints.nottingham.ac.uk/53007/ A bi-planar coil system for nulling background magnetic fields in scalp mounted magnetoencephalography Holmes, Niall Leggett, James Boto, Elena Roberts, Gillian Hill, Ryan M. Tierney, Tim M. Shah, Vishal Barnes, Gareth R. Brookes, Matthew J. Bowtell, Richard Small, commercially-available Optically Pumped Magnetometers (OPMs) can be used to construct a wearable Magnetoencephalography (MEG) system that allows large head movements to be made during recording. The small dynamic range of these sensors however means that movement in the residual static magnetic field found inside typical Magnetically Shielded Rooms (MSR) can saturate the sensor outputs, rendering the data unusable. This problem can be ameliorated by using a set of electromagnetic coils to attenuate the spatially-varying remnant field. Here, an array of bi-planar coils, which produce an open and accessible scanning environment, were designed and constructed. The coils were designed using a harmonic minimisation method previously used for gradient coil design in Magnetic Resonance Imaging (MRI). Six coils were constructed to null Elsevier 2018-07-12 Article PeerReviewed Holmes, Niall, Leggett, James, Boto, Elena, Roberts, Gillian, Hill, Ryan M., Tierney, Tim M., Shah, Vishal, Barnes, Gareth R., Brookes, Matthew J. and Bowtell, Richard (2018) A bi-planar coil system for nulling background magnetic fields in scalp mounted magnetoencephalography. NeuroImage . ISSN 1095-9572 (In Press) |
| spellingShingle | Holmes, Niall Leggett, James Boto, Elena Roberts, Gillian Hill, Ryan M. Tierney, Tim M. Shah, Vishal Barnes, Gareth R. Brookes, Matthew J. Bowtell, Richard A bi-planar coil system for nulling background magnetic fields in scalp mounted magnetoencephalography |
| title | A bi-planar coil system for nulling background magnetic fields in scalp mounted magnetoencephalography |
| title_full | A bi-planar coil system for nulling background magnetic fields in scalp mounted magnetoencephalography |
| title_fullStr | A bi-planar coil system for nulling background magnetic fields in scalp mounted magnetoencephalography |
| title_full_unstemmed | A bi-planar coil system for nulling background magnetic fields in scalp mounted magnetoencephalography |
| title_short | A bi-planar coil system for nulling background magnetic fields in scalp mounted magnetoencephalography |
| title_sort | bi-planar coil system for nulling background magnetic fields in scalp mounted magnetoencephalography |
| url | https://eprints.nottingham.ac.uk/53007/ |