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Optimised hybrid shielding and magnetic field control for emerging quantum technologies (2021)
Conference Proceeding
Hobson, P. J., Packer, M., Holmes, N., Davis, A., Patel, P., Holmes, D., …Fromhold, T. M. (2021). Optimised hybrid shielding and magnetic field control for emerging quantum technologies. In M. J. Padgett, K. Bongs, A. Fedrizzi, & A. Politi (Eds.), Proceedings Volume 11881, Quantum Technology: Driving Commercialisation of an Enabling Science II. https://doi.org/10.1117/12.2598780

The accurate control of magnetic fields is a cornerstone of multiple emerging quantum technologies. These technologies often require passive high permeability magnetic shielding and internal active field-generating coils to create their own bespoke m... Read More about Optimised hybrid shielding and magnetic field control for emerging quantum technologies.

Practical real-time MEG-based neural interfacing with optically pumped magnetometers (2021)
Journal Article
Wittevrongel, B., Holmes, N., Boto, E., Hill, R., Rea, M., Libert, A., …Brookes, M. J. (2021). Practical real-time MEG-based neural interfacing with optically pumped magnetometers. BMC Biology, 19(1), Article 158. https://doi.org/10.1186/s12915-021-01073-6

Background: Brain-computer interfaces decode intentions directly from the human brain with the aim to restore lost functionality, control external devices or augment daily experiences. To combine optimal performance with wide applicability, high-qual... Read More about Practical real-time MEG-based neural interfacing with optically pumped magnetometers.

Magnetic Field Mapping and Correction for Moving OP-MEG (2021)
Journal Article
Mellor, S., Tierney, T. M., O'Neill, G. C., Alexander, N., Seymour, R. A., Holmes, N., …Barnes, G. R. (2022). Magnetic Field Mapping and Correction for Moving OP-MEG. IEEE Transactions on Biomedical Engineering, 69(2), 528-536. https://doi.org/10.1109/TBME.2021.3100770

Background: Optically pumped magnetometers (OPMs) have made moving, wearable magnetoencephalography (MEG) possible. The OPMs typically used for MEG require a low background magnetic field to operate, which is achieved using both passive and active ma... Read More about Magnetic Field Mapping and Correction for Moving OP-MEG.

Precision magnetic field modelling and control for wearable magnetoencephalography (2021)
Journal Article
Rea, M., Holmes, N., Hill, R. M., Boto, E., Leggett, J., Edwards, L. J., …Brookes, M. J. (2021). Precision magnetic field modelling and control for wearable magnetoencephalography. NeuroImage, 241, Article 118401. https://doi.org/10.1016/j.neuroimage.2021.118401

Optically-pumped magnetometers (OPMs) are highly sensitive, compact magnetic field sensors, which offer a viable alternative to cryogenic sensors (superconducting quantum interference devices – SQUIDs) for magnetoencephalography (MEG). With the promi... Read More about Precision magnetic field modelling and control for wearable magnetoencephalography.

Theoretical advantages of a triaxial optically pumped magnetometer magnetoencephalography system (2021)
Journal Article
Brookes, M. J., Boto, E., Rea, M., Shah, V., Osborne, J., Holmes, N., …Bowtell, R. (2021). Theoretical advantages of a triaxial optically pumped magnetometer magnetoencephalography system. NeuroImage, 236, Article 118025. https://doi.org/10.1016/j.neuroimage.2021.118025

The optically pumped magnetometer (OPM) is a viable means to detect magnetic fields generated by human brain activity. Compared to conventional detectors (superconducting quantum interference devices) OPMs are small, lightweight, flexible, and operat... Read More about Theoretical advantages of a triaxial optically pumped magnetometer magnetoencephalography system.

Optimal Inverse Design of Magnetic Field Profiles in a Magnetically Shielded Cylinder (2020)
Journal Article
Packer, M., Hobson, P., Holmes, N., Leggett, J., Glover, P., Brookes, M., …Fromhold, T. (2020). Optimal Inverse Design of Magnetic Field Profiles in a Magnetically Shielded Cylinder. Physical Review Applied, 14(5), Article 054004. https://doi.org/10.1103/PhysRevApplied.14.054004

Magnetic shields that use both active and passive components to enable the generation of a tailored low-field environment are required for many applications in science, engineering, and medical imaging. Until now, accurate field nulling, or field gen... Read More about Optimal Inverse Design of Magnetic Field Profiles in a Magnetically Shielded Cylinder.

Mouth magnetoencephalography: A unique perspective on the human hippocampus (2020)
Journal Article
Tierney, T. M., Levy, A., Barry, D. N., Meyer, S. S., Shigihara, Y., Everatt, M., …Barnes, G. R. (2021). Mouth magnetoencephalography: A unique perspective on the human hippocampus. NeuroImage, 225, Article 117443. https://doi.org/10.1016/j.neuroimage.2020.117443

Traditional magnetoencephalographic (MEG) brain imaging scanners consist of a rigid sensor array surrounding the head; this means that they are maximally sensitive to superficial brain structures. New technology based on optical pumping means that we... Read More about Mouth magnetoencephalography: A unique perspective on the human hippocampus.

Multi-channel whole-head OPM-MEG: Helmet design and a comparison with a conventional system (2020)
Journal Article
Hill, R. M., Boto, E., Rea, M., Holmes, N., Leggett, J., Coles, L. A., …Brookes, M. J. (2020). Multi-channel whole-head OPM-MEG: Helmet design and a comparison with a conventional system. NeuroImage, 219, Article 116995. https://doi.org/10.1016/j.neuroimage.2020.116995

© 2020 The Authors Magnetoencephalography (MEG) is a powerful technique for functional neuroimaging, offering a non-invasive window on brain electrophysiology. MEG systems have traditionally been based on cryogenic sensors which detect the small extr... Read More about Multi-channel whole-head OPM-MEG: Helmet design and a comparison with a conventional system.