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Tracking the neurodevelopmental trajectory of beta band oscillations with optically pumped magnetometer-based magnetoencephalography (2024)
Journal Article
Rier, L., Rhodes, N., Pakenham, D. O., Boto, E., Holmes, N., Hill, R. M., …Brookes, M. J. (2024). Tracking the neurodevelopmental trajectory of beta band oscillations with optically pumped magnetometer-based magnetoencephalography. eLife, 13, Article RP94561. https://doi.org/10.7554/elife.94561.3

Neural oscillations mediate the coordination of activity within and between brain networks, supporting cognition and behaviour. How these processes develop throughout childhood is not only an important neuroscientific question but could also shed lig... Read More about Tracking the neurodevelopmental trajectory of beta band oscillations with optically pumped magnetometer-based magnetoencephalography.

Simultaneous whole-head electrophysiological recordings using EEG and OPM-MEG (2024)
Journal Article
Seedat, Z. A., Pier, K. S., Holmes, N., Rea, M., Al-Hilaly, L., Tierney, T. M., …Brookes, M. J. (2024). Simultaneous whole-head electrophysiological recordings using EEG and OPM-MEG. Imaging Neuroscience, 2, 1-15. https://doi.org/10.1162/imag_a_00179

Electroencephalography (EEG) and magnetoencephalography (MEG) non-invasively measure human brain electrophysiology. They differ in nature; MEG offers better performance whilst EEG (a wearable platform) is more practical. They are also complementary,... Read More about Simultaneous whole-head electrophysiological recordings using EEG and OPM-MEG.

Post‐task responses following working memory and movement are driven by transient spectral bursts with similar characteristics (2024)
Journal Article
Coleman, S. C., Seedat, Z. A., Pakenham, D. O., Quinn, A. J., Brookes, M. J., Woolrich, M. W., & Mullinger, K. J. (2024). Post‐task responses following working memory and movement are driven by transient spectral bursts with similar characteristics. Human Brain Mapping, 45(7), Article e26700. https://doi.org/10.1002/hbm.26700

The post-movement beta rebound has been studied extensively using magnetoencephalography (MEG) and is reliably modulated by various task parameters as well as illness. Our recent study showed that rebounds, which we generalise as “post-task responses... Read More about Post‐task responses following working memory and movement are driven by transient spectral bursts with similar characteristics.

The neurodevelopmental trajectory of beta band oscillations: an OPM-MEG study (2024)
Journal Article
Rier, L., Rhodes, N., Pakenham, D., Boto, E., Holmes, N., Hill, R. M., …Brookes, M. J. (2024). The neurodevelopmental trajectory of beta band oscillations: an OPM-MEG study. eLife, Article 94561v1. https://doi.org/10.7554/eLife.94561.1

Neural oscillations mediate coordination of activity within and between brain networks, supporting cognition and behaviour. How these processes develop throughout childhood is not only a critical neuroscientific question but could also shed light on... Read More about The neurodevelopmental trajectory of beta band oscillations: an OPM-MEG study.

Tri-axial rubidium and helium optically pumped magnetometers for on-scalp magnetoencephalography recording of interictal epileptiform discharges: a case study (2023)
Journal Article
Feys, O., Corvilain, P., Labyt, E., Mahmoudzadeh, M., Routier, L., Sculier, C., …De Tiège, X. (2023). Tri-axial rubidium and helium optically pumped magnetometers for on-scalp magnetoencephalography recording of interictal epileptiform discharges: a case study. Frontiers in Neuroscience, 17, Article 1284262. https://doi.org/10.3389/fnins.2023.1284262

Cryogenic magnetoencephalography (MEG) enhances the presurgical assessment of refractory focal epilepsy (RFE). Optically pumped magnetometers (OPMs) are cryogen-free sensors that enable on-scalp MEG recordings. Here, we investigate the application of... Read More about Tri-axial rubidium and helium optically pumped magnetometers for on-scalp magnetoencephalography recording of interictal epileptiform discharges: a case study.

Portable single-beam cesium zero-field magnetometer for magnetocardiography (2023)
Journal Article
Dawson, R., O'Dwyer, C., Mrozowski, M. S., Irwin, E., McGilligan, J. P., Burt, D. P., …Riis, E. (2023). Portable single-beam cesium zero-field magnetometer for magnetocardiography. Journal of Optical Microsystems, 3(4), Article 044501. https://doi.org/10.1117/1.jom.3.4.044501

Optically pumped magnetometers (OPMs) are becoming common in the realm of biomagnetic measurements. We discuss the development of a prototype zero-field cesium portable OPM and its miniaturized components. Zero-field sensors operate in a very low sta... Read More about Portable single-beam cesium zero-field magnetometer for magnetocardiography.

Test-retest reliability of the human connectome: An OPM-MEG study (2023)
Journal Article
Rier, L., Michelmann, S., Ritz, H., Shah, V., Hill, R. M., Osborne, J., …Boto, E. (2023). Test-retest reliability of the human connectome: An OPM-MEG study. Imaging Neuroscience, 1, 1-20. https://doi.org/10.1162/imag_a_00020

Magnetoencephalography with optically pumped magnetometers (OPM-MEG) offers a new way to record electrophysiological brain function, with significant advantages over conventional MEG, including adaptability to head shape/size, free movement during sc... Read More about Test-retest reliability of the human connectome: An OPM-MEG study.

An Iterative Implementation of the Signal Space Separation Method for Magnetoencephalography Systems with Low Channel Counts (2023)
Journal Article
Holmes, N., Bowtell, R., Brookes, M. J., & Taulu, S. (2023). An Iterative Implementation of the Signal Space Separation Method for Magnetoencephalography Systems with Low Channel Counts. Sensors, 23(14), Article 6537. https://doi.org/10.3390/s23146537

The signal space separation (SSS) method is routinely employed in the analysis of multichannel magnetic field recordings (such as magnetoencephalography (MEG) data). In the SSS method, signal vectors are posed as a multipole expansion of the magnetic... Read More about An Iterative Implementation of the Signal Space Separation Method for Magnetoencephalography Systems with Low Channel Counts.

Naturalistic Hyperscanning with Wearable Magnetoencephalography (2023)
Journal Article
Holmes, N., Rea, M., Hill, R. M., Boto, E., Leggett, J., Edwards, L. J., …Bowtell, R. (2023). Naturalistic Hyperscanning with Wearable Magnetoencephalography. Sensors, 23(12), Article 5454. https://doi.org/10.3390/s23125454

The evolution of human cognitive function is reliant on complex social interactions which form the behavioural foundation of who we are. These social capacities are subject to dramatic change in disease and injury; yet their supporting neural substra... Read More about Naturalistic Hyperscanning with Wearable Magnetoencephalography.

Non-invasive measurements of ictal and interictal epileptiform activity using optically pumped magnetometers (2023)
Journal Article
Hillebrand, A., Holmes, N., Sijsma, N., O’Neill, G. C., Tierney, T. M., Liberton, N., …Barnes, G. R. (2023). Non-invasive measurements of ictal and interictal epileptiform activity using optically pumped magnetometers. Scientific Reports, 13(1), Article 4623. https://doi.org/10.1038/s41598-023-31111-y

Magneto- and electroencephalography (MEG/EEG) are important techniques for the diagnosis and pre-surgical evaluation of epilepsy. Yet, in current cryogen-based MEG systems the sensors are offset from the scalp, which limits the signal-to-noise ratio... Read More about Non-invasive measurements of ictal and interictal epileptiform activity using optically pumped magnetometers.

Measurement of Frontal Midline Theta Oscillations using OPM-MEG (2023)
Journal Article
Rhodes, N., Rea, M., Boto, E., Rier, L., Shah, V., Hill, R. M., …Brookes, M. J. (2023). Measurement of Frontal Midline Theta Oscillations using OPM-MEG. NeuroImage, 271, Article 120024. https://doi.org/10.1016/j.neuroimage.2023.120024

Optically pumped magnetometers (OPMs) are an emerging lightweight and compact sensor that can measure magnetic fields generated by the human brain. OPMs enable construction of wearable magnetoencephalography (MEG) systems, which offer advantages over... Read More about Measurement of Frontal Midline Theta Oscillations using OPM-MEG.

A lightweight magnetically shielded room with active shielding (2022)
Journal Article
Holmes, N., Rea, M., Chalmers, J., Leggett, J., Edwards, L. J., Nell, P., …Bowtell, R. (2022). A lightweight magnetically shielded room with active shielding. Scientific Reports, 12, Article 13561. https://doi.org/10.1038/s41598-022-17346-1

Magnetically shielded rooms (MSRs) use multiple layers of materials such as MuMetal to screen external magnetic fields that would otherwise interfere with high precision magnetic field measurements such as magnetoencephalography (MEG). Optically pump... Read More about A lightweight magnetically shielded room with active shielding.

Predicting time-resolved electrophysiological brain networks from structural eigenmodes (2022)
Journal Article
Tewarie, P., Prasse, B., Meier, J., Mandke, K., Warrington, S., Stam, C. J., …Hillebrand, A. (2022). Predicting time-resolved electrophysiological brain networks from structural eigenmodes. Human Brain Mapping, https://doi.org/10.1002/hbm.25967

How temporal modulations in functional interactions are shaped by the underlying anatomical connections remains an open question. Here, we analyse the role of structural eigenmodes, in the formation and dissolution of temporally evolving functional b... Read More about Predicting time-resolved electrophysiological brain networks from structural eigenmodes.

On-Scalp Optically Pumped Magnetometers versus Cryogenic Magnetoencephalography for Diagnostic Evaluation of Epilepsy in School-aged Children (2022)
Journal Article
Feys, O., Corvilain, P., Aeby, A., Sculier, C., Holmes, N., Brookes, M., …De Tiège, X. (2022). On-Scalp Optically Pumped Magnetometers versus Cryogenic Magnetoencephalography for Diagnostic Evaluation of Epilepsy in School-aged Children. Radiology, 304(2), 429-434. https://doi.org/10.1148/radiol.212453

Background Magnetoencephalography (MEG) is an established method used to detect and localize focal interictal epileptiform discharges (IEDs). Current MEG systems house hundreds of cryogenic sensors in a rigid, one-size-fits-all helmet, which results... Read More about On-Scalp Optically Pumped Magnetometers versus Cryogenic Magnetoencephalography for Diagnostic Evaluation of Epilepsy in School-aged Children.

Using OPM-MEG in contrasting magnetic environments (2022)
Journal Article
Hill, R. M., Devasagayam, J., Holmes, N., Boto, E., Shah, V., Osborne, J., …Brookes, M. J. (2022). Using OPM-MEG in contrasting magnetic environments. NeuroImage, 253, Article 119084. https://doi.org/10.1016/j.neuroimage.2022.119084

Magnetoencephalography (MEG) has been revolutionised by optically pumped magnetometers (OPMs). “OPM-MEG” offers higher sensitivity, better spatial resolution, and lower cost than conventional instrumentation based on superconducting quantum interfere... Read More about Using OPM-MEG in contrasting magnetic environments.

Triaxial detection of the neuromagnetic field using optically-pumped magnetometry: feasibility and application in children (2022)
Journal Article
Boto, E., Shah, V., Hill, R. M., Rhodes, N., Osborne, J., Doyle, C., …Brookes, M. J. (2022). Triaxial detection of the neuromagnetic field using optically-pumped magnetometry: feasibility and application in children. NeuroImage, 252, Article 119027. https://doi.org/10.1016/j.neuroimage.2022.119027

Optically-pumped magnetometers (OPMs) are an established alternative to superconducting sensors for magnetoencephalography (MEG), offering significant advantages including flexibility to accommodate any head size, uniform coverage, free movement duri... Read More about Triaxial detection of the neuromagnetic field using optically-pumped magnetometry: feasibility and application in children.

Mild traumatic brain injury impairs the coordination of intrinsic and motor-related neural dynamics (2021)
Journal Article
Rier, L., Zamyadi, R., Zhang, J., Emami, Z., Seedat, Z. A., Mocanu, S., …Dunkley, B. T. (2021). Mild traumatic brain injury impairs the coordination of intrinsic and motor-related neural dynamics. NeuroImage: Clinical, 32, Article 102841. https://doi.org/10.1016/j.nicl.2021.102841

Mild traumatic brain injury (mTBI) poses a considerable burden on healthcare systems. Whilst most patients recover quickly, a significant number suffer from sequelae that are not accompanied by measurable structural damage. Understanding the neural u... Read More about Mild traumatic brain injury impairs the coordination of intrinsic and motor-related neural dynamics.