Using OPM-MEG in contrasting magnetic environments [PDF]
NeuroImage, 2022 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 interference ...
Ryan M. Hill +13 more
doaj +7 more sources
Multi-channel whole-head OPM-MEG: Helmet design and a comparison with a conventional system [PDF]
NeuroImage, 2020 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 extracranial magnetic ...
Ryan M. Hill +13 more
doaj +7 more sources
OMMR: Co-registration toolbox of OPM-MEG and MRI [PDF]
Frontiers in Neuroscience, 2022 Magnetoencephalography (MEG) based on optically pumped magnetometers (OPM-MEG) has shown better flexibility in sensor configuration compared with the conventional superconducting quantum interference devices-based MEG system while being better suited for
Fuzhi Cao +19 more
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OPM-MEG in multiple sclerosis: Proof of principle, and the effect of naturalistic posture [PDF]
NeuroImage: ClinicalMultiple Sclerosis (MS) is a common neurological disorder in which myelin damage affects neuronal signalling. Magnetoencephalography (MEG – the measurement of magnetic fields generated by neuronal currents) offers metrics of brain function that relate ...
Benjamin J. Sanders +22 more
doaj +5 more sources
Measuring functional connectivity with wearable MEG [PDF]
NeuroImage, 2021 Optically-pumped magnetometers (OPMs) offer the potential for a step change in magnetoencephalography (MEG) enabling wearable systems that provide improved data quality, accommodate any subject group, allow data capture during movement and potentially ...
Elena Boto +9 more
doaj +3 more sources
A lightweight magnetically shielded room with active shielding [PDF]
Scientific Reports, 2022 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).
Niall Holmes +25 more
doaj +4 more sources
Imaging somatosensory cortex responses measured by OPM-MEG: Variational free energy-based spatial smoothing estimation approach [PDF]
iScience, 2022 Summary: In recent years, optically pumped magnetometer (OPM)-based magnetoencephalography (MEG) has shown potential for analyzing brain activity. It has a flexible sensor configuration and comparable sensitivity to conventional SQUID-MEG. We constructed
Nan An +10 more
doaj +2 more sources
Triaxial detection of the neuromagnetic field using optically-pumped magnetometry: feasibility and application in children [PDF]
NeuroImage, 2022 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 during ...
Elena Boto +10 more
doaj +3 more sources
Potential of 4He OPM‐MEG for detecting interictal epileptic activity: A comparison with SQUID‐MEG [PDF]
Epilepsia OpenObjectives Conventional magnetoencephalography (MEG) based on superconducting quantum interference devices sensors (SQUIDs) is the only widely used MEG system in both clinical and research settings.
Denis Schwartz +6 more
doaj +2 more sources
A fully integrated whole-head helium OPM MEG: a performance assessment compared to cryogenic MEG [PDF]
Frontiers in Medical TechnologyMagnetoencephalography (MEG) is a neuroimaging technique that measures neuronal activity at a millisecond scale. A few years ago, a new generation of MEG sensors emerged: optically pumped magnetometers (OPMs). The most common OPMs use alkali atoms as the
Maxime Bonnet +7 more
doaj +2 more sources