Theoretical advantages of a triaxial optically pumped magnetometer magnetoencephalography system [PDF]
NeuroImage, 2021 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 operate ...
Matthew J. Brookes +9 more
doaj +5 more sources
An Optically Pumped Magnetometer with Omnidirectional Magnetic Field Sensitivity [PDF]
Sensors, 2023 In mobile applications such as geomagnetic surveying, two major effects hamper the use of optically pumped magnetometers: dead zones, sensor orientations where the sensors signal amplitude drops; and heading errors, a dependence of the measured magnetic ...
Volkmar Schultze +5 more
doaj +5 more sources
Cross-Axis Dynamic Field Compensation of Optically Pumped Magnetometer Arrays for MEG [PDF]
NeuroImage, 2022 We present dynamic field compensation (DFC), whereby three-axis field measurements from reference magnetometers are used to dynamically maintain null at the alkali vapor cells of an array of primary sensors that are proximal to a subject's scalp ...
Stephen E. Robinson +8 more
doaj +5 more sources
Phantom-Based Approach for Comparing Conventional and Optically Pumped Magnetometer Magnetoencephalography Systems [PDF]
SensorsMagnetoencephalography (MEG) is a vital tool for understanding neural dynamics, offering a noninvasive technique for measuring subtle magnetic field variations around the scalp generated by synchronized neuronal activity.
Daisuke Oyama, Hadi Zaatiti
doaj +3 more sources
Spatial and Frequency Specific Artifact Reduction in Optically Pumped Magnetometer Recordings [PDF]
Journal of Integrative Neuroscience, 2022 Background: Magnetoencephalography (MEG) based on optically pumped magnetometers (OPMs) opens up new opportunities for brain research. However, OPM recordings are associated with artifacts.
Jing Xiang +3 more
doaj +4 more sources
Tracking the neurodevelopmental trajectory of beta band oscillations with optically pumped magnetometer-based magnetoencephalography [PDF]
eLifeNeural 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 light ...
Lukas Rier +12 more
doaj +3 more sources
Wireless optically pumped magnetometer MEG
NeuroImageThe current magnetoencephalography (MEG) systems, which rely on cables for control and signal transmission, do not fully realize the potential of wearable optically pumped magnetometers (OPM). This study presents a significant advancement in wireless OPM-
Hao Cheng +12 more
doaj +4 more sources
An Optically Pumped Magnetometer Working in the Light-Shift Dispersed Mz Mode [PDF]
Sensors, 2017 We present an optically pumped magnetometer working in a new operational mode—the light-shift dispersed Mz (LSD-Mz) mode. It is realized combining various features; (1) high power off-resonant optical pumping; (2) Mz configuration, where pumping light ...
Volkmar Schultze +5 more
doaj +4 more sources
Source reconstruction without an MRI using optically pumped magnetometer-based magnetoencephalography. [PDF]
Imaging Neurosci (Camb)Source modelling in magnetoencephalography (MEG) maps the spatial origins of electrophysiological signals in the brain. Typically, this requires an anatomical MRI scan of the subject’s head, from which a model of the neuromagnetic field (the forward ...
Rhodes N +4 more
europepmc +2 more sources
Adaptive multipole models of optically pumped magnetometer data. [PDF]
Hum Brain MappMultipole expansions have been used extensively in the Magnetoencephalography (MEG) literature for mitigating environmental interference and modelling brain signal. However, their application to Optically Pumped Magnetometer (OPM) data is challenging due
Tierney TM +4 more
europepmc +2 more sources