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 ...
Theo Scholtes +2 more
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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 ...
Richard Bowtell +2 more
exaly +4 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 ...
Orang Alem, Tom Holroyd
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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 ...
Theo Scholtes +2 more
exaly +4 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 +2 more sources
Drug Monitoring by Optically Pumped Atomic Magnetometer
IEEE Photonics Journal, 2022 A novel drug monitoring method is experimentally demonstrated by optically pumped atomic magnetometer. An elliptically polarized single-beam spin-exchange-relaxation-free atomic magnetometer (SERF AM) is used to realize magnetorelaxometry (MRX ...
Zhiwen Zhang, Xiang He, Qiang Lin
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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 +2 more sources
Early insights into eyeblink conditioning using optically pumped magnetometer-based MEG [PDF]
Frontiers in Human NeuroscienceIntroductionThere is a profound lack of electrophysiological data from the cerebellum in humans, as compared to animals, because it is difficult to record cerebellar activity non-invasively using magnetoencephalography (MEG) or electroencephalography ...
Chin-Hsuan Sophie Lin +10 more
doaj +2 more sources
Enhanced Neural Decoding With Optically Pumped Magnetometer MEG Using Multivariate Pattern Analysis [PDF]
IEEE Transactions on Neural Systems and Rehabilitation EngineeringMultivariate pattern analysis (MVPA) provides a sensitive means to decode distributed neural activity from magnetoencephalography (MEG) by jointly exploiting temporal and spatial information.
Jiawei Liang +4 more
doaj +2 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-
Bingjiang Lyu, Dongxu Li, Jia-Hong Gao
exaly +3 more sources