Results 21 to 30 of about 183,781 (139)

Improved spatio-temporal measurements of visually evoked fields using optically-pumped magnetometers [PDF]

open access: yesScientific Reports, 2021
Recent developments in performance and practicality of optically-pumped magnetometers (OPMs) have enabled new capabilities in non-invasive brain function mapping through magnetoencephalography.
Aikaterini Gialopsou   +11 more
doaj   +2 more sources

Feasibility of magnetomyography with optically pumped magnetometers in a mobile magnetic shield [PDF]

open access: yesScientific Reports
While magnetomyography (MMG) using optically pumped magnetometers (OPMs) is a promising method for non-invasive investigation of the neuromuscular system, it has almost exclusively been performed in magnetically shielded rooms (MSRs) to date.
Simon Nordenström   +6 more
doaj   +2 more sources

Using optically pumped magnetometers to replicate task-related responses in next generation magnetoencephalography [PDF]

open access: yesScientific Reports
Optically pumped magnetometers (OPMs) offer a new wearable means to measure magnetoencephalography (MEG) signals, with many advantages compared to conventional systems.
Kristina Safar   +7 more
doaj   +2 more sources

Operation of an optical in-well-pumped vertical-external-cavity surface-emitting laser [PDF]

open access: yes, 2006
We report the operation of an optical in-well-pumped vertical-external-cavity surface-emitting laser. The laser delivers 1 W at 855 nm and is pumped with a cost-effective fiber-coupled laser diode emitting at 806 nm.
Ferguson, Allister I.   +5 more
core   +4 more sources

Modelling optically pumped magnetometer interference in MEG as a spatially homogeneous magnetic field

open access: yesNeuroImage, 2021
Here we propose that much of the magnetic interference observed when using optically pumped magnetometers for MEG experiments can be modeled as a spatially homogeneous magnetic field.
Tim M. Tierney   +7 more
doaj   +1 more source

Floquet description of optically pumped magnetometers [PDF]

open access: yes, 2021
We present a theoretical description of the Voigt and Faraday effect based optically pumped magnetometers using the Floquet expansion. Our analysis describes the spin-operator dynamics of the first- F(t) and second-order F2(t) moments and takes into ...
Pyragius, Tadas, Florez, Hans Marin
core   +1 more source

Tri-axial rubidium and helium optically pumped magnetometers for on-scalp magnetoencephalography recording of interictal epileptiform discharges: a case study. [PDF]

open access: yesFront Neurosci, 2023
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 tri-
Feys O   +17 more
europepmc   +2 more sources

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