Results 31 to 40 of about 125,997 (158)

Repairbads: An automatic and adaptive method to repair bad channels and segments for OPM-MEG

NeuroImage
The optically pumped magnetometer (OPM) based magnetoencephalography (MEG) system offers advantages such as flexible layout and wearability. However, the position instability or jitter of OPM sensors can result in bad channels and segments, which ...
Xiaolin Ning, Fuzhi Cao, Ruonan Wang
exaly   +6 more sources

Extended homogeneous field correction method based on oblique projection in OPM-MEG

NeuroImage
Optically pumped magnetometer-based magnetoencephalography (OPM-MEG) is an novel non-invasive functional imaging technique that features more flexible sensor configurations and wearability; however, this also increases the requirement for environmental ...
Fulong Wang, Fuzhi Cao, Yujie Ma, Ruochen Zhao, Ruonan Wang, Nan An, Min Xiang, Dawei Wang, Xiaolin Ning   +8 more
doaj   +4 more sources

Magnetoencephalography with optically pumped magnetometers (OPM-MEG): the next generation of functional neuroimaging [PDF]

Trends in Neurosciences, 2022
Magnetoencephalography (MEG) measures human brain function via assessment of the magnetic fields generated by electrical activity in neurons. Despite providing high-quality spatiotemporal maps of electrophysiological activity, current MEG instrumentation is limited by cumbersome field sensing technologies, resulting in major barriers to utility.
Richard Bowtell, Elena Boto, Niall Holmes   +2 more
exaly   +4 more sources

Salience network hub dysfunction is associated with cognitive impairment in self-limited epilepsy with centrotemporal spikes: An OPM-MEG study. [PDF]

Epilepsia Open
Abstract Objective Self‐limited epilepsy with centrotemporal spikes (SeLECTS), although characterized by well‐controlled seizures, is frequently associated with persistent cognitive deficits in affected children. This study aimed to investigate whether hub dysfunction of the salience network (SN) is associated with cognitive impairment in SeLECTS ...
Yang C, Wu G, An N, Jiang T, Wang Y, Zhao W, Cao W, Wang X, Jiang H, Yuan Z.   +9 more
europepmc   +2 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, Fuzhi Cao, Wen Li, Wenli Wang, Weinan Xu, Chunhui Wang, Min Xiang, Yang Gao, Binbin Sui, Aimin Liang, Xiaolin Ning   +10 more
doaj   +2 more sources

New avenues for functional neuroimaging: ultra-high field MRI and OPM-MEG [PDF]

Psychoradiology, 2021
Abstract Functional brain imaging technology has developed rapidly in recent years. On the one hand, high-field 7-Tesla magnetic resonance imaging (MRI) has excelled the limited spatial resolution of 3-Tesla MRI, allowing us to enter a new world of mesoscopic imaging from the macroscopic imaging of human brain functions.
Jia-Hong Gao
exaly   +5 more sources

Potential of 4He OPM‐MEG for detecting interictal epileptic activity: A comparison with SQUID‐MEG [PDF]

Epilepsia Open
Objectives 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, Jean‐Michel Badier, Tjerk P. Gutteling, Sébastien Daligault, Etienne Labyt, Francesca Bonini, Julien Jung   +6 more
doaj   +2 more sources

Optimising the sensing volume of OPM sensors for MEG source reconstruction [PDF]

NeuroImage, 2022
Magnetoencephalography (MEG) based on optically pumped magnetometers (OPMs) has been hailed as the future of electrophysiological recordings from the human brain.
Yulia Bezsudnova, Lari M. Koponen, Giovanni Barontini, Ole Jensen, Anna U. Kowalczyk   +4 more
doaj   +2 more sources

A first-in-human application of OPM-MEG for localizing motor activity area: Compared to functional MRI

NeuroImage
Background: Accurately localizing brain motor areas is vital for protecting motor function during neurosurgical procedures. Magnetoencephalography (MEG) based on optically pumped magnetometer (OPM) improves the availability of MEG in clinical ...
Ming Ding, Nan Ji, Xiaohan Chi
exaly   +3 more sources

Noise Reduction Algorithms for OPM-MEG data

Magnetoencephalography (MEG) using optically pumped magnetometers (OPM) offerssuperior spatial resolution and flexibility compared to the conventional MEG-systems.However OPM-MEG is highly vulnerable to interference such as environmental noiseand muscle ...
Ledin, Lukas
core   +5 more sources