Results 21 to 30 of about 96,284 (164)

Measuring Phase–Amplitude Coupling Effect with OPM-MEG

Photonics
Optically pumped magnetometers (OPMs) present a promising opportunity to advance magnetoencephalography (MEG), enhancing the accuracy of neuronal activity recordings due to their high spatiotemporal resolution.
Yong Li, Hao Lu, Chunhui Wang, Fuzhi Cao, Jianzhi Yang, Binyi Su, Ying Liu, Xiaolin Ning   +7 more
doaj   +3 more sources

An integrated full-head OPM-MEG system based on 128 zero-field sensors [PDF]

Frontiers in Neuroscience, 2023
Compact optically-pumped magnetometers (OPMs) are now commercially available with noise floors reaching 10 fT/Hz1/2. However, to be used effectively for magnetoencephalography (MEG), dense arrays of these sensors are required to operate as an integrated ...
Peter Teale, Orang Alem, Isabelle Buard   +2 more
exaly   +4 more sources

From simulation to clinic: Assessing the required channel count for effective clinical use of OPM-MEG systems

NeuroImage
The channel count in an Optically Pumped Magnetometer Magnetoencephalography (OPM-MEG) system plays a pivotal role in determining its overall performance.
Yuming Peng, Chang Sun, Ming Ding
exaly   +4 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, Gao Jia-Hong
exaly   +5 more sources

Optimization and Analysis of Tangential Component Orientations in OPM-MEG Sensor Array. [PDF]

Bioengineering (Basel)
Optically pumped magnetometers (OPMs) have brought a transformative advancement to magnetoencephalography (MEG), enabling flexible, noncryogenic, and wearable neuroimaging systems. In particular, the development of triaxial OPM sensors allows for simultaneous measurement of full magnetic field vectors, including both radial and additional tangential ...
Wang W, Cao F, An N, Li W, Wang C, Gao Z, Xiang M, Ning X.   +7 more
europepmc   +4 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 ...
Xiaohan Chi, Yuming Peng, Ming Ding
exaly   +4 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

The neurodevelopmental trajectory of beta band oscillations: an OPM-MEG study

Abstract Neural 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 on the mechanisms underlying neurological and psychiatric disorders. However,
Rier L, Rhodes N, Pakenham D, Boto E, Holmes N, Hill RM, Reina Rivero G, Shah V, Doyle C, Osborne J, Bowtell RW, Taylor M, Brookes MJ.   +12 more
europepmc   +5 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

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