Results 21 to 30 of about 136,889 (206)

Cross-Axis projection error in optically pumped magnetometers and its implication for magnetoencephalography systems

NeuroImage, 2022
Optically pumped magnetometers (OPMs) developed for magnetoencephalography (MEG) typically operate in the spin-exchange-relaxation-free (SERF) regime and measure a magnetic field component perpendicular to the propagation axis of the optical-pumping ...
Amir Borna, Joonas Iivanainen, Tony R. Carter, Jim McKay, Samu Taulu, Julia Stephen, Peter D.D. Schwindt   +6 more
doaj   +1 more source

Magnetoencephalography: Basic principles

Annals of Indian Academy of Neurology, 2014
Magnetoencephalography (MEG) is the measurement of the magnetic field generated by the electrical activity of neurons. It is usually combined with a magnetic resonance imaging to get what is called magnetic source imaging.
Sanjay P Singh
doaj   +1 more source

OMMR: Co-registration toolbox of OPM-MEG and MRI

Frontiers in Neuroscience, 2022
Magnetoencephalography (MEG) based on optically pumped magnetometers (OPM-MEG) has shown better flexibility in sensor configuration compared with the conventional superconducting quantum interference devices-based MEG system while being better suited for
Fuzhi Cao, Fuzhi Cao, Nan An, Nan An, Weinan Xu, Weinan Xu, Wenli Wang, Wenli Wang, Wen Li, Wen Li, Chunhui Wang, Chunhui Wang, Yanfei Yang, Yanfei Yang, Min Xiang, Min Xiang, Yang Gao, Yang Gao, Xiaolin Ning, Xiaolin Ning   +19 more
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Activation of the left inferior frontal gyrus in the first 200 ms of reading: evidence from magnetoencephalography (MEG) [PDF]

, 2009
BACKGROUND: It is well established that the left inferior frontal gyrus plays a key role in the cerebral cortical network that supports reading and visual word recognition. Less clear is when in time this contribution begins.
Aleman, André, Cornelissen, Piers, Holliday, IE, Whitney, Carol, Holliday Ian E., Cornelissen, PL, Hansen, PC, Aleman, A, Kringelbach, Morten L., Holliday, Ian E., Ellis Andrew W., Holliday, Ian, Piers L. Cornelissen (296871), Andrew W. Ellis (373237), Hansen, Peter; id_orcid, Hansen, Peter, Ian E Holliday, Peter C Hansen, Hansen Peter C., Piers L Cornelissen, Whitney, C, Whitney Carol, Peter C. Hansen (269829), Kringelbach Morten L., Kringelbach, ML, Andrew W Ellis, Morten L. Kringelbach (320548), Carol Whitney, Ian E. Holliday (320929), Cornelissen Piers L., Morten L Kringelbach, Hansen, Peter C., Carol Whitney (373238), Cornelissen, Piers L., Ellis, Andrew W., Ellis, AW, Kringelbach, Morten   +36 more
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Magnetic Tunnel Junction Based Chip to Detect the Magnetic Field of Neuronal Signals: A Platform for In Vitro Studies

Proceedings, 2017
Magnetoencephalography (MEG) has revolutionized neuroscience, offering a tool with [...]
Daniela Moretti, Parikshit Pratim Sharma, Daniela Petti, Edoardo Albisetti, Riccardo Bertacco, Pietro Baldelli, Fabio Benfenati   +6 more
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Magnetoencephalography in clinical practice

Arquivos de Neuro-Psiquiatria, 2022
Magnetoencephalography (MEG) is a neurophysiological technique that measures the magnetic fields associated with neuronal activity in the brain. It is closely related but distinct from its counterpart electroencephalography (EEG).
Mohamed HEGAZY, Jay GAVVALA
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Magnetoencephalography as a putative biomarker for Alzheimer's disease. [PDF]

, 2011
Alzheimer’s Disease (AD) is the most common dementia in the elderly and is estimated to affect tens of millions of people worldwide. AD is believed to have a prodromal stage lasting ten or more years.
Maestu, F., Del Pozo, F., Fernandez, A., Fernández, Alberto, Eero Pekkonen, Van Dijk, Bob W., Bagic, A., Bagic, Anto, Jyrki Makela, Nazareth Castellanos, Francisco del Pozo, James T. Becker, Perales Castellanos, Nazareth, Zamrini, Edward, Zamrini, E., Ricardo Bajo, Sudre, Gustavo, van Dijk, B.W., Makela, Jyrki, Pozo Guerrero, Francisco del, Funke, Michael, Edward Zamrini, Maestú, Fernando, Riley, M., Sudre, G., Pozo, F. Del, Fernando Maestu, Becker, James T., Myles Riley, Bajo, R., Funke, M., Myles, Riley, Pekkonen, E., Bob W. van Dijk, Stam, C.J., Castellanos, N., Makela, J., Dijk, B.W. van, C. J. Stam, Becker, J.T., Pekkonen, Eero, Gustavo Sudre, Bajo Breton, Ricardo, Alberto Fernandez, Michael Funke, Anto Bagic   +45 more
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Dynamic filtering of static dipoles in magnetoencephalography [PDF]

, 2013
We consider the problem of estimating neural activity from measurements of the magnetic fields recorded by magnetoencephalography. We exploit the temporal structure of the problem and model the neural current as a collection of evolving current ...
Aston, John A. D., John A. D. Aston, Johansen, Adam M., Thomas E. Nichols, Wilfrid S. Kendall, Adam M. Johansen, Kendall, W. S., Sorrentino, Alberto, Nichols, Thomas E.   +8 more
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Deep brain activities can be detected with magnetoencephalography

Nature Communications, 2019
Magnetoencephalography (MEG) is a non-invasive method of measuring neural activity but the hippocampus and amygdala are difficult to measure with MEG because of their deep localization. Here, the authors show with simultaneous MEG and invasive recordings
Francesca Pizzo, N. Roehri, S. Medina Villalon, A. Trébuchon, S. Chen, S. Lagarde, R. Carron, M. Gavaret, B. Giusiano, A. McGonigal, F. Bartolomei, J. M. Badier, C. G. Bénar   +12 more
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Optically pumped magnetoencephalography in epilepsy

Annals of Clinical and Translational Neurology, 2020
We demonstrate the first use of Optically Pumped Magnetoencephalography (OP‐MEG) in an epilepsy patient with unrestricted head movement. Current clinical MEG uses a traditional SQUID system, where sensors are cryogenically cooled and housed in a helmet ...
Umesh Vivekananda, Stephanie Mellor, Tim M. Tierney, Niall Holmes, Elena Boto, James Leggett, Gillian Roberts, Ryan M. Hill, Vladimir Litvak, Matthew J. Brookes, Richard Bowtell, Gareth R. Barnes, Matthew C. Walker   +12 more
doaj   +1 more source