Results 31 to 40 of about 96,284 (164)

Towards OPM-MEG in a virtual reality environment. [PDF]

Neuroimage, 2019
Virtual reality (VR) provides an immersive environment in which a participant can experience a feeling of presence in a virtual world. Such environments generate strong emotional and physical responses and have been used for wide-ranging applications.
Roberts G, Holmes N, Alexander N, Boto E, Leggett J, Hill RM, Shah V, Rea M, Vaughan R, Maguire EA, Kessler K, Beebe S, Fromhold M, Barnes GR, Bowtell R, Brookes MJ.   +15 more
europepmc   +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

Non-Invasive Functional-Brain-Imaging with an OPM-based Magnetoencephalography System.

PLoS ONE, 2020
A non-invasive functional-brain-imaging system based on optically-pumped-magnetometers (OPM) is presented. The OPM-based magnetoencephalography (MEG) system features 20 OPM channels conforming to the subject's scalp. We have conducted two MEG experiments
Amir Borna, Tony R Carter, Anthony P Colombo, Yuan-Yu Jau, Jim McKay, Michael Weisend, Samu Taulu, Julia M Stephen, Peter D D Schwindt   +8 more
doaj   +2 more sources

Biplanar Nulling Coil System for OPM-MEG Using Printed Circuit Boards. [PDF]

Sensors (Basel)
Optically pumped magnetometers (OPMs) are a promising magnetoencephalography (MEG) technology for the non-invasive measurement of human electrophysiological signals. Prior work developed biplanar background field-nulling coils necessary for OPM operation, but these were expensive to produce and required tedious error-prone manual winding of >1 km of
Jas M, Kamataris J, Matsubara T, Dong C, Motta G, Sohrabpour A, Ahlfors SP, Hämäläinen M, Okada Y, Sundaram P.   +9 more
europepmc   +6 more sources

A New Generation of OPM for High Dynamic and Large Bandwidth MEG: The ⁴He OPMs—First Applications in Healthy Volunteers

Sensors, 2023
MagnetoEncephaloGraphy (MEG) provides a measure of electrical activity in the brain at a millisecond time scale. From these signals, one can non-invasively derive the dynamics of brain activity.
Tjerk P. Gutteling, Mathilde Bonnefond, Tommy Clausner, Sébastien Daligault, Rudy Romain, Sergey Mitryukovskiy, William Fourcault, Vincent Josselin, Matthieu Le Prado, Agustin Palacios-Laloy, Etienne Labyt, Julien Jung, Denis Schwartz   +12 more
doaj   +3 more sources

Mapping neural signatures of face processing in young children: an OPM-MEG study. [PDF]

Soc Cogn Affect Neurosci
Abstract Facial expressions are fundamental to social communication, with emotional face processing developing throughout childhood. However, the neural mechanisms underlying this process in young children remain underexplored due to challenges in neuroimaging this population.
Safar K, Vandewouw MM, Rhodes N, Sato J, Taylor MJ.   +4 more
europepmc   +4 more sources

Expanding the clinical application of OPM-MEG using an effective automatic suppression method for the dental brace metal artifact

NeuroImage
Optically pumped magnetometer magnetoencephalography (OPM-MEG) holds significant promise for clinical functional brain imaging due to its superior spatiotemporal resolution.
Ruonan Wang, Kaiwen Fu, Ruochen Zhao, Dawei Wang, Zhimin Yang, Wei Bin, Yang Gao, Xiaolin Ning   +7 more
doaj   +2 more sources

Test-retest reliability of auditory MMN measured with OPM-MEG

Abstract In this paper, we report results from an investigation of auditory mismatch responses as measured by magnetoencephalography (MEG) based on optically pumped magnetometers (OPM). Specifically, as part of a quality control study, we examined the reliability and validity of auditory mismatch negativity (MMN) recordings, obtained ...
Demko L, Iglesias S, Mellor S, Brand K, Kalberer A, Köchli L, Marino S, Zimmermann N, Heinzle J, Stephan KE.   +9 more
europepmc   +2 more sources

The impact of channel density, inverse solutions, connectivity metrics and calibration errors on OPM-MEG connectivity analysis: A simulation study

NeuroImage
Magnetoencephalography (MEG) systems based on optically pumped magnetometers (OPMs) have rapidly developed in the fields of brain function, health, and disease.
Shengjie Qi, Xinda Song, Le Jia
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 movements which provides a need for noise reduction techniques.
Ledin, Lukas
core   +3 more sources