4.7 Article

A 90-channel triaxial magnetoencephalography system using optically pumped magnetometers

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Engineering, Electrical & Electronic

Thermal Analysis of Wearable OPM-MEG Array System for Auditory Evoked Experiments

Maotong Pang et al.

Summary: In this paper, a verified temperature field model of the OPM-MEG array is developed and a more efficient thermal management scheme using water-cooling design is proposed. The experiments show that temperature control using water cooling system can reduce the location error in auditory evoked experiments.

IEEE SENSORS JOURNAL (2022)

Article Neurosciences

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

Amir Borna et al.

Summary: The study demonstrates that significant cross-axis projection errors can be introduced into the output signal of optically pumped magnetometers, leading to a degradation in localization and calibration accuracy of the system.

NEUROIMAGE (2022)

Article Neurosciences

Triaxial detection of the neuromagnetic field using optically-pumped magnetometry: feasibility and application in children

Elena Boto et al.

Summary: Optically-pumped magnetometers (OPMs) are a viable alternative to superconducting sensors for magnetoencephalography (MEG), with advantages such as flexibility, uniform coverage, better data quality, and lower cost. This study introduces a novel triaxial OPM sensor that can accurately and sensitively measure magnetic fields, showing comparable performance to conventional OPMs. A child-friendly 3D-printed OPM-helmet is also proposed, demonstrating the feasibility of triaxial measurement in pediatric populations.

NEUROIMAGE (2022)

Article Optics

Three-axis closed-loop optically pumped magnetometer operated in the SERF regime

Yeguang Yan et al.

Summary: A high-sensitivity three-axis closed-loop optically pumped magnetometer is proposed, which has wide application prospects.

OPTICS EXPRESS (2022)

Article Radiology, Nuclear Medicine & Medical Imaging

On-Scalp Optically Pumped Magnetometers versus Cryogenic Magnetoencephalography for Diagnostic Evaluation of Epilepsy in School-aged Children

Odile Feys et al.

Summary: This study compared the effectiveness of cryogenic and on-scalp MEG in detecting and localizing focal interictal epileptiform discharges (IEDs) in children with epilepsy. The results showed that on-scalp MEG had higher IED amplitudes and signal-to-noise ratios compared to cryogenic MEG, and the localization value was similar between the two modalities.

RADIOLOGY (2022)

Article Chemistry, Analytical

Simulation Study of Different OPM-MEG Measurement Components

Urban Marhl et al.

Summary: This study explored the effect of combining multiple directions of magnetic field on source localization and found that the field direction normal to the scalp has a higher signal-to-noise ratio and is less affected by ambient noise, making it the optimal choice for source localization when only one field direction can be measured. Additionally, combining multiple field directions greatly improves the source localization results when using a low number of OPMs. Furthermore, sensors closer to the brain are more suitable for localizing deeper sources.

SENSORS (2022)

Article Neurosciences

Precision magnetic field modelling and control for wearable magnetoencephalography

Molly Rea et al.

Summary: This study introduces the potential of optically-pumped magnetometers (OPMs) in magnetoencephalography (MEG) experiments and emphasizes the importance of controlling background magnetic fields. The authors propose a magnetic field mapping technique that accurately reconstructs field magnitude and compensates for it through an electromagnetic coil system, significantly reducing low-frequency interference. This technology can improve data quality in experiments, especially those measuring low-frequency oscillations or encouraging head movement.

NEUROIMAGE (2021)

Article Neurosciences

Exploring MEG brain fingerprints: Evaluation, pitfalls, and interpretations

Ekansh Sareen et al.

Summary: The performance of MEG fingerprinting heavily depends on functional connectivity measures, frequency bands, identification scoring methods, and spatial leakage correction. Phase-coupling methods, central frequency bands (alpha and beta), and specific networks such as visual, frontoparietal, dorsal-attention, and default-mode networks show higher MEG fingerprinting performances. Cross-modality comparisons reveal spatial concordance in fingerprinting patterns between MEG and fMRI data, especially in the visual system. Additionally, multivariate correlation analyses indicate strong behavioral significance of MEG connectomes, with dependency on connectivity measures and temporal scales.

NEUROIMAGE (2021)

Article Neurosciences

Using OPMs to measure neural activity in standing, mobile participants

Robert A. Seymour et al.

Summary: This study demonstrates the potential of OP-MEG systems to capture neural activity during naturalistic paradigms involving movement. The results show that OP-MEG can record event-related fields from the auditory cortex consistently across different movement conditions. The study highlights the exciting possibility of using OP-MEG for scanning populations like young children who are difficult to study with stationary MEG systems.

NEUROIMAGE (2021)

Article Multidisciplinary Sciences

Brief segments of neurophysiological activity enable individual differentiation

Jason da Silva Castanheira et al.

Summary: The authors demonstrate that just seconds of brain activity can differentiate individuals, even when recorded weeks or months apart. Utilizing fMRI data, it is possible to distinguish individuals within a cohort and predict individual traits. The study extends the concept of a neural or brain fingerprint to fast and large-scale resting-state electrophysiological dynamics.

NATURE COMMUNICATIONS (2021)

Article Neurosciences

Theoretical advantages of a triaxial optically pumped magnetometer magnetoencephalography system

Matthew J. Brookes et al.

Summary: The optically pumped magnetometer (OPM) is an effective method for detecting magnetic fields generated by human brain activity, offering advantages of size, weight, and flexibility compared to traditional detectors. Optimized triaxial MEG array design can significantly improve the ability to differentiate real brain activity from magnetic interference sources.

NEUROIMAGE (2021)

Article Neurosciences

Measuring functional connectivity with wearable MEG

Elena Boto et al.

Summary: Optically-pumped magnetometers (OPMs) have the potential to improve data quality and wearability in magnetoencephalography (MEG), with results showing high similarity to state-of-the-art cryogenic MEG systems. This indicates the potential for OPMs to ultimately replace traditional sensors for MEG measurements.

NEUROIMAGE (2021)

Article Neurosciences

Potential of on-scalp MEG: Robust detection of human visual gamma-band responses

Joonas Iivanainen et al.

HUMAN BRAIN MAPPING (2020)

Article Multidisciplinary Sciences

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

Amir Borna et al.

PLOS ONE (2020)

Article Quantum Science & Technology

A conformal array of microfabricated optically-pumped first-order gradiometers for magnetoencephalography

N. V. Nardelli et al.

EPJ QUANTUM TECHNOLOGY (2020)

Article Multidisciplinary Sciences

Optical Co-registration of MRI and On-scalp MEG

Rasmus Zetter et al.

SCIENTIFIC REPORTS (2019)

Article Neurosciences

Towards OPM-MEG in a virtual reality environment

Gillian Roberts et al.

NEUROIMAGE (2019)

Article Multidisciplinary Sciences

A tool for functional brain imaging with lifespan compliance

Ryan M. Hill et al.

NATURE COMMUNICATIONS (2019)

Review Neurosciences

Magnetoencephalography for brain electrophysiology and imaging

Sylvain Baillet

NATURE NEUROSCIENCE (2017)

Article Neurosciences

Measuring MEG closer to the brain: Performance of on-scalp sensor arrays

Joonas Iivanainen et al.

NEUROIMAGE (2017)

Article Engineering, Biomedical

A 20-channel magnetoencephalography system based on optically pumped magnetometers

Amir Borna et al.

PHYSICS IN MEDICINE AND BIOLOGY (2017)

Article Neurosciences

Magnetoencephalography of Epilepsy with a Microfabricated Atomic Magnetrode

Orang Alem et al.

JOURNAL OF NEUROSCIENCE (2014)

Review Neurosciences

The relationship between MEG and fMRI

Emma L. Hall et al.

NEUROIMAGE (2014)

Article Instruments & Instrumentation

A magnetically shielded room with ultra low residual field and gradient

I. Altarev et al.

REVIEW OF SCIENTIFIC INSTRUMENTS (2014)

Article Engineering, Biomedical

Improving MEG Performance With Additional Tangential Sensors

Jussi Nurminen et al.

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING (2013)

Article Neurosciences

Online and offline tools for head movement compensation in MEG

Arjen Stolk et al.

NEUROIMAGE (2013)

Article Engineering, Biomedical

Multi-sensor magnetoencephalography with atomic magnetometers

Cort N. Johnson et al.

PHYSICS IN MEDICINE AND BIOLOGY (2013)

Article Neurosciences

Large-scale cortical correlation structure of spontaneous oscillatory activity

Joerg F. Hipp et al.

NATURE NEUROSCIENCE (2012)

Article Mathematical & Computational Biology

FieldTrip: Open Source Software for Advanced Analysis of MEG, EEG, and Invasive Electrophysiological Data

Robert Oostenveld et al.

COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE (2011)

Article Physics, Applied

Magnetoencephalography with a two-color pump-probe, fiber-coupled atomic magnetometer

Cort Johnson et al.

APPLIED PHYSICS LETTERS (2010)

Article Optics

Femtotesla atomic magnetometry in a microfabricated vapor cell

W. Clark Griffith et al.

OPTICS EXPRESS (2010)

Article Physics, Applied

Magnetoencephalography with an atomic magnetometer

H. Xia et al.

APPLIED PHYSICS LETTERS (2006)

Article Engineering, Biomedical

Spatiotemporal signal space separation method for rejecting nearby interference in MEG measurements

S Taulu et al.

PHYSICS IN MEDICINE AND BIOLOGY (2006)

Article Engineering, Electrical & Electronic

Applications of the signal space separation method

S Taulu et al.

IEEE TRANSACTIONS ON SIGNAL PROCESSING (2005)

Article Engineering, Biomedical

Performance of an MEG adaptive-beamformer source reconstruction technique in the presence of additive low-rank interference

K Sekihara et al.

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING (2004)

Article Multidisciplinary Sciences

A subfemtotesla multichannel atomic magnetometer

IK Kominis et al.

NATURE (2003)

Article Physics, Multidisciplinary

High-sensitivity atomic magnetometer unaffected by spin-exchange relaxation

JC Allred et al.

PHYSICAL REVIEW LETTERS (2002)

Article Biochemical Research Methods

Signal processing in magnetoencephalography

J Vrba et al.

METHODS (2001)