ArticleNeuroImage2019
On-scalp MEG system utilizing an actively shielded array of optically-pumped magnetometers.
Article in NeuroImage, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 80 papers.
What it found
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Who cites it
80 citing papers in PubMed, 258 citations in OpenAlex.
- Enhanced Neural Decoding With Optically Pumped Magnetometer MEG Using Multivariate Pattern Analysis.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2026Article
- SPM-30 years and beyond.Cerebral cortex (New York, N.Y. : 1991) · 2025Review
- Simultaneously Acquired Magnetoencephalography and Diffuse Optical Tomography Data Reveals Correlated Somatosensory Activity.Human brain mapping · 2025Article
- Using Wearable MEG to Study the Neural Control of Human Stepping.Sensors (Basel, Switzerland) · 2025Article
- Biplanar Nulling Coil System for OPM-MEG Using Printed Circuit Boards.Sensors (Basel, Switzerland) · 2025Article
- Wearable Magnetoencephalography in a Lightly Shielded Environment.IEEE transactions on bio-medical engineering · 2025Article
- Performance Portrait Method: Robust Design of Predictive Integral Controller.Biomimetics (Basel, Switzerland) · 2025Review
- Inferring laminar origins of MEG signals with optically pumped magnetometers (OPMs): A simulation study.Imaging neuroscience (Cambridge, Mass.) · 2025Article
- Beyond sensitivity: what are the enabling opportunities of OPM-MEG?Frontiers in medical technology · 2025Article
- Comparing MEG and EEG measurement set-ups for a brain-computer interface based on selective auditory attention.PloS one · 2025Article
- Combining video telemetry and wearable MEG for naturalistic imaging.Imaging neuroscience (Cambridge, Mass.) · 2025Article
- Demonstrating equivalence across magnetoencephalography scanner platforms using neural fingerprinting.Imaging neuroscience (Cambridge, Mass.) · 2025Article
- A novel, robust, and portable platform for magnetoencephalography using optically-pumped magnetometers.Imaging neuroscience (Cambridge, Mass.) · 2024Article
- An optically pumped magnetic gradiometer for the detection of human biomagnetism.Quantum science and technology · 2024Article
- Automatic Estimation of the Interference Subspace Dimension Threshold in the Subspace Projection Algorithms of Magnetoencephalography Based on Evoked State Data.Bioengineering (Basel, Switzerland) · 2024Article
- A Novel, Robust, and Portable Platform for Magnetoencephalography using Optically Pumped Magnetometers.bioRxiv : the preprint server for biology · 2024Article
- Adaptive multipole models of optically pumped magnetometer data.Human brain mapping · 2024Article
- Combining OPM and lesion mapping data for epilepsy surgery planning: a simulation study.Scientific reports · 2024Article
- Article
- Recent Developments in Fabrication Methods and Measurement Schemes for Optically Pumped Magnetic Gradiometers: A Comprehensive Review.Micromachines · 2023Review
20 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
The spatial resolution of magnetoencephalography (MEG) can be increased from that of conventional SQUID-based systems by employing on-scalp sensor arrays of e.g. optically-pumped magnetometers (OPMs). However, OPMs reach sufficient sensitivity for neuromagnetic measurements only when operated in a very low absolute magnetic field of few nanoteslas or less, usually not reached in a typical magnetically shielded room constructed for SQUID-based MEG. Moreover, field drifts affect the calibration of OPMs. Static and dynamic suppression of interfering fields is thus necessary for good-quality neuromagnetic measurements with OPMs. Here, we describe an on-scalp MEG system that utilizes OPMs and external compensation coils that provide static and dynamic shielding against ambient fields. In a conventional two-layer magnetically shielded room, our coil system reduced the maximum remanent DC-field component within an 8-channel OPM array from 70 to less than 1 nT, enabling the sensors to operate in the sensitive spin exchange relaxation-free regime. When compensating field drifts below 4 Hz, a low-frequency shielding factor of 22 dB was achieved, which reduced the peak-to-peak drift from 1.3 to 0.4 nT and thereby the standard deviation of the sensor calibration from 1.7% to 0.5%. Without band-limiting the field that was compensated, a low-frequency shielding factor of 43 dB was achieved. We validated the system by measuring brain responses to electric stimulation of the median nerve. With dynamic shielding and digital interference suppression methods, single-trial somatosensory evoked responses could be detected. Our results advance the deployment of OPM-based on-scalp MEG in lighter magnetic shields.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.