Evidence map›Paper›PMID 40363199›Full record

ArticleSensors (Basel, Switzerland)2025

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

Mainak Jas, John Kamataris, Teppei Matsubara, Chunling Dong, Gabriel Motta, Abbas Sohrabpour, Seppo P Ahlfors, Matti Hämäläinen, Yoshio Okada, Padmavathi Sundaram

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Sensors (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors.

Mainak JasAthinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02129, USA.
John KamatarisAthinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02129, USA.
Teppei MatsubaraAthinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02129, USA.
Chunling DongAthinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02129, USA.
Gabriel MottaAthinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02129, USA.
Abbas SohrabpourAthinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02129, USA.ORCID 0000-0001-5442-9177
Seppo P AhlforsAthinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02129, USA.ORCID 0000-0001-7674-6931
Matti HämäläinenDepartment of Neuroscience and Biomedical Engineering, School of Science, Aalto University, 02150 Espoo, Finland.
Yoshio OkadaAthinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02129, USA.
Padmavathi SundaramAthinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Boston, MA 02129, USA.

Funding

Training and Dissemination CoreP41EB030006 · NIBIB · MASSACHUSETTS GENERAL HOSPITAL · PI Susie Yi Huang · 2020 to 2026
$10.9M
Scalable Software for Distributed Processing and Visualization of Multi-Site MEG/EEG DatasetsR01NS104585 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI MATTI HAMALAINEN · 2018 to 2026
$4.3M
Cellular Mechanisms of Transcranial Magnetic Stimulation in Cerebellar CortexR01NS112183 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI PATEL, PADMAVATHI SUNDARAM · 2021 to 2025
$2.9M
TRIUX neo MEG system UpgradeS10OD030469 · OD · MASSACHUSETTS GENERAL HOSPITAL · PI AHLFORS, SEPPO PENTTI · 2021 to 2021
$2.0M
Developing and Assessing Wearable MEG for ChildrenR21NS140619 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI Mainak Jas · 2025 to 2026
$451k
NIBIB NIH HHS P41 EB030006NIH HHS S10 OD030469NINDS NIH HHS R01 NS104585NINDS NIH HHS R01 NS112183NINDS NIH HHS R21 NS140619
6 · The paper itself

Abstract

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 copper wire. Here, we developed a precise and reproducible manufacturing process by fabricating these coils on two-layer printed circuit boards (PCBs). Building on open-source software (bfieldtools), we developed a pipeline to determine the optimal current loops of 1.5 × 1.5 m

Indexed as

MagnetoencephalographyMagnetometryEquipment DesignHumansfield nullingmagnetoencephalographyoptically pumped magnetometerprinted circuit boardssomatosensory evoked field

Identifiers

PMID40363199
PMCPMC12074179

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

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.