A 20-channel magnetoencephalography system based on optically pumped magnetometers

Borna, Amir; Carter, Tony R.; Goldberg, Josh D.; Colombo, Anthony P.; Jau, Yuan-Yu; Berry, Christopher; McKay, Jim; Stephen, Julia; Weisend, Michael; Schwindt, Peter D. D.

doi:10.1088/1361-6560/aa93d1

Title: A 20-channel magnetoencephalography system based on optically pumped magnetometers

Journal Article · Mon Oct 16 00:00:00 EDT 2017 · Physics in Medicine and Biology

DOI:https://doi.org/10.1088/1361-6560/aa93d1· OSTI ID:1429765

Borna, Amir ^[1]; Carter, Tony R. ^[1]; Goldberg, Josh D. ^[2]; Colombo, Anthony P. ^[1]; Jau, Yuan-Yu ^[1]; Berry, Christopher ^[3]; McKay, Jim ^[4]; Stephen, Julia ^[5]; Weisend, Michael ^[6]; Schwindt, Peter D. D. ^[1]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Aegis Technologies Group Inc., Albuquerque, NM (United States)
Infinera Corporation, Sunnyvale, CA (United States)
Candoo Systems Inc., Coquitlam, BC (Canada)
The Mind Research Network and Lovelace Biomedical and Environmental Research Inst., Albuquerque, NM (United States)
Rio Grande Neurosciences, Inc., Santa Fe, NM (United States); Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Neurosurgery

In this paper, we describe a multichannel magnetoencephalography (MEG) system that uses optically pumped magnetometers (OPMs) to sense the magnetic fields of the human brain. The system consists of an array of 20 OPM channels conforming to the human subject's head, a person-sized magnetic shield containing the array and the human subject, a laser system to drive the OPM array, and various control and data acquisition systems. We conducted two MEG experiments: auditory evoked magnetic field and somatosensory evoked magnetic field, on three healthy male subjects, using both our OPM array and a 306-channel Elekta-Neuromag superconducting quantum interference device (SQUID) MEG system. The described OPM array measures the tangential components of the magnetic field as opposed to the radial component measured by most SQUID-based MEG systems. Finally, herein, we compare the results of the OPM- and SQUID-based MEG systems on the auditory and somatosensory data recorded in the same individuals on both systems.

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Research Organization:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); National Inst. of Health (NIH) (United States)

Grant/Contract Number:: NA0003525; R01EB013302

OSTI ID:: 1429765

Report Number(s):: SAND2017-4181J; 652641

Journal Information:: Physics in Medicine and Biology, Vol. 62, Issue 23; ISSN 0031-9155

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 76 works

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60 APPLIED LIFE SCIENCES
47 OTHER INSTRUMENTATION
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
magnetoencephalography
optically pumped magnetometer (OPM)
auditory evoked magnetic field (AEF)
somatosensory evoked magnetic field (SEF)
superconducting quantum interference device (SQUID)
spin-exchange relaxation-free (SERF)
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Title: A 20-channel magnetoencephalography system based on optically pumped magnetometers

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Cited By (14)

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