A 20-channel magnetoencephalography system based on optically pumped magnetometers

• Published in: Physics in medicine & biology Vol. 62; no. 23; pp. 8909 - 8923
• Main Authors: 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
• Format: Journal Article
• Language: English
• Published: England IOP Publishing 10.11.2017
• Subjects: 60 APPLIED LIFE SCIENCES; Adult; auditory evoked magnetic field (AEF); Brain - physiology; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; diffractive optical element (DOE); Humans; Magnetic Fields; magnetoencephalography; Magnetoencephalography - instrumentation; Magnetometry - instrumentation; Male; Optical Phenomena; optically pumped magnetometer (OPM); OTHER INSTRUMENTATION; somatosensory evoked magnetic field (SEF); spin-exchange relaxation-free (SERF); superconducting quantum interference device (SQUID)

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 th...