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Related Experiment Video

Updated: May 8, 2026

Interictal High Frequency Oscillations Detected with Simultaneous Magnetoencephalography and Electroencephalography as Biomarker of Pediatric Epilepsy
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Multi-sensor magnetoencephalography with atomic magnetometers.

Cort N Johnson1, P D D Schwindt, M Weisend

  • 1Sandia National Laboratories, PO Box 5800, Albuquerque, NM 87185-1082, USA. cort.johnson@alum.mit.edu

Physics in Medicine and Biology
|August 14, 2013
PubMed
Summary

Researchers detected human brain magnetic fields using advanced atomic magnetometers. This breakthrough enables non-cryogenic magnetoencephalography for better brain activity mapping.

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Area of Science:

  • Biophysics
  • Neuroscience
  • Sensor Technology

Background:

  • Magnetoencephalography (MEG) traditionally requires cryogenic cooling, limiting its widespread application.
  • Atomic magnetometers offer a potential alternative for non-invasive brain activity measurement.

Purpose of the Study:

  • To demonstrate the feasibility of using rubidium spin-exchange-relaxation-free (SERF) magnetometers for magnetoencephalography (MEG).
  • To develop a multi-sensor atomic magnetometer system for detecting human brain magnetic fields.

Main Methods:

  • Utilized two independent, simultaneously operating rubidium SERF magnetometers.
  • Recorded evoked responses from auditory stimulation in multiple subjects using multi-channel magnetometers placed on opposite sides of the head.
  • Applied advanced signal processing techniques to multi-channel measurements for enhanced signal quality.

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Last Updated: May 8, 2026

Interictal High Frequency Oscillations Detected with Simultaneous Magnetoencephalography and Electroencephalography as Biomarker of Pediatric Epilepsy
10:22

Interictal High Frequency Oscillations Detected with Simultaneous Magnetoencephalography and Electroencephalography as Biomarker of Pediatric Epilepsy

Published on: December 6, 2016

Detecting Pre-Stimulus Source-Level Effects on Object Perception with Magnetoencephalography
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Detecting Pre-Stimulus Source-Level Effects on Object Perception with Magnetoencephalography

Published on: July 26, 2019

Functional Mapping with Simultaneous MEG and EEG
06:04

Functional Mapping with Simultaneous MEG and EEG

Published on: June 14, 2010

Main Results:

  • Successfully detected magnetic fields from the human brain using atomic magnetometers.
  • Demonstrated the first multi-sensor atomic magnetometer magnetoencephalography system.
  • Achieved improved signal quality through multi-channel measurements and signal processing.

Conclusions:

  • This study presents a novel, non-cryogenic approach to magnetoencephalography.
  • The developed framework supports the creation of a whole-head atomic magnetometer array for advanced source localization.
  • Paves the way for more accessible and potentially portable brain imaging technologies.