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Title: Auditory evoked field measurement using magneto-impedance sensors

The magnetic field of the human brain is extremely weak, and it is mostly measured and monitored in the magnetoencephalography method using superconducting quantum interference devices. In this study, in order to measure the weak magnetic field of the brain, we constructed a Magneto-Impedance sensor (MI sensor) system that can cancel out the background noise without any magnetic shield. Based on our previous studies of brain wave measurements, we used two MI sensors in this system for monitoring both cerebral hemispheres. In this study, we recorded and compared the auditory evoked field signals of the subject, including the N100 (or N1) and the P300 (or P3) brain waves. The results suggest that the MI sensor can be applied to brain activity measurement.
Authors:
; ; ;  [1] ; ;  [2]
  1. Graduate School of Engineering, Nagoya University, Nagoya (Japan)
  2. Aichi Steel Corporation, Tokai (Japan)
Publication Date:
OSTI Identifier:
22409946
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 60 APPLIED LIFE SCIENCES; BACKGROUND NOISE; BRAIN; COMPARATIVE EVALUATIONS; HUMAN POPULATIONS; IMPEDANCE; MAGNETIC FIELDS; MONITORING; SENSORS; SHIELDS; SIGNALS; SQUID DEVICES