<Research Reports>Development of Optically Pumped Magnetometers and Application to Magnetoencephalography

Abstract

The application of optically pumped magnetometers (OPMs) to magnetoencephalography (MEG) has been actively studied in recent years. MEG is a non-invasive technique for measuring neural activity in the brain, and due to the recent helium shortage, OPM sensors are being explored as an alternative to conventional SQUID sensors. This paper discusses the principles and performance evaluation of SERF OPMs and scalar-mode OPMs, as well as their application to visually evoked magnetic field measurements