Evolution of MEG: A first MEG-feasible fluxgate magnetometer.

Authors :: Koshev N
Butorina A
Skidchenko E
Kuzmichev A
Ossadtchi A
Ostras M
Fedorov M
Vetoshko P
Source :: Human brain mapping [Hum Brain Mapp] 2021 Oct 15; Vol. 42 (15), pp. 4844-4856. Date of Electronic Publication: 2021 Jul 30.
Publication Year :: 2021
Abstract: In the current article, we present the first solid-state sensor feasible for magnetoencephalography (MEG) that works at room temperature. The sensor is a fluxgate magnetometer based on yttrium-iron garnet films (YIGM). In this feasibility study, we prove the concept of usage of the YIGM in terms of MEG by registering a simple brain induced field-the human alpha rhythm. All the experiments and results are validated with usage of another kind of high-sensitive magnetometers-optically pumped magnetometer, which currently appears to be well-established in terms of MEG.<br /> (© 2021 The Authors. Human Brain Mapping published by Wiley Periodicals LLC.)