%0 Journal Article
%A Dammers, Jürgen
%A Chocholacs, Harald
%A Eich, Eberhard
%A Boers, Frank
%A Faley, Michael
%A Dunin-Borkowski, Rafal
%A Shah, N. J.
%T Source localization of brain activity using helium free interferometer
%J Applied physics letters
%V 104
%@ 1077-3118
%C Melville, NY
%I American Institute of Physics
%M FZJ-2014-03439
%P 213705
%D 2014
%X To detect extremely small magnetic fields generated by the human brain, currently all commercial magnetoencephalography (MEG) systems are equipped with low-temperature (low-Tc) superconducting quantum interference device (SQUID) sensors that use liquid helium for cooling. The limited and increasingly expensive supply of helium, which has seen dramatic price increases recently, has become a real problem for such systems and the situation shows no signs of abating. MEG research in the long run is now endangered. In this study, we report a MEG source localization utilizing a single, highly sensitive SQUID cooled with liquid nitrogen only. Our findings confirm that localization of neuromagnetic activity is indeed possible using high-Tc SQUIDs. We believe that our findings secure the future of this exquisitely sensitive technique and have major implications for brain research and the developments of cost-effective multi-channel, high-Tc SQUID-based MEG systems.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000337143000063
%R 10.1063/1.4880097
%U https://juser.fz-juelich.de/record/154014