High- T c superconducting quantum interference device recordings of spontaneous brain activity: Towards high- T c magnetoencephalography

We have performed single- and two-channel high transition temperature (high- T c ) superconducting quantum interference device (SQUID) magnetoencephalography (MEG) recordings of spontaneous brain activity in two healthy human subjects. We demonstrate modulation of two well-known brain rhythms: the o...

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Bibliographic Details
Published inApplied physics letters Vol. 100; no. 13; pp. 132601 - 132601-4
Main Authors Öisjöen, F., Schneiderman, J. F., Figueras, G. A., Chukharkin, M. L., Kalabukhov, A., Hedström, A., Elam, M., Winkler, D.
Format Journal Article
LanguageEnglish
Published American Institute of Physics 26.03.2012
Subjects
biomagnetic measurements
field magnetic-resonance
Fysik
meg
oscillations
Physical Sciences
squid magnetometers
system
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ISSN0003-6951
1077-3118
1077-3118
DOI10.1063/1.3698152

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Summary:We have performed single- and two-channel high transition temperature (high- T c ) superconducting quantum interference device (SQUID) magnetoencephalography (MEG) recordings of spontaneous brain activity in two healthy human subjects. We demonstrate modulation of two well-known brain rhythms: the occipital alpha rhythm and the mu rhythm found in the motor cortex. We further show that despite higher noise-levels compared to their low- T c counterparts, high- T c SQUIDs can be used to detect and record physiologically relevant brain rhythms with comparable signal-to-noise ratios. These results indicate the utility of high- T c technology in MEG recordings of a broader range of brain activity.
ISSN:0003-6951
1077-3118
1077-3118
DOI:10.1063/1.3698152