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26 Mar 2012

Volume 100, Issue 13, Articles (13xxxx)

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Appl. Phys. Lett. 100, 133701 (2012); http://dx.doi.org/10.1063/1.3696019 (3 pages)

Hewei Liu, Feng Chen, Qing Yang, Pubo Qu, Shengguan He, Xianhua Wang, Jinhai Si, and Xun Hou
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High-Tc superconducting quantum interference device recordings of spontaneous brain activity: Towards high-Tc magnetoencephalography

F. Öisjöen, J. F. Schneiderman, G. A. Figueras, M. L. Chukharkin, A. Kalabukhov, A. Hedström, M. Elam, and D. Winkler

Appl. Phys. Lett. 100, 132601 (2012); http://dx.doi.org/10.1063/1.3698152 (4 pages) | Cited 2 times

Online Publication Date: 27 March 2012

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We have performed single- and two-channel high transition temperature (high-Tc) 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-Tc counterparts, high-Tc 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-Tc technology in MEG recordings of a broader range of brain activity.
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87.19.le EEG and MEG
87.85.D- Applied neuroscience
85.25.Dq Superconducting quantum interference devices (SQUIDs)
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