High-T-c superconducting quantum interference device recordings of spontaneous brain activity: Towards high-T-c magnetoencephalography
Journal article, 2012

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.

field magnetic-resonance

meg

oscillations

system

biomagnetic measurements

squid magnetometers

Author

Fredrik Öisjöen

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Justin Schneiderman

University of Gothenburg

Gerard Amoros Figueras

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Maxim Chukharkin Leonidovich

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Alexei Kalaboukhov

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Anders Hedström

Sahlgrenska University Hospital

Mikael Elam

University of Gothenburg

Dag Winkler

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 100 13 Article Number: 132601- 132601

Subject Categories

Physical Sciences

DOI

10.1063/1.3698152