JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY
Editorial use only.
Magnetoencephalograph (MEG) scanner consisting of 306 highly sensitive SQUIDs (Superconducting Quantum Interface Devices) which detect the extremely small magnetic fields and associated gradients generated by neural activity in different parts of the brain. The SQUIDs require to be cooled to the temperature of liquid helium (-269¼C) in order to pick up these tiny signals and so most of the upper part of the scanner consists of a tank to house the helium. Photographed at the Oxford Centre for Human Brain Activity, UK.
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