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Magnetoencephalography

Magnetoencephalography or MEG is a non-invasive neuroprosthetic technique which functions by measuring changes in the tiny electromagnetic field that surrounds the brain.

The problem that arises is that the electromagnetic field is weak compared to normal background noise. So, special highly sensitive detectors called superconducting quantum interference devices or SQUDS are used to minimise this ratio. Even so, they can only detect the field itself. Special algorithms are utilised to try and determine the rough location in the brain.

See Also: SQUIDS, Inverse Problem

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Magnetoencephalography

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(13/12/2012)
An important method for brain research and diagnosis is magnetoencephalography (MEG). But the MEG systems are so expensive that not all EU countries have one today. A group of Swedish researchers are now showing that MEG can be performed wi...


(01/12/2008)
Faint magnetic signals from brain activity in children with autism show that those children process sound and language differently from non-autistic children. Identifying and classifying these brain response patterns may allow researchers t...


(05/11/2007)
A tiny sensor that is not much bigger than a grain of rice can detect magnetic fields as weak as those produced by a mouse's heart.

The sensor, known as an atomic magnetometer, could be used sensing brain activity. It can de...


(03/10/2008)
Vahe Poghosyan and Andreas A. Ioannides at the RIKEN Brain Science Institute in Wako have announced what they believe to be proof that the sights or sounds a person is most focussed on, actually diminish processing of other sensory data of ...


(28/07/2012)
Researchers at Aalto University in Finland have developed the world's first device designed for mapping the human brain that combines whole-head magnetoencephalography (MEG) and magnetic resonance imaging (MRI) technology. MEG measures the...