The new meg scanners measure and record the brain's magnetic fields that are caused by the brain's electrical activity.Another word for them is Magneto-encephalopgraphy scanners and doctors currently use them to measure detailsa bout epilepsy, brain tumors and pain perception.
There are 100 MEG scanners around the world and they cost $2 million each.
The scanners track the magnetic signals that neurons throw off as they communicate.
Mr. Greg Simpson of the University of California in San Francisco said" you can look at the networks of the brain talking to each other".
The MEG is better than the MRI scan because it tells us which center of the brain, the language cortex or the visual cortex, is sending a magnetic flow to which other part of the brain.
Some scientists are trying to use the MEG scanners to see if the brain waves can be harnessed to control devices outside of the brain.
What do you think of this new testing? Would you want someone dear to you to use it?