More advanced and cheaper to run, the OPM-MEG brain scanner is one of only 14 in the world and the only one in Ireland. This makes it possible to study brain activity while doing more typical tasks during the day or scan children and people with brain disorders. Magnetoencephalography (MEG) is a neuroimaging technique that measures brain activity by detecting magnetic fields produced by electrical currents in the brain. The OPM-MEG scanner is “the most important breakthrough in human brain imaging in the last two decades”, said Prof Redmond O’Connell, director of the new MEG facility at Trinity. It’s a gamechanger for researchers working on brain disorders and wider research on the human brain,” O’Connell said.