MEG scan head sensors

Numéro d’image : 13297882
MEG scan head sensors
MEG scan head sensors. A man fitted with sensors prior to being scanned by a magnetoencephalograph (MEG) scanner. MEG is a functional neuroimaging technique which maps brain activity by recording magnetic fields produced by the electrical currents naturally occurring in the brain. Unlike electroencephalography (EEG) scanners, these typically use highly sensitive SQUIDs (Superconducting Quantum Interference Devices) to detect the extremely small magnetic fields and associated gradients generated by neural activity in different parts of the brain. By measuring the minute changes in magnetic fields generated by the cerebral cortex while resting, while thinking and while engaged in some particular task, deficits in the brain can be measured and localized. The resulting data may be used to investigate psychiatric and neurological disorders such as ADHD, epilepsy and age-related memory and cognitive disorders such as Alzheimer's disease and dementia. Photographed at the National Intrepid Center of Excellence (NICoE) at the Walter Reed National Military Medical Center, Bethesda, Maryland, USA, on 21 March 2017.
Licence : Droits gérés
Crédit: Science Photo Library / US AIR FORCE / J.M. Eddins Jr.l
Taille de l’image : 4986 px × 3505 px
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