Child patient being scanned by a megnetoencephalographic scanner. She is reacting to visual stimulations projected onto a screen in front of her.The scanner detects the extremely small magnetic fields generated by neural activity in different parts of the brain. The resulting data is correlated with other neuro-imaging techniques to investigate psychiatric and neurological disorders such as ADHD, epilepsy and also age-related memory and cognitive syndromes such as Alzheimer's and dementia. The eye-tracking device in front of the subject gives data on the gaze related to the brain activity and also relays information on any blinking or head movement which may influence the neural currents under scrutiny.Photographed at the Oxford Centre for Human Brain Activity, UK.(Simulation by model).