Electroencephalography (EEG) cap, 1999.
© Science Museum / Science & Society Picture Library
Made by Neuramedical supplies. EEG is the acronym for electroencephalography, the meaurement and recording of electrical activity in the brain. When attached to the subject's skull, the electrodes connected to the cap pick up the tiny electrical currents coming from the brain, that can determine normal and adnormal brain activity. Neurological disorders such as epilepsy can be detected in this way.