Calibrating EEG Machines with ‘Phantom Head’

While electroencephalography (EEG) has been used for decades to measure voltage fluctuations in different parts of the brain to graph a person’s neural patterns, determine brain injuries, and monitor the effects of sedatives and anesthesia, “there are really no set standards within the EEG community of how you confirm the equipment is working the way you really think it is,” says David Hairston, a neuroscientist at the Army Research Lab’s Human Research and Engineering Directorate in Maryland.