Answer:
An electroencephalograph (EEG)
Explanation:
Basically, the brain generates subtle electrical signals from the brain cells and nerves that transmit messages one to another. The electroencephalograph (EEG) system can detect and record those electrical signals. If people have signs that may be due to a seizure, they will be recommended to get an EEG. It is also used to diagnose conditions like brain damage from a head injury, head stroke, encephalitis, epilepsy, etc.