The electrical signals in your brain are measured and recorded by an EEG (electroencephalogram). A technician instals little metal discs (electrodes) on your head during an EEG. The electrodes are connected to a machine that provides information about your brain activity to your healthcare professional. Your provider can use brain activity to diagnose and monitor illnesses that impact your brain.
EEGs are routinely used by healthcare providers to check for seizure activity associated with epilepsy. EEGs can also be used to track health concerns or determine the source of particular symptoms.
An EEG may be used by doctors during brain surgery or to assess the activity of someone in a coma.