Electroencephalogram (EEG)

An electroencephalogram procedure with woman wearing cap

An EEG may be done to study seizures, study sleep disorders, or help find the location of a tumor, an infection, or bleeding. An EEG technologist attaches a cap with fixed electrodes on your head. (An EEG can also be done without a cap by using several individual electrodes.) The electrodes are hooked by wires to a machine that records the electrical activity inside the brain. The machine shows the electrical activity as a series of wavy lines on a computer screen.

ByHealthwise Staff

Primary Medical Reviewer Anne C. Poinier, MD - Internal Medicine

Adam Husney, MD - Family Medicine

Specialist Medical Reviewer Colin Chalk, MD, CM, FRCPC - Neurology

Martin J. Gabica, MD - Family Medicine

Current as ofOctober 1, 2015

Current as of: October 1, 2015

Author: Healthwise Staff

Medical Review: Anne C. Poinier, MD - Internal Medicine & Adam Husney, MD - Family Medicine & Colin Chalk, MD, CM, FRCPC - Neurology & Martin J. Gabica, MD - Family Medicine