An electrencephalogram (EEG) is test that identifies the presence of abnormalities in brain waves, or electrical activity of the brain. Small disc-like electrodes with wires attached, are place on the scalp. These electrodes detect electrical charges caused by activity of brain cells. The resulting charges are displayed on monitor for a neurologist to interpret the findings.
EEG is generally considered a safe procedure. There is no physical sensation produced and no risk of electric shock. Depending on a patient's medical condition there may be some risks; especially to those with a seizure disorder. The flashing lights or deep breathing can cause a seizure. Though this is rarely the case. If a seizure does arise it is treated immediately. It is important to discuss all medical conditions with the neurologist before conducting any procedure.