EEG stands for Electroencephalogram. It is a diagnostic test that records the electrical activity of the brain using small, flat metal electrodes that are attached to the scalp.
An EEG measures the electrical signals that are generated by the brain's neurons and records them on a graph. The test can help diagnose various neurological conditions, including seizures, epilepsy, brain tumours, and sleep disorders.
EEG is a non-invasive procedure that is usually performed in a hospital or clinic. The person undergoing the test is typically asked to relax and remain still while the electrodes are attached to their scalp. The test can take anywhere from 20 minutes to several hours, depending on the reason for the test and the complexity of the results.
Interpreting an EEG requires specialized training and expertise. A neurologist or neurophysiologist typically reviews the EEG results and makes a diagnosis based on the recorded electrical activity.