The electroencephalogram (EEG) is a measure of brain waves. It is a test that provides evidence of how the brain functions over time. The EEG is used in the evaluation of brain disorders. Most commonly it is used to show the type and location of the activity in the brain during a seizure. It is a very effective test for diagnosing Epilepsy or cause of unexplained Seizure also called `Mirgi' in Hindi. The results of this test are reported by Neurologists.