The EEG is a clinical examination of the bioelectrical activity of brain tissue, which is recorded by amplifying the EEG instrument. For testing a 2-hour EEG, the testing time is 2 hours. After the test, the images are analyzed and integrated by the doctor to make a preliminary assessment and determine whether there is a disease, such as abnormal waveforms or frequency abnormalities. For the analysis of the EEG 2-hour test results, the analysis takes about 1-2 hours. Due to more clinical work, most hospitals take the results of the 2-hour EEG test on the 2nd day and evaluate whether there is a disease based on the doctor’s results. If epilepsy is diagnosed, the type of epilepsy can be determined, and drugs are selected clinically for oral administration according to the type of epilepsy. EEG review tests are also required when necessary after oral administration of drugs.