Elektroensefalografi (EEG) is a medical test that measures electrical activity in the brain. It involves placing small electrodes on the scalp, which detect and record brain waves. This information helps doctors understand brain function and diagnose conditions like epilepsy, sleep disorders, and other neurological issues. The procedure is non-invasive and typically takes about 20 to 40 minutes. Patients are usually asked to relax or sleep during the test. The results can provide valuable insights into brain health and guide treatment options for various neurological disorders.