EEG (Electroencephalogram) is a diagnostic test that records electrical activity in the brain using electrodes placed on the scalp. It is commonly used to detect neurological disorders such as epilepsy, seizures, sleep disorders, and brain injuries. The test measures brain wave patterns and helps doctors assess abnormal activity that may indicate medical conditions. EEG is a painless and non-invasive procedure that provides real-time data on brain function. It can be performed while the patient is awake or asleep, depending on the condition being evaluated. EEG plays a crucial role in diagnosing and monitoring brain-related disorders for effective treatment planning.