EEG, short for electroencephalogram, is a non-invasive medical test that measures and records the electrical activity of the brain. This is done by placing small electrodes on the scalp, which detect and amplify the brain’s electrical signals. These signals are then displayed as a series of wavy lines on a computer screen or paper, allowing doctors to analyze and diagnose various brain disorders such as epilepsy, sleep disorders, and brain tumors. EEG is a valuable tool in understanding the complex workings of the brain and is often used in conjunction with other diagnostic tests to provide a comprehensive evaluation of a patient’s neurological health.