An EEG, or Electroencephalogram, is a non-invasive medical test used to monitor and record the electrical activity of the brain. This diagnostic tool is invaluable in evaluating brain function, identifying abnormalities, and diagnosing various neurological conditions, including epilepsy, sleep disorders, and brain injuries. During an EEG, electrodes are placed on the scalp to detect electrical signals produced by brain cells. The resulting EEG wave patterns help neurologists assess brain health, identify seizure activity, and guide treatment decisions. EEGs play a critical role in understanding brain disorders, aiding in early diagnosis, and monitoring treatment progress, ultimately contributing to improved patient care and neurological research.