Electroencephalogram (EEG) is a medical test that measures the electrical activity of the brain. It involves placing electrodes on the scalp to detect and record the electrical signals generated by the brain's neurons. These signals are then amplified and recorded by a machine as a series of wavy lines known as an EEG recording.
EEG is a non-invasive test that can provide valuable information about brain function and is often used to diagnose conditions such as epilepsy, sleep disorders, and brain injuries. EEG can also be used to monitor brain activity during surgeries, to determine the level of brain function in comatose patients, and to study brain activity during cognitive tasks or in research settings