Encephalograms, also known as electroencephalograms (EEGs), are tests that are commonly used to diagnose conditions affecting the brain, such as epilepsy, sleep disorders, and coma. However, there are various synonyms used for the word encephalograms, which include brainwave tests, neuroimaging tests, and electrocorticography. Brainwave tests refer to the measurement of the electrical activity in the brain, while neuroimaging tests usually include different types of brain-imaging, such as magnetic resonance imaging (MRI) or computed tomography (CT) scans. Electroencephalography is also known as electrocorticography, which refers to a type of EEG that involves placing electrodes directly on the surface of the brain. In summary, the term encephalograms simply refers to any test that measures activity in the brain.