An electroencephalogram (EEG) is a test used to record the electrical activity of the brain. The test is used in a variety of circumstances but most typically in issues of seizures, coma, epilepsy, brain tumors, and brain death determinations. It is also used in diagnosis of Alzheimer's disease. Please take a look at these useful references.
Chapter Electroencephalogram
Article BRAIN TUMOUR DETECTION VIA EEG SIGNALS
Article An empirical EEG analysis in brain death diagnosis for adults
Article Diagnosis of Alzheimer’s disease with Electroencephalography...
Article Diagnosis of Alzheimer Disease using EEG Signals
An EEG, or electroencephalogram, is a test that records the electrical signals of the brain. Doctors use it to help diagnose epilepsy and sleep disorders.
A Neurodiagnostic technologist (NDT) specializes in recording electrical activity in the brain and nervous system for diagnostic purposes. They use specialized equipment to determine how effectively a patient's nervous system is functioning.
The test results that are gathered enable physicians to diagnose and treat conditions such as degenerative brain diseases, headaches, dizziness, seizure disorders, strokes, mental disorders, and sleep disorders. By recording electrical patterns throughout these systems, neurodiagnostic technologists provide valuable data that physicians use to make diagnoses and treat conditions.