An Electroencephalogram also called an EEG, is a test that can help diagnose epilepsy. The electrical signals of the brain are recorded during an EEG. This electrical activity is detected by electrodes or sensors, placed on the patient's scalp and transmitted to a polygraph that records the activity. Electrical signals produced by the brain neurons are picked up by the electrodes and transmitted to a polygraph, where they produce separate graphs on moving paper using an ink writing pen or on a computer screen. Read more: Electroencephalogram (EEG) Article
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