An electroencephalogram (EEG) is a test that uses sensors to evaluate electrical brain activity, also called brain waves.

How You Benefit

An EEG can help the neurology specialists at Portsmouth Regional Hospital diagnose a variety of neurological disorders—from a common headache and dizziness to stroke, head trauma, seizures, dementia and degenerative brain disease. EEG is also used to determine organic causes of psychiatric symptoms and disabilities in children.

What to Expect

During an EEG, a technician arranges electrodes in various places on your scalp to record activity in different regions of the head. An EEG is painless and does not create an electrical shock. The procedure usually takes about 60 minutes.

Learn more about electroencephalograms, including what to expect, in our online Health Library.

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