EEG
Alternative names:
brain wave test; electroencephalogram
Normal values:
The brain waves have a normal frequency, amplitude, and characteristics.
What abnormal results mean:
Abnormal findings may indicate seizure disorders (epilepsy, convulsions), brain tumor, brain abscess (infection), head injury, encephalitis (inflammation of the brain), hemorrhage (abnormal bleeding caused by a ruptured blood vessel), cerebral infarct (tissue that is dead because of a blockage of the blood supply), narcolepsy (sleep epilepsy), Alzheimer's disease, and cerebral death.
Additional conditions under which the test may be performed:
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