What is the purpose of an EEG?
by 
-Freedom Issues- Minnesota nice
ANSWERS: 2
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Sorry Tom, but that is not at all what an EEG is. Notice the "electro" in the name of the procedure, as this prefix denotes something involving electricity. The prefix for blood is "angio". An EEG is a test used to detect abnormalities in the electrical activity of the brain. Electrodes are placed on the scalp to read this electrical activity, and the data is presented as a series of graphs of brainwaves (alpha, beta, delta, theta, etc.). The procedure you're talking about, that of injecting a dye into the brain and then studying the vascular system, is called an angiogram. An X-ray-blocking dye is injected into the brain, and then an X-ray is taken that allows doctors to see the cerebral blood vessels.
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The EEG tests for brain abnormalities: tumors, epylepsy that kinda thing
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