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from Wikipedia, the free encyclopedia


Electroencephalography is the neurophysiologic measurement of the electrical activity of the brain by recording from electrodes placed on the scalp or, in special cases, on the cortex.

The resulting traces are known as an electroencephalogram (EEG) and represent so-called brainwaves.

Note:   The above text is excerpted from the Wikipedia article "Electroencephalography", which has been released under the GNU Free Documentation License.
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November 27, 2015

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updated 12:56 pm ET