EEG (Electro-Encephalogram)  Your brain is a highly complex
organ made up of billions of cells. The brain cells send and
receive messages to and from all parts of your body. These
messages are electrical impulses that create brain waves.  How
does an EEG work?  An EEG is a test that records the electrical
impulses in your brain through metal discs placed on your scalp.
EEG is the short name for electro-encephalogram (ee-LEK-tro-en-
SEF-uh-low-gram). The test results show brain wave patterns in
different parts of your brain and if the patterns are normal or
abnormal. The EEG test helps to detect or rule out conditions
such as epilepsy, stroke, brain tumors, trauma, coma, or brain
death. An EEG is a safe, easy, and painless test. There are no
known risks from an EEG.   How do I prepare for the test?  Wash
your hair the night before the test. Do not use hair spray,
conditioner, or gels. Your hair must be clean and oil free.    •
Do not drink any caffeine drinks, such as tea, coffee, and
sodas, for 24 hours before