What is an EEG?

The electroencephalogram measures and records the electric activity of the brain, much like the electrocardiogram records the activity of the heart. Abnormalities can be detected by studying the wave patterns recorded by a computer. Multiple channels of data from the brain are analyzed to evaluate brain activity. The test normally takes about an hour. You will be asked to avoid caffeinated beverages and stimulants on the day of your test. Certain shampoos, products, and hair sprays effect the electrical waves and theses, too, should be avoided.

Back to All Questions