If you know that you are going to have a sleep-deprived EEG, plan to have someone drive you to and from the test. If your child is going to be tested, try to keep him or her from taking naps just before the test. You may be asked not to sleep at all the night before the test or to sleep less (about 4 or 5 hours) by going to bed later and getting up earlier than usual. To find certain types of abnormal electrical activity in the brain, you may have to be asleep during the recording. Do not put any hair conditioner or oil on after shampooing. Shampoo your hair and rinse with clear water the evening before or the morning of the test. Since the electrodes are attached to your scalp, make sure your hair is clean and free of sprays, oils, creams, and lotions. These medicines can affect your brain’s usual electrical activity and cause abnormal test results.ĭo not eat or drink foods that have caffeine (such as coffee, tea, cola, and chocolate) for 12 hours before the test.
Your doctor may ask you to stop taking certain medicines (such as sedatives and tranquilizers, muscle relaxants, sleeping aids, or medicines used to treat seizures) before the test. Help find out if a person has a physical problem (problems in the brain, spinal cord, or nervous system) or a mental health.Watch brain activity while a person is receiving general anesthesia during brain surgery.Study sleepdisorders, such as narcolepsy.Find out if a person who is in a comais brain-dead.Help find out a person’s chance of recovery after a change in consciousness.Check for problems with loss of consciousness or dementia.EEG is the most useful and important test in confirming a diagnosis of epilepsy. Diagnose epilepsyand see what types of seizures are occurring.Why It Is Done?Īn electroencephalogram (EEG) may be done to: Certain conditions, such as seizures, can be seen by the changes in the normal pattern of the brain’s electrical activity. The computer records your brain’s electrical activity on the screen or on paper as wavy lines. Special sensors ( electrodes) are attached to your head and hooked by wires to a computer.
An electroencephalogram ( EEG) is a test that measures and records the electrical activity of your brain.
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