Your doctor will let you know if you need to stop taking any of your medicines beforehand. It’s also best to avoid food or drinks that contain caffeine (including coffee, tea, cola and chocolate) for at least 8 hours before the test. Avoid using conditioners, hairsprays, styling gels or other hair products. Wash your hair the night before or the day of the test, so that the discs stay attached to your scalp. Sometimes EEGs are conducted when you have purposely been sleep-deprived. You may be asked to do some deep breathing, look at a flashing light or sleep during the test.Īn EEG takes about an hour, but may be longer for a sleep recording. An Amb EEG uses a digital recording system to record brain activity for 24-72 hours while you go about your daily routine. You will need to keep still during the test. Ambulatory EEG (AMB EEG) An Ambulatory EEG (Amb EEG) is a safe, painless test, which will record the electrical activity produced by your brain.
You won’t feel any sensations from the discs. These discs are also attached to wires that send the electrical signals to a computer to record the brain waves. They are usually kept in place with a sticky paste.
What does an EEG test involve?ĭuring the EEG, flat metal discs (electrodes) will be placed all over your scalp. Although an EEG is one of the main tools for diagnosing epilepsy, a negative or normal EEG test does not necessarily rule out epilepsy.
The brain works by a series of nerve impulses which cause electrical.
If something is unusual about the brain’s electrical activity, it will show up in the EEG recording. An electroencephalogram (EEG) is a test that looks at the function of the brain. This electrical activity is shown on a computer as ‘brain waves’, which are interpreted by a specialist doctor. It records patterns of activity during rest and in response to certain. An EEG records the electrical signals sent between brain cells. An EEG evaluates brain function by measuring the electrical activity within the brain.