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If you are not sure then you should ask the doctor who organised the test for you. There are many reasons why a doctor may have arranged for you to have an EEG test. Some EEGs such as sleep deprived recordings may take longer (see below) Why am I having an EEG investigation? It takes about 30 minutes to set up the recording and another 30 minutes for the recording itself. How long does the investigation take?Ī routine EEG takes about 1 hour. No part of the test will be carried out without your agreement. In some departments you may also be recorded on video during your test which can be useful if you have an attack during your test. It is important that you mention any concerns you have or if there is something that particularly worries you such as flashing lights. The person doing the test will explain what he or she wishes you to do at all times. Finally a bright light may be flashed at different speeds in front of you. At some stage you may be asked to breathe deeply (controlled hyperventilation) for a few minutes. If you are sufficiently relaxed, you may be allowed to fall asleep for a short while. For most of the recording you will be asked to remain relaxed with your eyes closed. During the recording you will be asked to open and close your eyes. Your heartbeat will also be recorded using some pads usually attached to your arms.
How long does it take to get eeg results skin#
Gentle scratching of the skin underneath each electrode is required to get a good recording. Usually a number of electrodes need to be stuck to the scalp either with a paste or with special glue and compressed air to quickly dry it. What does the investigation involve?Īn EEG involves recording electrical signals from the brain or “brain waves” a bit like a cardiograph (ECG) records electrical activity from the heart. My EEG Investigation What does EEG stand for?ĮEG stands for electro-encephalo-gram: a recording of the electrical activity of the brain.