An Electroencephalogram (EEG) is a painless procedure which uses electrodes (small, flat metal discs attached to your scalp to detect electrical activity in your brain). Your brain cells communicate via electrical impulses and are active all the time, even when you are asleep. This activity shows up as wavy lines on an EEG recording. EEG is one of the main diagnostic tests for epilepsy. An EEG may also play a role in diagnosing other brain disorders.
An EEG can determine changes in your brain activity which may be useful in diagnosing brain disorders, especially epilepsy. An EEG may be helpful to confirm, rule out or provide information tht helps with management of the disorders such as:
To prepare for an EEG:
You may feel little or no discomfort during an EEG. The electrodes don’t transmit any sensations. They just record your brain waves. During the test:
After the EEG test, the technician removes the electrodes or cap. If no sedative was given, you should feel no side effects after the procedure, and you can return to your normal routine. If you have used a sedative, it may take about an hour to partially recover from the medication. You will need someone to take you home because it can take up to a day for the full effects of the sedative to wear off. Rest and do not drive for the day.