What is it for?
This is to record your brain's electrical activity and is typically used to evaluate for seizures or confusion.
What is the test like?
A trained technician will apply special sensors (electrodes) to your scalp with a washable glue. You will then lie quietly for 20 minutes during which the technician may ask you questions or to follow simple instructions. When the test is over, the electrodes are removed and you are free to go. A physician will then read your EEG and send the results to your odering physician typically within two to three days.
How do I prepare?
Your doctor may ask you to stop taking certain medications prior to the test (such as sleeping aids, muscle relaxants and seizure medications). Since the electrodes need to stick to your scalp, it is important that your hair is clean and free from oils or lotions. Your doctor may need you to be sleep-deprived before the test which typically means that you don't sleep the night before. If this is the case, you will need someone to drive you to and from the appointment.