how long does it take to do an eeg test
The test itself will take about 30-60 minutes. Placing the electrodes usually takes 20 minutes, but can take up to an hour, so the entire procedure may take about one to 2 hours.If you have an ambulatory EEG, brain activity is recorded for 24 hours or more.ometimes your doctor will ask for an ambulatory EEG, where brain activity is recorded for a longer period of time (usually 24 hours) away from the hospital.