EEG Test

What Is an EEG?

An EEG (Electroencephalogram) is a safe, painless test that records the electrical activity in your brain. It helps doctors understand how your brain is working and is often used to investigate symptoms like:

• Seizures
• Blackouts or fainting
• Unexplained collapses
• Memory or concentration problems

You don’t feel anything during the test it just records what’s already happening inside your brain.

What Happens During the Test?

• A trained clinical physiologist will place small sensors (called electrodes) on your scalp using a special paste.
• You’ll be asked to relax in a chair or lie down.
• The test takes about 30 to 60 minutes.
• You might be asked to open and close your eyes, breathe deeply, or look at a flashing light — this helps the team see how your brain responds.

EEGs are completely safe. There are no needles or shocks, and it does not read your thoughts or emotions.

How Do I Prepare?

• Wash your hair the night before and don’t use any gel, spray, or oils.
• Eat normally before the test — don’t fast unless told to.
• Bring a list of any medications you’re taking.
• If you’re having a sleep-deprived EEG, you’ll be asked to stay awake for part or all of the night before.

After the Test

You can usually go home or return to work/school straight after your EEG. There are no side effects. The results will be sent back to the doctor who referred you.

If you had a sleep-deprived EEG, you should not drive until you’ve had some rest.