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What is a brainstem auditory evoked potential?

A test that records the function of the pathway between the ear and the brain.

What should I do before the test?

Please wash your hair and do not use any hair products

Take your medication as usual unless directed by your doctor

Eat as normal

Bring a list of medication with you

What will happen during the test?

  • A healthcare scientist will explain the procedure to you and answer any questions you may have. They will need to take a clinical history from you.
  • Your head will be measured using a tape measure and small marks drawn on with a skin pencil (this will wash off easily)
  • Electrodes (wires with small metal disks on) with be attached to your head using sticky paste or glue (this will also be removed easily)
  • You will be asked to lie on a bed and wear some headphones.
  • The headphones deliver a clicking sound in one ear and a continuous "static" noise in the other
  • The healthcare scientist will remove the electrodes and wipe clean with water.
  • The whole test should take under an hour. If your child is the patient this time can vary depending on their cooperation and attention.

How will I get my results?

The results will be analysed by a consultant neurophysiologist and sent back to the doctor who requested the test. This should happen within 10 working days of the test.

Contact details

To change your appointment or if you have any questions please contact the neurophysiology department on 0117 3428254

Please allow plenty of time to get to your appointment. Parking is particularly difficult. If you are more than 15 minutes late we may not be able to perform the test. If you are unable to attend your appointment please inform the department as soon as possible by calling the number above.