Brainstem Auditory Evoked Potential

This test examines the integrity of auditory pathway through the brainstem. The sound enters ear canal and stimulates auditory nerve. The electrical impulse travels from auditory nerve through the brainstem to auditory cortex. During testing, the patient hears the repetitive click sound through the earphone.

BAER is recommended for following diseases:

  • Hearing problem.
  • Dizziness/ Vertigo.
  • Multiple Sclerosis.
  • Tumours of the Brainstem.
  • Head Injuries.
  • Delayed development in children.
  • Jaundice in children.

Details of Procedure:

  • The procedure is carried in a sound proof room.
  • The stimulus is provided using headphone in one ear followed by second ear.
  • The electrical response is recorded by small metal plates (electrodes).
  • The test is not painful.


  • Hair should be washed, dried, with no oil, gel, spray etc.
  • For children who are uncooperative sedation may be required.
  • The procedure usually take approximately 30 minutes.

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