Neurosciences Diagnostic Testing
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Brainstem Auditory Evoked Response (BAER)
Brainstem auditory evoked response is a test to measure the brain wave activity that occurs in response to clicks or certain tones. The test may also be referred to as Evoked Auditory Potentials; Brainstem Auditory Evoked Potentials or Evoked Response Audiometry.
How the Test is Performed
You lie on a bed and remain still. Electrodes are placed on your scalp and on each earlobe. The earphones give off a brief click or tone. The electrodes pick up the brain's responses to these sounds and record them. You do not need to be awake for this test.
How to Prepare for this Test
You may be asked to wash your hair the night before the test.
How the Test Will Feel
There is little discomfort.
The test is done to help diagnose nervous system problems and hearing losses (especially in low birth weight newborns), and to assess neurological functions.
There are no risks.