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The Auditory Brainstem Response (ABR) test is a safe, non-invasive procedure that evaluates how sound travels from your ears to your brainstem. It uses electrodes and sound stimuli to check the function of the auditory nerve and brain pathways.
As a result, healthcare professionals can detect hearing loss or neurological conditions without needing the patient to respond actively.
Doctors use the ABR test for several important reasons:
To assess hearing ability in newborns, infants, or people who can’t complete traditional hearing tests.
To diagnose conditions like sensorineural hearing loss, auditory neuropathy, or brainstem abnormalities.
To detect tumors such as acoustic neuromas that may affect the auditory nerve.
To support early detection, especially in newborn hearing screening programs.
In addition, the test helps confirm whether hearing pathways in the brain are functioning correctly.
Here’s how the process typically goes:
A specialist places small electrodes on your scalp and near your ears.
You then wear earphones that play a series of clicking sounds or tones.
As your ears hear the sounds, your brain responds with electrical signals.
The system records how quickly and accurately these signals reach your brainstem.
Unlike traditional hearing tests, the ABR test doesn’t require any verbal response. Therefore, it’s ideal for infants or individuals with communication challenges.
The ABR test offers several advantages:
It’s painless, safe, and non-invasive
It helps identify hearing problems early, even before symptoms appear
It assists in diagnosing neurological or auditory pathway disorders
It’s suitable for all ages, including newborns and young children
Moreover, it provides objective results that do not rely on patient input.
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