a miniature earphone and microphone are placed in the ear, sounds are played and a response is measured. If a baby hears normally, an echo is reflected back into the ear canal and this is picked up by the microphone
when a baby has a hearing loss, no echo can be measured on the OAE test
Auditory Brainstem Response
auditory brainstem response or ABR
sounds are played to the baby’s ears
bandaid like electrodes that are placed on the baby’s head detect brainwaves
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