1, otoacoustic emission: According to the types of stimuli, it can be divided into transient evoked otoacoustic emission, distortion product otoacoustic emission and frequency stimulated otoacoustic emission. Otoacoustic emission (OAE) is a non-invasive technique, which is simple to operate. It only takes 10 minute to detect both ears. This method is often used for newborn hearing screening.
2. Automatic auditory brainstem evoked potential technology: comprehensively check the functional status of newborn cochlea, auditory nerve conduction pathway and brainstem. For newborns with high risk factors of hearing loss, it is best to use OAE and/or AABR for hearing screening to avoid missed diagnosis.
Neonatal hearing self-test
1 Generally speaking, 1-2-month-old babies react strongly to loud sounds. For example, if the door is closed loudly or the glass is broken, the baby will be frightened; Another example is setting off firecrackers in the New Year. The sound of firecrackers will also make the baby cry.
2. If the baby is 6 months old, he will be more sensitive to sound and his expression will be clearer. When the baby is crying in another room, the mother's soothing voice, such as "be good, baby, stop crying, mother is coming", will calm the baby down and may calm the baby's fluctuating mood.
When the baby is 9 months old, he can crawl and even walk. At this time, if a smaller object, such as a building block, falls to the ground next to the baby, the baby will look up and down.