0-3 months: there is amniotic fluid residue in the middle ear of the newborn baby, which can be fully absorbed after a few days. At this time, the baby can not hear a weak voice, but can hear a larger voice. If there is a sudden sound of more than 60 decibels, the baby is very easy to be frightened, and will shake, blink, frown, rapidly flex the forearm, clench hands, cry, pant or even stop eating.
4-6 months: the baby can recognize the mother’s voice. When talking to your baby, he may look at you with his eyes, or focus on listening to your voice and stop other actions, turn his head to the sound source, and show the ability to sense the familiar voice.
7-11 months: the baby can turn to the direction of sound source actively, that is to say, he has the ability to identify the direction of sound. When he hears the mother’s teasing voice, he can laugh. Some babies even follow the mother’s instructions to do corresponding actions.
1-1.5 years old: the baby can respond according to the language he hears. When he asks where “nose”, “eyes” and “mouth” are, he will point them out with his small hand. Through various other sounds in the environment, we can also observe the auditory response and start the language learning.
Four key points of early detection of hearing impairment
The mother should be very careful if the baby:
1. For babies aged 1-3 months, when you clap your hands loudly in his ear, he has no response: or when the baby is asleep, he can’t be awakened by a loud voice.
2. At 8-12 months old, the baby did not turn around when he heard the familiar voice, or heard people’s voice without corresponding babbling.
3. The 1.5-year-old baby can’t say some words that are easy to pronounce, such as “Mom” and “Dad”, or you ask him to do the actions you taught him, he will never do them.
4. 2-year-old babies, if they don’t look with their eyes, can’t follow some simple commands you give them.
If you suspect that your baby has hearing impairment, you must go to a hospital or a special hearing institution as soon as possible to do a professional hearing test to confirm whether your baby really has hearing loss, so as to take early intervention measures.
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Link：Attention should be paid to children's hearing impairment
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