When did the newborn begin to have hearing?

The newborn's hearing has been gradually formed in the fetal period, and has basically developed by the time of 6~7 months of pregnancy. Medical research has proved that newborns blink when stimulated by ultrasonic waves, which proves that hearing ability has developed in fetal period. Normal newborn babies will have directional auditory responses as soon as they are born.

Babies born three days ago have a preference for their mothers' voices. When her mother is talking, she will turn her head away. At the same time, babies begin to be sensitive to external sounds, and many babies will cry when they hear sudden vibration or close the door loudly. A month later, the baby's hearing is fully developed, which means she can hear as many voices as her parents, but she still can't tell the meaning behind the voices.

I remember that after my baby was born, she was just taken from the delivery room to the ward. At that time, she was wrapped in a small bag, revealing only a small head, her eyes tightly closed, and her little hand tightly grasped. She doesn't seem to know the outside world. I laughed at her as if she were sitting still. At this moment, her silly father suddenly said to her enthusiastically, Baby! Baby! I'm dad! Look, dad! As a result, my newborn daughter actually opened her eyes and took a look at her father, then closed it again. Make her silly father happy, why can't a daughter who has decided to meet her family be calm? Can only say fate! Hahaha! This incident further confirmed the accuracy of neonatal audiology research.

Ma Bao should take good care of the baby's hearing, because although the baby's hearing has been developed, the hearing organs are still developing. Compared with adults, the baby's external auditory canal is not only short and narrow, but also the eardrum is thin, and its tolerance to excessive sound is poor. Ma Bao should be careful not to make a loud noise, so as not to damage the baby's hearing. Severe noise can also cause the baby's noise deafness, which is easy to scare the baby.