We are often told that playing music to your unborn child can increase their brain development, but parents often ask, “Can my baby even hear the music or hear me talking”?
Well, the answer is: Yes, they can!
While your baby’s ears start to develop at around 7 weeks gestation, it takes some time for their ears to mature and send signals to the brain. Studies have shown that the earliest detection of sound in utero is at 19 weeks gestation. At first, they may only be able to hear low-pitched sounds, like a mother’s heartbeat or bodily sounds (yes, that rumbling tummy that tells you to eat more, can be heard by your new developing soul!). However, as the cochlear (the inner ear organ of hearing) and the auditory neural pathways (the highways to the brain) develop, your baby will be able to hear more sounds and may even start responding with movement or kicking, around 24 weeks of gestation.
Why Does My Baby Not Always Respond to Dad’s Voice?
The amniotic fluid surrounding the baby will muffle environmental sounds, so these sounds will be heard at a much softer volume than the sounds inside your body. Therefore, your baby will hear your own voice at a much louder volume than any external sounds. The baby will become more familiar with your voice than other voices as they can hear you more clearly than other voices. (Tell Dad to talk right next to your belly, and see what happens then 😊)
How Can I Stimulate My Baby’s Hearing While Pregnant?
While there is no research evidence that playing music to your baby in utero will improve their IQ, there is certainly no harm in playing music to your baby and continuing with normal daily sounds, and your developing baby may show some interesting responses (such as quietening down or livening up)!
Research has shown that the greatest behavioural in-utero responses by babies, are recorded in response to a mother’s voice. Therefore, reading or singing to your baby may stimulate their auditory development more than external music. The familiarity with mom’s voice has also shown positive effects once a baby is born, as they already recognize your signature sound.
Babies who are born prematurely have shown positive effects when listening to recordings of their mom’s heartbeat and voice, even while in Neonatal Intensive Care. This familiar auditory stimulation helps to regulate heartbeat (which is likely to show contentment) and improve their newly developing auditory processing.
Can Noise Exposure Affect My Babies Hearing While Pregnant?
Although there is insufficient data to support this, prolonged exposure to very loud noises during pregnancy may contribute to foetal hearing loss, as very loud sound over an extended period of time is known to contribute towards damage to the cochlear hair cells in adults.
Have Your Baby’s Hearing Tested at Birth
It is important to regularly have your babies hearing tested, and we can screen your baby’s hearing from 48 hours after birth. This is pivotal in ensuring that any risk of hearing loss is identified as early as possible. Early intervention has a positive impact on speech, language and learning for your baby. Contact us if you are in Cape Town! Our rooms are conveniently located in Sea Point, Durbanville, Hout Bay, Wynberg and Noordhoek.
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My baby loves it when he hears dad’s voice. It’s the sweetest thing ever