Word patterns
Research has shown that listening to your voice in the womb relaxes your baby and lowers their heart rate, laying the foundations for both bonding and early language development. Amazingly, scientists have also discovered that unborn babies respond positively to word patterns, like nursery rhymes, that they can remember hearing before.
“Incredible new research shows that unborn babies can remember what they hear, laying the foundations for language development.”
Learning to hear
Hearing develops in a set sequence during pregnancy. The cochlea (responsible for translating soundwaves) are well formed by 15 weeks of pregnancy and fully functional by 20 weeks, but are not connected to the brain until around 24–30 weeks1. So although sound goes into the ears, the baby’s brain does not ‘hear’ it until the third trimester. Meanwhile the baby is already learning about life inside the womb through smell, touch and movement. By talking to your bump you can help your baby learn about the outside world too.
It’s your voice that they will love the most, and it will continue to comfort them long after they are born.
The first thing your baby will probably hear is the inner workings of your body: your heartbeat, breathing and the gurgles of your food digesting2. But the most important sound to them will be your voice, which is thought to be the most intense sound they can hear in the womb3. After that, if the sounds are loud enough or close enough, they can also hear what is going on around you, reacting to music, sudden noises and getting to know the voices of other family members. But it’s your voice that they will love the most, and it will continue to comfort them long after they are born.
Pre-birth memories
By measuring foetal heart rates, it’s been found that unborn babies react differently to being exposed to the same story or nursery rhyme over and over again for a few weeks, compared to when they hear a story for the first time.
Their heart rate goes down when they hear familiar word patterns, indicating that it relaxes them. Even more amazingly they can remember hearing the words even if there is a gap of a few weeks between readings, and even if someone else reads them4. They can also continue to recognise them for a short period as a newborn, so by reading a regular bedtime story or rhymes to your bump, you can create your baby’s very first memories.
Next Steps
- During your third trimester why not choose a favourite nursery rhyme or short story and try reading it aloud once a day.
- Find a quiet spot by yourself, take a deep breath, and relax. It’s been proven that high levels of stress can affect your baby’s immunity 5,6, so spending some calm time connecting with your baby may be beneficial in more ways than one.
- If reading to your bump really isn't for you, don’t worry, your baby is learning about your voice every time you speak, so the bond will grow naturally.
- Look out for changes in your baby’s behaviour. Remember your baby will find your voice calming, so expect less movement rather than more.
- See if your baby reacts differently to a range of sounds – singing, for example, a rattle, or someone else’s voice.
- Dad and siblings can get involved too – they’ll have to get nice and close to the bump to make sure they’re heard.
Learn more about what your baby hears in the womb and how you can encourage their early development through our Hello In There series.
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