What Are Reflexes?
Reflexes are your body’s built-in safety net – rapid, automatic responses designed to protect you. Imagine touching something hot: before you even notice the pain, your hand snaps away. These lightning-fast reactions don’t wait for your brain to think; they work instantly to keep you safe.
What Are Infant Reflexes?
Babies arrive with a remarkable set of primitive reflexes – their very first survival tools. These instinctive movements start before birth, helping the foetus move into position in the womb and even supporting the birthing process. At birth, they trigger that crucial first breath, kickstart the bladder and bowels, and make feeding instinctive through rooting and sucking.
In the early weeks and months, these reflexes play a vital role. The grasp reflex means a newborn can cling tightly to your finger. The Moro reflex (that sudden startle with wide arms) helps babies react to unexpected movement or sound. Each reflex has a purpose in keeping little ones alive and thriving.
Growing Out of Reflexes
As your baby’s brain matures, these automatic patterns slowly give way to voluntary, controlled movements. By around 18 months, most primitive reflexes have faded, replaced by more mature responses. This natural progression is essential for milestones like crawling, walking, and later skills such as writing and balancing.
Why Do Reflexes Matter?
Infant reflexes are not just fascinating quirks – they are stepping stones in brain development. If they linger longer than expected, they can sometimes affect movement, coordination, or learning. That’s why health professionals check them as an important sign of healthy nervous system development.
Interestingly, these reflexes can even reappear later in life if the nervous system comes under stress, injury, or illness – a signal that something deeper may be happening.
At Baby College, our classes gently support this incredible journey, helping reflexes fade in good time and paving the way for confident, coordinated movement as babies grow.
Examples of Infant Reflexes
Newborns arrive with an extraordinary toolkit of reflexes that help them adjust to life outside the womb. These instinctive movements may look surprising, but each serves an important purpose in early survival and development. Here are some of the key reflexes you might notice in your baby:
Root Reflex
The root reflex helps a baby find the breast or bottle for feeding. When their cheek or lip is gently stroked, they instinctively turn their head and open their mouth towards the touch. This reflex is especially important in the early weeks and usually fades in breastfed babies by around three weeks of age.
Suck Reflex
Working hand in hand with rooting, the suck reflex ensures that once a baby latches on, they can feed effectively. When the roof of the mouth is touched, sucking begins automatically. This reflex develops in the womb from about 32 weeks and is well established by 36 weeks – which is why premature babies may sometimes need extra support with feeding. You may also notice a hand-to-mouth version, as babies often comfort themselves by sucking fingers or hands.
Moro Reflex (Startle Reflex)
One of the most dramatic reflexes, the Moro is triggered by a sudden noise, movement, or change in position. A startled baby will throw back their head, stretch out their arms and legs, then quickly pull the arms back in with clenched fists – often accompanied by a cry. It usually fades by three months but can linger up to six months.
Tonic Neck Reflex (Fencing Reflex)
When a baby turns their head to one side, the arm on that side straightens while the opposite arm bends, creating a pose like a tiny fencer. This reflex is thought to help hand-eye coordination and usually disappears between 6 and 7 months.
Palmar Grasp Reflex
Present even before birth (detectable as early as 16 weeks in the womb), this reflex is responsible for that surprisingly strong newborn grip. Stroke a baby’s palm and they’ll hold on tightly – sometimes strong enough to support their own weight. It gradually fades by around 6 months.
Babinski Reflex (Plantar Reflex)
When the sole of a baby’s foot is stroked, the big toe bends back and the other toes fan out. This is perfectly normal in babies and usually disappears by age three as the nervous system matures. In adults, by contrast, the same action causes the toes to curl downward instead.
Step Reflex
Also known as the walking or dancing reflex, this appears when a newborn is held upright with their feet touching a flat surface. They will instinctively make stepping motions, as if practising for future walking. Though it disappears within the first couple of months, it plays an important role in building the muscle strength and patterns needed for those all-important first steps.
