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Reflexes are involuntary movements or actions. Some movements are spontaneous and occur as part of the baby's normal activity. Others are responses to certain actions. Healthcare providers check reflexes to determine if the brain and nervous system are working well. Some reflexes occur only in specific periods of development. The following are some of the normal reflexes seen in newborn babies:
This reflex starts when the corner of the baby's mouth is stroked or touched. The baby will turn their head and open their mouth to follow and root in the direction of the stroking. This helps the baby find the breast or bottle to start feeding. This reflex lasts about 4 months.
Rooting helps the baby get ready to suck. When the roof of the baby's mouth is touched, the baby will start to suck. This reflex doesn't start until about the 32nd week of pregnancy and is not fully developed until about 36 weeks. Premature babies may have a weak or immature sucking ability because of this. Babies also have a hand-to-mouth reflex that goes with rooting and sucking. So they may suck on their fingers or hands.
The Moro reflex is often called a startle reflex. That’s because it usually occurs when a baby is startled by a loud sound or movement. In response to the sound, the baby throws back their head, extends out their arms and legs, cries, then pulls the arms and legs back in. A baby's own cry can startle them and set off this reflex. The Moro reflex lasts until the baby is about 2 months old.
When a baby's head is turned to one side, the arm on that side stretches out and the opposite arm bends up at the elbow. This is often called the fencing position. This reflex lasts until the baby is about 5 to 7 months old.
Stroking the palm of a baby's hand causes the baby to close their fingers in a grasp. The grasp reflex lasts until the baby is about 5 to 6 months old. A similar reflex in the toes lasts until 9 to 12 months.
This reflex is also called the walking or dance reflex because a baby appears to take steps or dance when held upright with their feet touching a solid surface. This reflex lasts about 2 months.