Newborn babies may seem helpless, but they’re born with an incredible set of primitive reflexes that showcase their natural instincts and biology. From the startle reflex to rooting, discover ...

Your baby's newborn reflexes – called developmental reflexes or primitive reflexes – are survival instincts triggered by their central nervous system. A reflex can be a spontaneous movement ...

The STNR is a primitive reflex that is characterized by upper extremity (UE) extension and lower extremity (LE) flexion with neck extension, and by UE flexion and LE extension with neck flexion.