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Moro reflex. The Moro reflex is often called a startle reflex because it usually occurs when a baby is startled by a loud sound or movement. In response to the sound, the baby throws back his or her head, extends out the arms and legs, cries, then pulls the arms and legs back in. A baby's own cry can startle him or her and trigger this reflex. This reflex lasts about 5 to 6 months. Tonic neck reflex. 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.
In Infants, there are reflexes called Moro, rooting, and sucking. Many of the reflexes of infants are lost as they grow older. For example, sucking from a nipple for food is different than using a straw. Use of the straw is not response to stimulus, and therefore not a reflex.Reflexes follow a Reflex ARC. The Arc is through the spinal cord. While the information gets sent to the brain (you know you touched something hot, or you are choking and coughing), the reflex totally by-passes the brain.he signal goes up the sensory nerve to the spinal cord and then down a motor nerve to produce the motion. All of the processing of the signal is done in the spinal cord. An autonomic reflex involves different centers in the brain and does not always trigger motion.