At what age does the Moro/startle reflex typically disappear in infants?

The Moro reflex, also known as the startle reflex, typically disappears around 4 months of age in infants. This reflex is an involuntary response to a sudden loss of support or a loud sound, causing the baby to extend their arms and legs, then quickly retract them as if embracing for safety.

By the time an infant reaches approximately 4 months, the nervous system has matured sufficiently, and the reflexive behavior decreases as the child gains more voluntary control over their movements. At this stage, infants begin to develop greater muscle tone and coordination, allowing them to engage in more purposeful motor activities.

More significant developmental milestones occur after this period, making it vital to monitor such reflexes to assess neurological development. Therefore, understanding the timeline of reflex disappearance is crucial for evaluating an infant's growth and development.