The asymmetrical tonic neck reflex is a primitive reflex found in newborn humans that normally vanishes around 6 months of age. It is also known as the bow and arrow or "fencing reflex" because of the characteristic position of the infant's arms and head, which resembles that of a fencer.

What is the purpose of the ATNR reflex?

This reflex helps the fetus move the head from side to side while swinging the arms and kicking the legs. The ATNR is actively involved in the birthing process as the fetus 'unwinds' itself out of the birth canal, and is essential for an uncomplicated natural delivery.

Is ATNR reflex normal?

Sometimes, primitive reflexes, including ATNR, can continue beyond their expected timelines. The usual timeframe for ATNR is usually between five to seven months when your child is learning complex motor skills like sitting up.