ATNR begins while your baby is in the womb and can even be seen as early as 18 weeks during pregnancy. This reflex may help babies move through the birth canal during vaginal deliveries.

Asymmetric tonic neck reflex, or ATNR, is one of the primitive reflexes that babies experience as part of brain development. These reflexes are crucial because they help your baby to survive and ...

Learn about your baby’s symmetric tonic neck reflex (STNR), including its relationship with other primitive reflexes, including TLR and ATNR.