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 ...

The tonic neck reflex (TNR) is also called the asymmetric (al) tonic neck reflex (ATNR). There’s also a symmetric (al) tonic neck reflex (STNR), which comes later in infancy and is less talked ...

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