The retrieved literature consistently supports the neurobiological consensus that primitive reflexes and early motor behaviors are mediated by subcortical structures (such as brainstem circuits, the basal ganglia, and spinal-supraspinal pathways) prior to complete cortical maturation and inhibition. Papers [3], [5], [10], and [11] directly link reflex behaviors and their control or reemergence to subcortical and brainstem mechanisms. No retrieved papers refute this claim.