The autonomic hierarchy, as treated within the depth-psychology and somatic-clinical corpus, designates the phylogenetically ordered sequence of neural circuits — dorsal vagal, sympathetic, and ventral vagal — whose graduated activation governs an organism’s movement between states of social engagement, mobilized defense, and collapsed immobilization. The concept derives its systematic articulation from Stephen Porges’s Polyvagal Theory and achieves its most clinically elaborated form in the therapeutic translations of Deb Dana. Within this literature the hierarchy is not merely a descriptive anatomical schema but an explanatory architecture: beliefs, behaviors, and embodied responses are understood as expressions of one’s current position along this layered continuum, and the therapeutic project is explicitly framed as cultivating flexible, self-aware movement across its levels. Dana’s contributions emphasize that the ventral vagal state anchors the apex of the hierarchy as the locus of safety and connection, while dorsal collapse occupies the evolutionary basement. A persistent tension in the corpus concerns the direction of clinical influence — whether somatic state shapes narrative or narrative reshapes somatic state — resolved provisionally by the insistence that physiology and psychology operate in a ‘persistent and enduring loop.’ The hierarchy thus functions simultaneously as a neurobiological map, a clinical metaphor, and an instrument of psychoeducation.