Abstract
<p>Clinical observation identified a reproducible recovery hierarchy in catatonia, the Saito Loop (πs → β → πm → πv_fast → πv_slow), but not why recovery should follow any fixed order. We ask whether the order follows from an active-inference architecture without being supplied. The five computational quantities follow a priori from their computational roles; structural identifiability analysis then reconstructs their prerequisite relations as a directed acyclic graph. Because the graph is a chain, its topological ordering is unique and identical to the Saito Loop: the order is a structural consequence of the dependency relations, not a fitted sequence, and the complete ordering is never supplied. All uniqueness claims hold within an explicitly specified model class, and whether the structural order is realized in recovery time is a separate, falsifiable dynamical question. The clinically observed recovery hierarchy therefore becomes a constrained computational consequence rather than an empirical regularity.</p>