Loops all the way up: Recurrency as an implementation-first primitive for consciousness.

Consciousness science is fragmented, and empirical investigations are largely confined within the framework of each theory of consciousness (ToC). Proliferating ToCs accumulate anomalies without progress, operating orthogonally. The principle of recurrency, functional and architectural, specifies a unifying, mechanistic scaffold for consciousness to arise. We show that all theories tacitly invoke feedback loops and can be re-expressed along a single axis of recursion. Four nested levels, viz., cellular, local inter-areal, global, and lateral, map onto state consciousness, phenomenal (P) content, conscious access (A), and phenomenal character, respectively, thus tying evolved anatomy to phenomenality. The classical P-A distinction dissolves into a graded cascade wherein deeper recursion expands the set of reportable, behaviour-driving variables. Recurrency, defined as structural, causal, and/or functional feedforward and feedback connections between elements within a system, is favoured in biological architectures, and supports the closed-loop interactions between brain, body, and environment that underlie adaptive behaviour and self-related processing. Disparities in the explanatory mechanisms across theories of consciousness can thus be resolved by converging onto this shared principle on the implementation axis, rather than deal with phenomenal-first or functional-first ontologies. The field urgently requires this implementation-first distillation that is biologically plausible, mechanistic, and empirically testable.