Cross-Level Coupling as a Necessary Condition for Consciousness: An Empirical Challenge to Neural Sufficiency Models

This paper advances a testable challenge to the assumption that neural integration alone is sufficient for consciousness. The Integrative Field Model (IFM) proposes that consciousness depends on the integrity of cross-level coupling, particularly between neural and interoceptive systems. It introduces a decisive empirical prediction: selective disruption of interoceptive–neural coupling, under conditions of preserved large-scale neural integration, will degrade conscious coherence despite intact large-scale neural integration. This prediction establishes a direct empirical dissociation between single-level integration theories (including Integrated Information Theory, Global Neuronal Workspace Theory, and standard predictive processing) and multi-level field models. Experimental and clinical paradigms capable of testing this claim are outlined. The outcome of these tests determines whether neural integration alone is sufficient for consciousness or whether multi-level coupling is constitutive.