Multi-Level Mutual Coupling Theory of Consciousness: A Unified Neuroscientific Framework Integrating Temporal Dynamics, Relational Coupling, and Observer-Dependent Architecture

Dominant neuroscientific frameworks conceptualize consciousness as an intrinsic property of individual brains, isolating subjective experience from the relational, temporal, and environmental contexts in which it arises. This paper proposes the Multi-Level Mutual Coupling Theory of Consciousness (MLMCT)—a unified theoretical framework that reconceptualizes conscious experience as a dynamically emergent phenomenon arising from the coordinated interaction of three levels of neural coupling: intra-individual (within-brain synchronization), inter-individual (brain-to-brain coupling), and organism-environment (enactive coupling). The framework rests on three foundational principles. First, conscious experience is constitutively delayed relative to physical reality—arising from post-hoc neural integration rather than direct sensory capture. Second, this temporal delay is dynamically compensated by a biologically instantiated coupling protocol—the Mutual Coupling Unit (MCU)—a nonlinear dynamical attractor that emerges from the reciprocal interaction between prediction error P(t) and behavioral synchrony S(t). Third, the quality and architecture of conscious experience are inherently observer-dependent: coupling is not an absolute property of a system but is constituted relative to the observing agent's coupling history and protocol compatibility. Grounded in predictive processing theory (Friston, 2005; Clark, 2013), inter-brain synchronization research (Hasson et al., 2012; Stephens et al., 2010), simulation and mirror neuron systems (Gallese et al., 2007; Rizzolatti & Craighero, 2004), and nonlinear dynamical systems modeling, the MLMCT provides: (1) a formally specified mathematical model with biologically anchored parameters; (2) a bifurcation analysis identifying four clinically relevant dynamical regimes; (3) a principled account of autism spectrum conditions as epistemological protocol incompatibility; (4) extension of the coupling framework to non-human mammals as evidence for an evolutionary continuum of consciousness; and (5) a set of falsifiable predictions testable via dual-EEG hyperscanning methodology. The MLMCT does not dissolve the hard problem of consciousness but reframes it: rather than asking how neural processes give rise to private experience, it asks how biological evolution produced a mechanism that makes subjective experiences approximately shareable, temporally coherent, and predictively efficient across individuals and environments. The framework is explicitly presented as a theoretical scaffold inviting empirical refinement, not as established fact.