The Sensation Modulating Network: Haltability as the architectural ground for object-directed phenomenology

Cognitive science remains split between cognitivism — which accounts for recursion and language but cannot ground formal symbols in meaning — and 4E approaches — which ground cognition in the body but rarely specify the body’s architecture in enough detail to support generativity. We argue the impasse stems from an incomplete account of the embodied agent’s architecture, and propose one: the Sensation Modulating Network (SMN), the cognitive agent conceived as the whole body, organized at every anatomical scale by opponent dynamics, built from Sensa- tion Modulators that sense and act through one substrate, paired into Coordinated Action Zones routed by a body-wide broadcast network. Three architectural commitments give the SMN its purchase. Haltability — the active recruitment of antagonistic affordance into co-activated equi- librium — provides the architectural locus that object-directed phenomenology, in Husserl’s sense, requires: opponency makes co-activation available, co-activation makes halt possible, halt makes attention possible, attention makes intentional directedness possible, with no module added on top. The dual-signal property of self-modulatable action patterns (SMAPs) renders the self/world distinction a structural feature of the wiring rather than a category the agent applies. And the four-level action-pattern hierarchy — Basal, Haltable, Negotiable, Transactional — gives a sin- gle architectural trajectory from autonomic regularity to public conventionalization, with the conditions for grammar-grounded generativity locatable as architectural transitions. The SMN’s position on the cognitivism–4E debate is reconciliatory: recursion lives in the modifiable mod- ular dynamics of Negotiable Action Patterns; embodiment lives in the opponent substrate that supports them. The architecture is presented in descriptive form across the body of the paper. Its formal counter- part — component definitions, single-zone dynamics, the multi-zone network, and eight predicted registers (seven testable, one explicitly hypothetical: inter-body shared intentionality) together with reference simulations realizing each register — is stated in an appendix. The registers are concrete discriminators that controller–plant decompositions, hierarchical generative models, and unstructured-substrate accounts cannot reproduce without further commitments; each is also a fingerprint of a dispositional state of the agent, providing a read of the architecture as a substrate for phenomenology rather than only for behavior.