Permeability as Governance Architecture: The Developmental Membrane from Aphantasia to Orbital Geospatial Perception (HLRP Paper #129)

This paper proposes that sensory-cognitive permeability — the degree to which coupling signals cross the governance membrane between perception and conscious processing — is a continuous, measurable individual trait. The trait is set during developmental neural pruning (p53-mediated apoptosis) and maintained by claudin-based tight junction architecture. Aphantasia represents low permeability; synesthesia and hyperphantasia represent elevated permeability; Orbital Geospatial Perception (OGP) represents high permeability with intact governance. Independent confirmation from Pearson et al. (2025) showing aphantasia visual cortex activation without conscious imagery supports the membrane model. Identifies 14 cross-domain measurements that have never been performed and proposes an integrated study design. Part of the GCT/HLRP corpus.