Latent Sleep Architecture Types (LSAT): Phase-Regime Organization of the Human Bioprocessor and a Universal Catastrophic Transition Threshold

We introduce the concept of Latent Sleep Architecture Types (LSAT) as intrinsic phase-regime organizations of the human bioprocessor, derived exclusively from sleep dynamics. Using whole-night polysomnography and a state-transition formalism, we identify a universal Catastrophic Transition Threshold (CTT) governing the probability of abrupt collapses from structured to disorganized sleep states. We show that individuals are not characterized by different thresholds but by different dynamical regimes relative to this boundary. Two stable regimes emerge: a low-gain, high-stability regime (“Fortress”) and a high-gain, high-sensitivity regime (“Antenna”). These regimes differ in attractor depth, modal energy, and coupling gain, rather than in noise level. We propose that these regimes reflect early developmental calibration of the brain’s modal landscape and represent fundamental architectural types of the human bioprocessor.