Building on the spectroscopic hysteresis model developed for post-N₁₂ nitrogen (Paper 3, Zenodo 18923207), we propose that the CL5D Hybrid Model may serve as a computational diagnostic framework for physiological dissolved nitrogen states. Using published values of dissolved nitrogen partial pressure (PN₂) across clinically established conditions — from sea-level normobaric breathing through hyperbaric oxygen therapy (HBOT) to decompression sickness (DCS) risk zones — we apply the CL5D convergence score Cn(PN₂) and the Unified Toughness Factor as proposed physiological indicators. The framework maps clinical risk zones onto distinct Cn bands, with a notable correspondence at the nitrogen narcosis onset pressure (PN₂ ≈ 3.16 atm, Cn = 0.080). The hysteresis coefficient η = 8.28×10⁻⁶ is proposed as a molecular invariant of nitrogen, potentially rooted in the nuclear spin state of ¹⁴N (I=1). All results are simulation-based; experimental and clinical validation is the critical next step.
Mrinmoy Chakraborty (Wed,) studied this question.