The CQI Technical Specification provides the engineering-level implementation detail for the Coherence Quantification Index introduced in MS-04. Where the CQI paper establishes the theoretical framework and mathematical formalization, this specification establishes the practical measurement protocols, hardware requirements, threshold standards, and validation architecture required to deploy the CQI in clinical, research, and industrial settings.
The specification covers five primary measurement domains: cardiovascular coherence (HRV analysis), neurological coherence (EEG phase relationships), bioelectric coherence (bioimpedance and biophoton spectroscopy), acoustic coherence (Solfeggio frequency response profiling), and electromagnetic coherence (SQUID magnetometry and field mapping). For each domain, the specification defines the measurement hardware, signal processing requirements, sampling protocols, normalization procedures, and integration weights in the composite CQI score.
Threshold standards are formally defined for clinical application: coherence values below 0.5 are associated with disease predisposition and active pathological states; values between 0.5 and 0.75 represent functional but suboptimal coherence; values between 0.75 and 0.9 represent healthy coherence; and values above 0.9 represent high-performance coherence associated with peak biological function, accelerated regeneration, and optimal cognitive performance.
The validation architecture specifies the inter-rater reliability standards, test-retest reliability requirements, and convergent validity criteria that must be met before CQI measurements can be used in clinical decision-making. A complete quality assurance protocol is defined for both initial device certification and ongoing measurement verification.