Neurobiological Cognitive Integration (NCI)

The human nervous system receives roughly one billion bits of sensory information per second; conscious awareness registers about ten. The remainder is processed below awareness, where it regulates the body and directs behavior. What reaches awareness is a compressed summary — the autonomic brief — carrying no record of what was left out, or why. Selection occurs before awareness, governed by stable settings established early in development.

This monograph develops Neurobiological Cognitive Integration (NCI), named in earlier work, into a measurable account of that selection, assembling evidence from eight research fields that rarely cite one another, from sensory neuroscience to neuroimmunology. NCI proposes two parameters. Position is the stable filter setting that corresponds to temperament; it is built from two cortical networks (inward- versus outward-oriented processing) and three admission tags (novelty, threat, and interpersonal resonance), whose combinations are proposed to settle into five recurring profiles — the same five the earlier account identified from behavior. Range is the energy left to run the setting once the brain’s fixed metabolic costs are paid, and it fluctuates with sleep, stress, and inflammation.

Four consequences follow: every positional strength entails a matching blind spot; the filtered brief is experienced as unmediated reality; falling Range is predicted to cost flexibility first and the filtering itself last; and self-report instruments capture descriptions of the brief rather than the setting beneath it.

Position is tuned through childhood and adolescence and is largely settled by the mid-twenties, after which it has been assumed, but not shown, to be fixed. The monograph’s most consequential proposal concerns that assumption: animal studies show that inflammation can dissolve the physical brakes that close developmental plasticity, and we propose that while those brakes are off the setting can drift toward its extremes and is then held there once they re-form — a change in weighting, not learning.

The account is offered as explicit, falsifiable hypotheses, marked as such throughout and kept separate from the findings they build on; no new empirical data are reported. Ten predictions are set out, together with the requirements a valid measurement instrument would have to meet; none yet exists. NCI is not a diagnostic system. If supported, it reframes individual differences in character and vulnerability as products of filter setting and energetic state rather than of volition or pathology alone.