Definitionv1DF-149

Stress-induced perceptual narrowing

the neurobiological phenomenon where emotional arousal physically contracts the perceptual field by reducing prefrontal cortex engagement and increasing amygdala dominance, resulting in measurable loss of contextual information processing and cognitive flexibility under stress

Why This Is a Definition

This definition precisely captures the core phenomenon described in the lesson, establishing the genus (neurobiological phenomenon) and differentia (physical contraction of perceptual field through prefrontal cortex reduction and amygdala increase) that distinguishes it from other cognitive effects. It references the specific mechanisms (Easterbrook's cue-utilization hypothesis, Yerkes-Dodson law, amygdala hijack) and includes measurable outcomes (loss of contextual information processing).

Source Lessons

Stress narrows perception

Under stress your perceptual field contracts — you see less, process less, and mistake the narrow slice you do perceive for the whole picture. Recognizing this contraction is the first step to correcting it.

Connections

Defines (3)

AxiomSubcortical Fast-Pathway Threat Processing AxiomSystematic Overconfidence Taxonomy AxiomCognition Operates Through Dual Processing Systems

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