Theory 07
What it means physiologically when 'the body changes state': allostasis as predictive regulation, allostatic load as its cumulative cost, stress recovery and perseverative cognition, with the evidence, the critiques and the limits for catharsis.
Methods
How one could reason about recording a catharsis-like change of state: signals, features, inference and context, baselines, self-report, error costs and ethics, and why every step stays uncertain. Nothing on this site measures anyone.
Question 11
Instruments record faces, heart rhythms and skin conductance. Emotions are inferred from those recordings, and the syntheses show the inference is weak: no gold standard, no autonomic fingerprint, modest coherence.